List of Teen Wolf characters

Tyler Posey

Scott McCall is the main protagonist of Teen Wolf, the True Alpha werewolf, with his Pack. In the pilot, "Wolf Moon", Scott is Bitten by Peter Hale, which transforms Scott into a werewolf. He begins a relationship with Allison Argent, a new student whom he later discovers to be part of a werewolf-hunter family. Scott lives with his mother, Melissa and has a part-time job at Beacon Hills Animal Clinic as an assistant to the veterinarian Alan Deaton, whom is like a father to Scott. In Season 1, with the help of his best friend, Stiles Stilinski, and mysterious werewolf, Derek Hale, Scott struggles to control his transformations, balance his high school life with being a new werewolf and keep his loved ones safe from the dangers his new life presents. He gains success controlling his transformation using thoughts of Allison, realizing he is in love with her.

Scott is extremely protective and caring of those he loves. He is good natured, determined, has a sharp wit and a very clear sense of right and wrong, but he can let his emotions get the best of him. In the Season 1 finale, Scott and Allison solidify their relationship after she finds out he is a werewolf, and realizes all his lies were to protect her. In Season 2, Scott and Allison are very much in love, but their relationship is strained by Allison's parents forbidding them to be together and later by Allison's immoral behaviour because of Gerard's manipulation over her mother's death. Originally, Scott saw his new werewolf status as a curse and wished to find a cure, but by the end of Season 2, after Allison and Melissa accept his new life, he now sees his werewolf powers as a gift to save and help people and doesn't believe in outright killing his opponents. After Allison apologizes for her amoral actions, they break up because Allison needs space, but they still care for each other afterwards. Scott also becomes close friends with fellow werewolf Isaac Lahey upon learning Isaac doesn't have anyone there for him and helps Scott defeat Gerard and save Jackson in the Season 2 finale.

In the Season 3 premiere, Scott gets a tattoo of two bands around his left upper arm with Derek's help. He sees the mark as a reward for having let Allison go. In the episode "Currents", Deaton confirms that Scott has the potential to be a True Alpha, a rare werewolf that can rise to Alpha status purely by sheer strength of character and willpower rather than by dominance, conquest or killing. Such an Alpha is the rarest and greatest of all werewolves. In the episode "Alpha Pact", Scott temporarily sacrifices himself with Stiles and Allison in a Druid ritual to save their parents from being sacrificed for the Darach, Jennifer Blake. In the mid-Season 3 finale "Lunar Ellipse", Scott and Derek defeat the Darach, and Scott fully awakens his True Alpha status. Scott also begins to refer and consider his close friends as his Pack. Scott later learns his biological father, Rafael is back in town, to his and Melissa's anger, as he'd left the family when Scott was only a toddler. As a result of his Druid sacrifice, Scott now carries the burden of having a darkness around his heart like a scar. Scott is hurt when Allison and Isaac develop a romantic relationship but eventually comes to terms with it. Scott starts a new romance with Kira Yukimura after learning she likes him and she is also supernatural, a Kitsune. When it's realized Stiles is possessed by the Nogitsune, Scott is determined to separate the Dark Kitsune from Stiles without his best friend dying. In "De-Void", Scott and Kira share a kiss after she promises him they'll save Stiles. Scott uses an Alpha's power to meld minds so to enters Stiles' mind with Lydia. Because Stiles is in his Pack, Scott uses an Alpha's roar, allowing Stiles to break free of the Nogitsune. In "Insatiable", Scott and Stiles manage to find and rescue Lydia, but Allison has been fatally stabbed by the Oni. He tries to save her life by taking her pain, but can't. Allison comforts him saying she is in his arms, it's perfect, that she loves him and dies. Devastated, Scott tearfully kisses her forehead. In the Season 3B finale, "The Divine Move", Scott defeats the Nogitsune with an Alpha's Bite, as the Dark Kitsune can't be both a Fox and a Wolf. At Season 3's end, Scott moves on with his life mourning Allison.

In Season 4, Scott is trying to come to terms with Allison's death. He initially has his relationship with Kira on hold, but eventually Scott decides to give in to his feelings for her, to her joy. In "Muted", Scott is forced to Bite Liam Dunbar, gripping him with his fangs to save Liam from falling to his death. Initially feeling guilty, Scott takes Liam under his wing, helping him adjust to being a werewolf and protecting him. Scott vows to stop the assassinations on the Dead Pool. However, upon learning Rafael killed an assassin to save Stiles' life, Scott contemplates should he resort to killing his opponents. In "Monstrous", Scott saves young Lori Rohr from death, but attempts to kill the assassin. This action triggers a transformation into a new monstrous form, but when the assassin surrenders, Scott stops at the last minute, sparing the man's life. In "A Promise to the Dead", Scott and Kira go on their first date, Kate Argent and her Berserker attack them, they are both taken to La Iglesia, where Kate briefly transforms Scott into a Berserker. In the Season 4 finale, "Smoke & Mirrors" Scott as a Berserker, under Kate's control, attacks his friends. Liam reaches Scott, and Scott breaks free of the Berserker form. Scott then faces Peter, having figured out his plan to conspire with Kate to have Scott killed. He clashes with his werewolf sire fiercely. Peter goads Scott he'll have to kill him if he wants to beat him. When Peter threatens Liam, Scott triggers new super strength and effortlessly defeats Peter while also sparing him.

"Teen Wolf: The Hunt", a Teen Wolf inspired social network game for Facebook, states that Scott was born on October 6. He likes guitars, horror films, and skateboarding, and is a fan of The Black Lips, Kids of 88, Blink-182, and Lost in Kostko (Tyler Posey's band in real life, in which he plays guitar and sings lead vocals).

Dylan O'Brien

Stiles Stilinski is Scott's best friend, he and Scott consider each other brothers, as well as a member of his Pack. "Stiles" is not his first name; only creator Jeff Davis knows his real name and that it was his maternal grandfather's name. Stiles is very sarcastic, but has a very quick mind, being intelligent and clever if somewhat impractical. His intelligence is shown very early on when he figures out that Scott is becoming a werewolf and helps him adapt to his new life. Stiles is Scott's sidekick and confidant, helping the young werewolf deal with the supernatural events that plague the town. The show alludes to him having attention deficit hyperactivity disorder through references to his Adderall use, which lends to his fidgeting gestures and frequent flailing.^[3] Stiles often provides comic relief to the otherwise dramatic events surrounding him and Scott. Stiles' eagerness and caring nature have constantly put him in danger, nevertheless he continues to help, support and protect his supernatural friends.

Stiles shares a close and affectionate relationship with his father, Sheriff Stilinski, partially due to the death of his mother, Claudia. Stiles is shown to be very emotional and insecure over his mother's death; he was with her when she died. Stiles was 8 years old at the time, and suffered panic attacks afterward. He blamed himself for her death and fears that his father blames him. Stiles, throughout Seasons 1 and 2, has an intense, unrequited love for Lydia Martin, having harbored a crush on her since the 3rd grade. He has a simultaneously adversarial and allied relationship with Derek Hale. Stiles attempts to stand up to Derek, but the werewolf tends to scares him into submission. They help each other out and save each other's lives multiple times, and by Season 3, they are reluctant allies. In Season 3, Stiles is shown to be working alongside Lydia to figure out who is the culprit behind the Human Sacrifices in Beacon Hills and they have a closer, but more equal, platonic dynamic that suggests Stiles' love for her has become less intense. He also wishes to keep his father out of the supernatural world out of fear he could get him killed, not wanting to lose both his parents. When the Darach kidnaps his father for the Guardian sacrifice, Stiles eventually sacrifices himself temporarily along with Scott and Allison to save their parents with Lydia as his Tether to take his father's place as a Guardian. He is finally reunited with his father at the end of the mid-season finale "Lunar Ellipse", with the new burden of having a "darkness" forever shrouding his heart. With his father finally brought into the supernatural business, the two are now closer.

As a result of the Druid sacrifice, in "Anchors", Stiles suffers from hallucinations, sleep paralysis and partial dyslexia, as well as the fact the sacrifice left a door to his mind open. Later, after using his natural intelligence to rescue Lydia from a steel jaw trap and helping to reunite the werecoyote Malia Tate with her father, Stiles' symptoms are cured. However, Stiles is later revealed to be possessed by the Nogitsune. In "Riddled", Stiles comes face to face with the Dark Kitsune in his visions asking the riddle, "Everyone has it, but no one can lose it", which Stiles, terrified, eventually solves as a "shadow". Stiles comes to the realization he's possessed when the Void Kitsune assumes his very face. Possessing Stiles, the Nogitsune causes a slew of attacks that leave innocents injured and dead. The Nogitsune's hold over Stiles is temporarily broken when Deaton poisons Stiles with letharia vulpina. In "Echo House", Stiles, to prevent the Nogitsune from harming anyone else, has himself institutionalized at Eichen House. He's shown around by his roommate Oliver. He sees that Malia is also interned there. With her help, Stiles searches for the connection between the Nogitsune and Eichen House. Stiles explains his situation to Malia where they bond over their horrific dilemmas and come to care for each other. Eventually they kiss and sleep together. Oliver who is being controlled by the Nogitsune, attacks them both. Stiles gives up his fight with the Nogitsune, letting him back in so that he will spare Malia's life. In "De-Void", Scott enters Stiles's mind and using an Alpha's roar, Stiles is finally separated from the Nogitsune, but the Void kitsune has taken on his shape. Stiles is shown to be in constant internal pain and freezing, while the Nogitsune grows stronger. After Allison's death, Stiles, while growing consistently weaker in "The Divine Move", he goes along with Scott, Lydia and Kira to the school to make a final stand against the Nogitsune. The Kitsune traps them in an alternate dimension at the school and are surrounded by the Oni. Stiles realizes that the winter reality is only an illusion. He has the foursome endure the Oni's attacks until they escape the illusion the Nogitsune has trapped them in, pulling off a divine move that turns 'the game' around. Scott then Bites the Nogitsune, defeating the Dark Kitsune, winning the game, allowing Stiles to become whole, fully recovering.

In Season 4, Stiles is shown to hold himself in deep horror over the Nogitsune's possession of him, remembering everything he did while "feeling powerful". He is in a romantic relationship with Malia, with he helping her adjust to a regular human life. He relates his horrors to her during one of her full moon episodes where he says he knows what it's like to have hurt your loved ones and this helps Malia perfect control. Upon learning of the Dead Pool, Stiles sets up a murder board in his room to learn who's behind the money. Stiles is reluctant to tell Malia about her true parentage to Peter because of the sociopathic werewolf's past actions, however she soon discovers the truth herself, straining their relationship. In 'Perishable', Stiles and Lydia following clues leading to Eichen House, are almost murdered by Brunski and discover Meredith has been 'the Benefactor' all along. In 'Monstrous', Stiles and Malia make up and together, they locate and shut down the computer servers that house the Dead Pool, terminating all the Benefactor's contracts. At the end of Season 4, Stiles helps Liam perfect control on a full moon, and starts a new investigation to find Malia's biological mother.

"Teen Wolf: The Hunt", a Teen Wolf inspired social network game, states that Stiles was born on April 8.^[4] He likes drumming, snowboarding, and the New York Mets. He is a fan of the bands The Ramones, The Offspring, Mumford and Sons, All Time Low and Slow Kids At Play (Dylan O'Brien's band in real life, in which he plays drums).

Holland Roden

Lydia Martin is Beacon Hills High's most popular female student, a member of Scott's Pack, the former love interest of both Jackson Whittemore and Aiden, she was Allison Argent's best friend, and (revealed in Season 3 episode "The Girl Who Knew Too Much") is a banshee. In Season 1, Lydia at first appears to be the archetypal spoiled high school queen bee. In reality she is surprisingly caring to her friends, befriending Allison on her first day at school. Lydia is also extremely intelligent, having a GPA exceeding 5.0. Her love interest is Jackson Whittemore, although she initially makes it apparent she is merely dating him due to his status as the school's lacrosse team captain, she is actually in love with him. At the start of the series, Lydia gives the impression of barely knowing who Scott and Stiles are, only expressing interest in Scott after he is Bitten and shows skill at lacrosse. Stiles, throughout Seasons 1 and 2, has an intense, sweet crush on Lydia, but she does not reciprocate. In the Season 1 penultimate episode "Formality", Lydia is Bitten by the Alpha Peter Hale but she neither dies nor turns.

In the beginning of Season 2, Lydia recovers, but suffers from a hallucination while in the shower and goes into a fugue state running around in the woods naked for two days. Later she doesn't remember the entire experience at all. Lydia is determined to be immune to the Kanima's venom, and thus Derek assumes she's the Kanima, although it is later revealed to be Jackson. Lydia suffers further fugue episodes and hallucinations which, along with Jackson's rejection, causes her to have emotional breakdowns. The hallucinations are caused by Peter, who planted an imprint of himself in Lydia's mind when he Bit her, possessing her to use her to return to life. As a result, she learns pieces of the supernatural events. In the Season 2 finale, Lydia selflessly faces the Kanima and successfully coaxes it to transform back into Jackson, by holding up the house key Jackson had given her when they were together. When Jackson asks if she still loves him while he's dying, she responds that she does and embraces him when he is cured of being a Kanima and resurrected as a werewolf.

By Season 3, Lydia has been brought up to speed on the supernatural, has greatly matured and has come to care deeply for Scott and Stiles. She and Jackson have parted since he moved to London and she is attempting to get over it. Lydia enters into a purely physical relationship with Aidan, initially to distract herself from Jackson, unaware he was assigned to get close to her to get leverage on Scott. Lydia displays a strange connection to the events occurring in Beacon Hills being mysteriously drawn to the locations of several of the sacrifices and occupying her time with drawing the same tree over and over again. Lydia joins forces with Stiles to figure out who is really behind the sacrifices. In "The Girl Who Knew Too Much", when Cora Hale tells her, Scott and Stiles all they do is find bodies, not saving anyone, Lydia later appears at the memorial recital deciding to stop fighting her connections to the murder scenes if it could help save someone with Scott offering his support. Later she is held captive by Jennifer Blake, the Darach, who attempts to kill her and Lydia lets out a high pitched Scream. Jennifer then reveals to Lydia that she is actually a banshee. Lydia and Stiles find out the tree she's been consistently drawing is an inversion of the Nemeton's root system, which allows them to realize it's where the kidnapped parents are being held. During Season 3B, though Lydia continues her liaison with Aiden, she eventually tells the werewolf that he is only a 'bad guy' because he helped to kill Boyd, while she uses her abilities to help save lives. Lydia's talents allow for her to communicate on a network that predicts death: Jeff Davis has revealed this network is the whispers of other banshees. The Nogitsune kidnaps Lydia in "Insatiable" and takes her to Oak Creek. She senses the pending death of the Nogitsune - only this was the reason the he took her, to know in advance when the Oni would appear to kill him, so he would be able to take control of the demons. Lydia had warned the others through a message relayed by fellow banshee Meredith Walker not to come for her, because she had sensed an impending death - Allison's. Lydia Screams for Allison when she's impaled by an Oni and is overcome with grief as she "feels" her best friend's death. In the Season 3 finale, Lydia meets Deaton with Scott, and comes up with the idea to use the Hales' triskele urn to trap the Void kitsune. Shortly after the Nogitsune's defeat, she "feels" another death - this time it is Aiden. Despite her previous opinion of her lover being a "bad guy", she grieves his death from fighting the Oni as a "good guy".

In Season 4, Lydia has started over with close friends in Kira and Malia. Lydia helps Malia in her schoolwork by lending her notes. She learns some notes she's lent are actually computer code she doesn't remember transcribing. She hears "the whispers", learning the computer code comprises the Dead Pool, the hit list of supernaturals in Beacon Hills as well as the first cipher key to decode the list: ALLISON. Lydia immediately works on getting the other two cypher keys, later learning from Meredith the second is AIDEN. Lydia cracks the final third of the Dead Pool but sees that Meredith is on the list. She is saddened that Meredith, "the only other banshee (she)'s ever known," has supposedly committed suicide out of fear. Lydia later learns her paternal grandmother Lorraine was also a banshee; she'd written a list of names, part of the Dead Pool code which lead her and Stiles to Eichen House. Lydia learns Lorraine was actually murdered by Brunski, and that Meredith is alive and has been 'the Benefactor' all along. At the sheriff's station, Lydia learns of Meredith's history with Peter and Meredith reveals to Lydia she'd enacted the Dead Pool after 'hearing' Lydia's Scream when she felt Allison's death, because of how many people have died because of the supernatural. Lydia tells Meredith "Not all monsters do monstrous things", the two banshees coming to an understanding. At the end of Season 4, Lydia gives Parrish a hard copy of the bestiary and offers to help him identify what supernatural species he is.

Teen Wolf: The Hunt, a Teen Wolf–inspired social network game, states that Lydia was born on March 23. She likes Mu Alpha Theta, figure skating, yoga, and astrophysics, and is a fan of Madonna, Calvin Harris, Kids of 88, Muse, and Kat Graham.

Shelley Hennig

Malia Tate is a werecoyote, a member of Scott's Pack, the legal daughter of Henry Tate and his late wife Evelyn, and the love interest of Stiles starting in Season 3B. She also has an unnamed deceased younger adoptive sister. In "Letharia Vulpina", it's revealed Peter is Malia's biological father, but Talia had wiped his mind of the memory of his child. Malia's biological mother is only known so far as the Desert Wolf.

At age 9, Malia was presumed dead for eight years from a car accident that claimed the lives of her mother and her younger sister. She was actually alive fully transformed as a coyote. On the night of the car crash Malia had shapeshifted on a full moon. Her transformation had caused the car accident, and killed her mom and sister in the process earning her blue eyes by taking innocent lives. In the Season 3B premiere "Anchors", Sheriff Stilinski reopens the case under a suspicion a supernatural may have been involved, and Scott and Stiles discover Malia in the woods. In the episode "More Bad Than Good", Scott uses his Alpha roar to have Malia return to human form. Sheriff Stilinski and Stiles bring her home and she is reunited with her father. After eight years as a coyote in the wild, Malia is very in touch with her animal side, is rather brash, and tends to speak her mind. She initially struggles academically and shows little regard for social etiquette.

In "Echo House", Malia is interned at Eichen House sanatorium. There, she sees Stiles who has voluntarily committed himself. When he walks up to Malia, she punches him. Malia tells Stiles she is unhappy being human, because she now lives back with her father and can't tell him that she killed her mom and sister, and Scott's Alpha roar has caused her to remain human. Stiles, who needs access to the basement for information regarding the Nogitsune's connection to Eichen House, specifically the kanji "self" on the wall, makes a deal with her: she helps him get into the basement, then Scott will teach her how to change back. Stiles lets her in on his situation and they eventually bond over their shared horrors, Stiles coming to care for Malia. Eventually Malia kisses Stiles, to his consent and they wind up sleeping together. Behind the wall, they find the Nogitsune's original host's body, a sheathed katana, and a photo. Afterwards, they are attacked by Oliver, Stiles' roommate, who is being controlled by the Nogitsune. Stiles lets the Nogitsune back in, in exchange for the Kitsune sparing Malia. Malia later prepares to leave Eichen House, intending to rescue Stiles. She eventually brings the sheathed sword and the photo to Scott. At the end of Season 3, Malia has started to learn to live as a human, enrolling at Beacon Hills High School and joining Scott's Pack.

In Season 4, Malia is continuing her romance with Stiles, with the Pack attempting to help her reintegrate back into society. Malia has a survival-of-the-fittest mentality, as shown when she was willing to leave Lydia behind when the group was held captive by the Calaveras. Nevertheless Malia proves to be loyal to her core and rather attached to Stiles stating she'd never leave him, and regularly sneaks into his house at night. Malia is struggling in learning control during the full moon. In "The Benefactor", Stiles stays with her on the full moon; he surmises she lacks control because of her guilt in what she did to her mother and sister. He relates to her because of the Nogitsune's possession of him. Malia masters control at this. The Pack keeps Malia in the dark that Peter Hale is her biological father, to protect her from the sociopathic werewolf. But in "Weaponized" Malia discovers the truth when she sees she is listed on the Dead Pool as "Malia Hale". Malia is severely hurt and feels betrayed by Stiles keeping the information from her, straining her relationship with him. Malia meets with Peter, learning from him her real mother is known as 'the Desert Wolf'. Malia doesn't see herself different from Peter, he being a killer while she killed her adoptive mother and sister. In "Monstrous" after being almost killed and learning of Stiles' own near-death experience, Malia, with a push from Melissa, ultimately makes up with him, and at the Martin lakehouse they locate the computer servers that house the Dead Pool, and shut them down. On the mission to rescue Scott and Kira, Peter tries to coax Malia into unleashing her animal side in the fight against Kate and the Berserkers, but Malia sees Peter for what he truly is upon learning he was intending to kill Scott. Malia is happy to learn Stiles is looking into her biological mother.

Kira Yukimura is a kitsune, the daughter of kitsune Noshiko Yukimura and Ken Yukimura, and Scott's second girlfriend. In Season 3B, Kira is the new girl at school, having moved to Beacon Hills from New York. Kira is initially portrayed as intellectual, quirky, sweet and looks to make friends in school, but has trouble fitting in because of her dad being the new history teacher who's prone to unintentionally embarrassing her. She is now a member of Scott's Pack. As a Kitsune, Kira is of the type Thunder, which gives her influence over electricity and her eyes glow a flaming orange.

At Season 3B's start, Kira displays a crush on Scott, which he reciprocates. In "Galvanize", Kira is revealed to be supernatural after mass murderer William Barrow kidnaps her and manifests an ability to absorb electricity after he attempts to kill her by electrocution. Scott witnesses this display and Kira is intrigued that Scott doesn't "run the other way" from her peculiar circumstances. In "Illuminated", it is shown that Kira gives off an aura that is shaped around her like a flaring armor in the shape of an anthropomorphic fox that's visible to a werewolf's vision. Scott invites her to Danny's black light party and their interest in each other strengthens and later, she witnesses Scott and Derek fight the Oni in their werewolf forms. Consequently, Scott reveals the supernatural status of he, his Pack, everything to her. Kira eventually does research and theorizes she is a Kitsune, the trickster Fox, which is later confirmed by Derek. Kira later discovers further abilities; supernatural speed and agility, as well as a natural talent for swordplay. When her mother Noshiko displays similar talents, she discovers Noshiko is also a Kitsune and had summoned the Oni to Beacon Hills. In "The Fox and the Wolf", Kira confronts her parents, along with Scott. Kira is distrustful of her mom and is further baffled when Noshiko reveals she is actually 900 years old. Noshiko tells Kira her story of her time as an intern at Camp Oak Creek and her role in unleashing the Nogitsune. Noshiko asks Kira to trust her this once, telling her she is a Thunder kitsune and shows her how to use her talents to repair her shattered katana. Kira is told Noshiko's legacy is now hers when she passes her the sword. Kira comes to grips with her Kitsune nature, her capacity to fight and becomes part of Scott's Pack, wanting to help save Stiles and cure him. In "De-Void", still unable to face her parents after everything they've kept from her, Kira spends the night with Scott. They kiss. In "Insatiable", Kira along with Isaac and Allison go up against Noshiko and the Oni trying to dissuade her mother from outright killing the Nogitsune as the process could probably kill Stiles. Unfortunately, the Nogitsune takes control of the Oni and turns the demons against them and Allison is killed. In the Season 3 finale, Kira is told by her parents their move at this point has to be a divine move in order to stop the Nogitsune. Kira goes along with Scott, Stiles and Lydia to stop the Nogitsune at the school. She battles the Oni and then fatally stabs the Nogitsune running the demon's corporeal form through with the katana after Scott Bites him.

At the start of Season 4, Kira has her romance with Scott on hold because she wants to give Scott the time he needs to grieve for Allison. In "Muted", Kira shows an aptitude for lacrosse, joining the lacrosse team, and Scott decides to give in to his feelings for Kira, saying he's "not sorry", to her joy, sharing a deep kiss with her. When the Dead Pool goes out, assassins coming into town, Kira takes actions to protect herself and Noshiko as she and her mother are both on the hit list and Noshiko no longer possesses the power she had previously. In "Monstrous", Kira saves Brett Talbot and Lorilee Rohr of Satomi's Pack from a team of hunters-turned-assassins and fights to protect Satomi's Pack until the Dead Pool is shut down and the contracts are terminated. Scott and Kira finally go on their first date. They are attacked by Kate and her Berserker and are taken to La Iglesia. Kate has Scott converted into a new Berserker, and under the malevolent werejaguar's control, Kira is attacked by Scott. Hallucinating her mother and determined to save Scott, Kira breaks off a piece of obsidian in the temple and uses it to trigger her kitsune healing. She and Stiles save Scott when he's almost destroyed as a Berserker, as per Peter's plan. Kira keeps the obsidian shard when returning to Beacon Hills. Afterward, her father Ken has the shard reshaped into a shuriken and Noshiko presents her with the star, and Kira realizes the shuriken represents her first Kitsune Tail.

Dylan Sprayberry

Liam Dunbar is a new freshman at Beacon Hills High School, Mason's best friend and a Beta werewolf in Scott's Pack. Liam is loyal, extroverted, sometimes cocky, but has severe anger issues. Liam's step-father, Geyer, is an administrator at Beacon Memorial hospital. Liam transferred to Beacon Hills High after being kicked out of Devonford Prep. He violently damaged his lacrosse coach's car with a crowbar. Liam was diagnosed with I.E.D., after being sent to a psychologist for an evaluation. Liam is Scott's first Bitten Beta werewolf.

Liam first appears in "Muted", excelling at lacrosse practice, but is accidentally injured by Scott, breaking his leg, and Scott immediately helps bring Liam to the hospital. Liam comes into the supernatural world when he's held hostage by Sean Walcott, a wendigo. Scott attempts to rescue him, but Liam is thrown over the hospital roof. Sean has Scott's arms pinned during the fight, so to save Liam from falling to his death, Scott catches Liam with his fangs, Biting him, transforming Liam into his first Beta. In the next episode "The Benefactor", Liam's werewolf abilities begin to manifest. At Lydia's lake house, Scott's Pack meets with Liam, they attempt to gain his trust and debrief him of their supernatural status. Liam angrily snaps at their behavior, losing control of his animal side, running out into the Preserve, but Scott and Chris Argent effectively subdue him. Terror-stricken at what's happened to him, Liam tearfully admits he deserved getting kicked out of his old school. He fears his parents seeing him as a monster. Scott tells Liam that "(he)'s not a monster, (he)'s a werewolf like (him)". Afterwards, Liam is inducted into the Pack, being taught everything supernatural and developing a big brother-little brother rapport with Scott.

In "I.E.D.", Liam faces off against his old school rival Brett Talbot during the lacrosse season's pre-season scrimmage. Scott and Stiles keep Liam under control during the game, but they learn that their teammate Garrett is an assassin, and is targeting Brett who's also a werewolf of the Alpha Satomi's Pack. Liam is then kidnapped by Garrett, and dying of a wolfsbane laced wound. Liam remembers Scott's training on being a werewolf which gives him enough control over his werewolf side to let out a howl which allows Scott to find and rescue him. Liam eventually develops enough control outside of the full moon. In "Time of Death", Scott tells him he doesn't have to get involved in the plan of catching 'the Benefactor' if he doesn't want to. Liam decides he's not afraid and wants to help. Liam and Kira face off against Kate's Berserker, but they're overpowered and Liam develops PTSD afterward, having hallucinations of the Berserkers. Later on with his price on the Dead Pool being moved up to $18 million because of Derek's removal and the attempted assassination at the bonfire, the stress starts to get to him. Liam admits his fears to Scott, saying he's not like his Alpha, how he and the others put their lives on the line, trying to save people. In "A Promise of the Dead", Liam struggles, but he is helped by Brett, with his former rival snapping him out of his phobia, telling him he is alive, and that he's lucky to have Scott as his Alpha. In "Smoke & Mirrors", the full moon is approaching, but Liam insists on coming to save Scott. Liam perfects control when Stiles has him recite Satomi's mantra. When Scott is under Kate's control as a Berserker, Liam gets through to Scott, using the same words Scott said to him; "you are not a monster, you are a werewolf, like me", which breaks the Berserker transformation, saving his Alpha's life.

Tyler Hoechlin

Derek Hale is a werewolf by birth and a member of Scott's Pack. Derek lived in Beacon Hills with his family, a Pack of both werewolves and humans. At age 15, Derek fell in love with a girl named Paige. Wanting to be with her forever, Derek, with some manipulative persuasion from his uncle Peter, came up with the idea of turning her into a werewolf. Peter asked Ennis, an Alpha werewolf, to give her the Bite. However, Derek, hearing Paige's screams, changed his mind but realizes he is too late to save her and that Paige was actually rejecting the Bite. Knowing that Paige will die instead, Derek broke her spine to end her suffering. The killing of an innocent caused his werewolf eyes to change from yellow to blue, darkening his soul. Later on, Derek entered into a sexual relationship with Kate Argent, unaware she was a werewolf-hunter and was only using him to get information on the Hales. Kate burned the Hale House down, killing most of Derek's family and rendering Peter comatose. Derek and his older sister Laura left Beacon Hills for New York soon after. Due to his tragic experiences, Derek became angry, dark, cynical, defensive and mistrustful.

In Season 1, Derek returns to Beacon Hills six years after the fire to investigate a mysterious Alpha who had Bitten Scott McCall and killed Laura. He attempts to train Scott to help him control his new nature. He is antagonistic towards the Argents, especially Chris, and Kate, the murderer of his family, and immediately disapproves of Scott's relationship with Allison. He does not immediately get along with Stiles, and tends to bully him, as well as Scott, into participating in his plans. In "Wolf's Bane", Derek discovers the Alpha is his uncle Peter who had murdered Laura to rise to Alpha status. In the Season 1 finale, Derek becomes the new Alpha werewolf, killing Peter to avenge Laura's death. In Season 2, Derek exhibits pride and a hunger for power. He attempts to recruit Scott into his Pack, but Scott no longer trusts him. He goes on to Bite three students, Isaac, Erica and Boyd, all with dark backgrounds, easily recruiting them to his Pack in exchange for power and confidence. He is threatened by the Kanima and sets out to kill it. As the dangers escalate, Erica and Boyd leave, frightened of the Argents' werewolf genocide. Derek grows to respect Scott more over time, treating him as more of an equal, especially after Scott puts an end to Gerard's threat and after saving each other's lives multiple times, Derek somewhat humors Stiles and comes to trust his judgment. In the finale "Master Plan", it is revealed Derek was in a hurry to build his Pack and power because an Alpha pack would be on the prowl for a development such as his rising to Alpha status.

In Season 3, the Alpha Pack lead by Deucalion arrive in Beacon Hills ostensibly to recruit Derek, and are holding Boyd and Erica hostage. Derek is saddened when Erica is found dead, but is emotionally shaken when he discovers his younger sister Cora who had survived the fire is found also. When Boyd and Cora are feral under the full moon, Derek saves Jennifer Blake, the new English teacher, from them. Derek becomes attracted to Jennifer, starting a relationship with her. After discovering that Cora is alive, Derek displays a more caring, humane side of himself around her, is protective of her and actually cares about what she thinks of him. He is broken when the Alphas have him kill Boyd by accident, which also causes him to see Erica's death via the former's memories. Jennifer is later revealed to be the Darach who was making Human sacrifices across Beacon Hills, and had poisoned Cora with mistletoe for leverage against him to his anger. Not caring about power anymore, Derek gives up his Alpha status to save Cora from death, helps Scott put a stop to Jennifer saving the kidnapped parents, but they decide to spare Deucalion. Derek leaves town with Cora for South America. In Season 3B, Derek is on a mission with Peter in South America to retrieve his mother Talia's claws which are in the possession of the Calavera family. He and Cora have also separated, as he had her go into hiding. They retrieve the claws with the mercenary Braeden's help. After returning to Beacon Hills, Derek has Peter use a ritual to communicate with Talia's ghost. Derek meets with Scott, tells him Talia informed him the Hales didn't only live in Beacon Hills, they protected the town and it needs someone like Scott to continue protecting it. Derek also solves his differences with Chris after he saves Chris' life from a bomb set off by the Nogitsune, and Chris tells Derek they aren't enemies anymore right after the Nogitsune had possessed him to kill Chris. In the Season 3 finale, Derek and the twins face off against the Oni after bringing the triskele urn which held Talia's claws because it could be used to seal the Dark Kitsune away. Derek is last seen being cornered in his loft by the Calaveras. Suddenly the hunters are attacked, and Derek comes face to face with a revealed-to-be-alive Kate Argent.

In the Season 4 premiere, "The Dark Moon", Kate is holding Derek in Mexico, in an Aztec temple, La Iglesia. Scott's Pack and Braeden rescue him, but Kate, using the talents of Tezcatlipoca, had Derek regressed in age and memory to 15 or 16 years old, the time of his life when he was sleeping with Kate, when he trusted her. In the episode "117", Kate used him to have him reveal to her the location of the Hale vault so she could steal the Triskelion. Later on, Derek fights Kate's Berserkers, shifting to his werewolf form, and this causes him to return to his normal age, but his werewolf eye colour has returned to gold. He later realizes this means he's gradually losing his werewolf power. Derek hires Braeden to find Kate for him over her contract with the Calaveras. Braeden accepts, while simultaneously flirting with him. Derek later finds Braeden injured, taking her to the hospital. Derek and Braeden's interest in each other deepens and they start a relationship. Braeden gives Derek lessons on how to use firearms, as well as hand-to-hand combat necessary for a human against supernatural foes. He excels at her lessons, overpowering the assassins at the high school and learning how to use his new handgun while protecting Satomi's Pack. With Lydia arriving at his loft letting out a Banshee Scream, Derek contemplates the fact he may not come back alive on the mission to rescue Scott, sharing a kiss with Braeden. Derek is wounded by a Berserker and dies, but he later revives with all of his powers restored and at their peak, destroying the Berserker, as well as gaining the talent to fully shapeshift into a wolf, like his mother Talia and sister Laura before him. Derek learns he was actually Evolving all throughout Season 4.

Crystal Reed

Allison Argent was Scott McCall's first love, a member of the Argent family, a long line of werewolf hunters, and a member of Scott's Pack. Allison was best friends with Lydia, friends with Jackson Whittemore, Stiles Stilinski and Kira Yukimura, and the girlfriend of werewolf Isaac Lahey. Allison was killed in episode "Insatiable" of Season 3 by the Oni, controlled by the Nogitsune, while saving Lydia and Isaac's lives and died a hero in Scott's arms.

In the pilot, "Wolf Moon", Allison meets Scott McCall on her first day of school. There is instant chemistry between the two and they begin a romantic relationship. She is at first unaware of Scott and Derek's lives as werewolves, and her family's werewolf-hunter life. Her aunt Kate reveals the supernatural world to her in "Co-Captain" including her family's werewolf-hunter life by showing her a captured Derek. In the Season 1 episode "Formality", she is shaken up after the revelation, but she decides to be strong. Allison is shocked even further when it's revealed Scott is a werewolf at the school formal. In the Season 1 finale, Kate entices Allison into joining her in hunting the Betas. Allison confronts Scott over his lies, but later Allison learns of what Kate truly is, sees Peter Hale kill her as revenge for the Hale fire, and helps to defeat Peter. Realizing that Scott's dishonesty was to protect her, Allison kisses Scott and tells him she loves him. In Season 2, Scott and Allison are shown to be in love, but carry on their romance in secret after Chris threatens Scott and she promises to never see Scott again. Her grandfather, Gerard, decides that it is time she be trained to be an official hunter, which in her case means being groomed to eventually succeed her mother as the family's leader. Allison helps Scott and Stiles deal with the Kanima and its mysterious Master. Allison is devastated in "Party Guessed", when she learns that her mother Victoria is dead. She is later corrupted by Gerard emotionally, who uses Victoria's suicide to use her to attack and kill Derek's pack, straining her relationships with her friends and Chris. She comes close to murdering Erica and Boyd, but Chris shoots her bow out of her hand saving their lives. In the Season 2 finale, when Gerard holds her captive with the Kanima so he can force Scott to have a paralyzed Derek Bite him to cure his cancer, Allison realizes what her grandfather is, and her mistake. Allison, saddened by the death of her mother and feeling guilty, breaks up with Scott. Scott accepts this. Allison also reconciles with Chris, after all they've lost.

At the start of Season 3, Allison returns to Beacon Hills having spent the summer with Chris in France and has had no contact with Scott whatsoever in the past four months. Although she and Scott are no longer together, they still care deeply for each other. She and Chris have made a pact to lay aside their family legacy to start a real, normal life. Eventually Allison finds out from Scott that Victoria tried to murder him back in Season 2 which is why Derek Bit her, to save Scott's life. Allison accepts this. In violation of her agreement with her father, she begins to help Scott and Derek fight against the Alpha Pack. Allison and Isaac also mend fences as she attacked him during her moral spiral, so much that they frequently partner up to deal with the current situation and they develop feelings for each other. Isaac is chosen as her tether when she has to undertake a dangerous ritual to save her missing father from being sacrificed by Jennifer Blake, the Darach. Deaton warns her along with Scott and Stiles that sacrificing themselves, temporarily, will have lasting mental effects on them, such as having a permanent darkness around their hearts. In "Lunar Ellipse", Allison, with help from Isaac, finds the parents in the root cellar just before Jennifer sacrifices them. In response to the Nemeton's activation, Allison convinces her father to bring both of them out of retirement, accepts her role as leader of the family and states a new code: "Nous protégeons ceux qui ne peuvent pas se protéger eux-mêmes": "We protect those who cannot protect themselves" in English.

In "Anchors", as a result of her sacrifice to the Nemeton, Allison suffers from hallucinations of Kate and trembling which interferes with her motor and archery skills. Using her new code as an anchor, Allison regains her confidence and skills, saving Malia Tate's life. Allison appears slightly hurt, but shows acceptance when Scott starts going out with Kira. After a series of fits and starts, Allison also starts acting on her feelings for Isaac, entering into a romantic relationship with him. Isaac is electrified and induced into a coma by a trap set by off the Nogitsune saving her life. In "The Fox and the Wolf", Allison suffers a minor breakdown from all the pressure on her shoulders, confessing to Sheriff Stilinski she seems to always feel scared due to the dangers and she's conflicted over her feelings with Scott and Isaac, the latter she thinks could be dying. In "De-Void", to her content relief Isaac recovers, and spends the night with her. With Kira's help, she keeps him and the twins at bay when it's realized they are under the Nogitsune's control. After Lydia is kidnapped by the Nogitsune in "Insatiable", Allison sets out to search for her with Isaac. She is pleased that Isaac was himself when he slept with her before the Nogitsune's fly took control. In the meantime, Chris shows her how to cast her silver bullet as part of her allegiance to the Code to 'graduate' as a hunter. She opts to make a silver arrowhead instead, since the bow is her weapon. She tells Chris she loves him and is proud of what they've done. At Camp Oak Creek, the Nogitsune gains control of the Oni and turns them against Kira, Isaac, and Allison. During the fight, Isaac is slashed by the Oni and is about to be killed. Allison draws her final arrow, her silver arrowhead and fires it into the Oni, destroying the demon and saving Issac's life. Another Oni runs her through with its sword. Allison collapses into Scott's arms, and he tells her that Lydia is safe. Dying, she comforts a horrified Scott, saying it's perfect, that she's in the arms of her first love and tells Scott she loves him. She tells Scott he has to tell her father something. Allison dies.

In the Season 3 finale, "The Divine Move", Isaac figures out Allison wanted Scott to tell Chris that the Oni are vulnerable to silver; she'd forged four additional arrowheads, one for each demon. Chris and Isaac head to the school, joining the final stand against the Nogitsune, and using the arrowheads, destroy the last of the Oni, avenging Allison. After the Nogitsune's defeat, Scott, Stiles and Lydia return to their normal lives mourning their close friend's death. Chris and Isaac leave Beacon Hills together to help each other cope. In Season 4, the loss of Allison has left its mark on everyone; Scott, Chris and her friends, while still mourning, attempt to come to terms with her death. Towards the end of Season 4, it is revealed that Meredith Walker had put the Dead Pool online, because of how many people had been lost because of Beacon Hills' supernatural forces, with her Hearing Lydia's anguish to Allison's death being the catalyst. Likewise, Kate Argent believing Scott and his Pack got Allison killed, had long plotted to have them killed in revenge.

Allison was naturally caring, sweet, charming, strong-minded and loyal to her friends and family, going to great lengths to protect them. She was best friends with Lydia and was deeply in love with Scott, disobeying Chris' violent demand that she break up with him. However, after she was corrupted by Gerard in Season 2, she temporarily changed becoming reminiscent of Kate; sadistic, bloodthirsty and cold-hearted, even to Scott. Though, after Gerard threatened her life, she showed genuine guilt and contrition for her actions. Allison had a natural talent for archery and is an accomplished gymnast. As a werewolf hunter, Allison displayed skills in hand-to-hand combat, wiring vehicles, first aid, hunting werewolves and weaponry such as Chinese ring daggers as well as her archery skills.

"Teen Wolf: The Hunt", a Teen Wolf inspired social network game, states that Allison was born on March 19 in Elkhorn, Wisconsin. She likes archery, running, and Unicef, and is a fan of Karmin, Arcade Fire, Florence and the Machine, and Vampire Weekend.

Colton Haynes

Jackson Whittemore is the former co-captain, of the Beacon Hills lacrosse team and the former captain of the school's swim team. Jackson's birth parents were Gordon and Margaret Miller. They died in a car crash on June 14, 1995, but Margaret was kept on life support long enough for the doctors to deliver Jackson by c-section into the middle of the night as his birthday is June 15th. He was adopted by attorney David Whittemore and his wife. In compensation for their deaths, Jackson is to receive a large insurance settlement on his eighteenth birthday.

Jackson is the big man on campus at Beacon Hills High, and has a competitive, selfish and aggressive nature, which shows through hostility towards people who best him. The show implies that he wants to make others proud of him and this desire to always be the best appears to stem from his insecurity about his adoption and the fact that he does not know his real parents, leading him to be unable to see his adoptive parents as his true mother and father. Despite his abrasive character, he is shown to care for his friends and dislikes hurting them. It turns out he is genuine friends with Danny Mahealani and he actually cares more for Lydia Martin than he lets on, though he'd never admit it. During Season 1, Jackson is angered and suspicious by Scott McCall's sudden, seemingly impossible improvement on the lacrosse field and other activities repeatedly besting him. Consequently, he investigates Scott, eventually coming in contact with Derek Hale and being accidentally scratched by Derek in "Magic Bullet" (who was poisoned with wolfs bane at the time and partially passes the poisoning onto Jackson through the claws), witnessing the Alpha werewolf in "Night School" and eventually discovers Scott is a werewolf. He threatens to expose Scott unless he helps him become a werewolf too. The Argents grew suspicious of Jackson. At the school formal he gets drunk and exposes Scott's werewolf nature to them. In the Season 1 finale, "Code Breaker", he regretted turning Scott over to the Argents, and helps Scott, Allison and Stiles defeat the Alpha werewolf, Peter Hale. Later Jackson appears the Hale house demanding the Bite from Derek because he helped him.

In the Season 2 premiere "Omega", it's revealed Derek had Bitten Jackson, which he takes with absolute smugness. However, Derek notices his body is rejecting the transformation, causing black blood to bleed out of his orifices. In the fifth episode of Season 2 "Venomous" it is revealed Jackson instead became a Kanima, a murderous reptilian shapeshifter that is a weapon of vengeance. Jackson, as the Kanima, commits numerous murders throughout Season 2. Jackson does not know that he is the Kanima, nor does the Kanima side of him know that it is Jackson. In his Kanima form, Jackson was nigh unstoppable: he had enhanced strength and agility that far exceeded the werewolves, even Derek, the Alpha werewolf, the Kanima could heal from being shot by Chris repeatedly, Derek slashing its throat, and Allison putting an arrow in its head and stabbing it in the chest. The Kanima's claws also produced a paralytic poison that could completely immobilize a victim by the Kanima slashing the back of the neck and it could scale walls. The Kanima seeks a Master who wishes to exact revenge on others to control the shapeshifter and the Kanima carries out whatever vengeance the Master bids, revealing that as the Kanima, Jackson's every move is controlled by someone else. In the episode "Fury", it's revealed Jackson came across an unstable, traumatized student, Matt Daehler who became his Master. Matt had the Kanima murder former Beacon Hills High students who almost caused him to drown when he was a little boy during a drunken pool party. After Gerard Argent kills Matt, he becomes Jackson's new Master. It is revealed that Jackson became the Kanima because he is an orphan, exemplified by his outward behavior and personality, meaning he lacks an identity. He can be saved by a person with whom he shared a true bond; in Jackson's case, this person is Lydia. Through Lydia's selflessness in the Season 2 finale, "Master Plan", the Kanima reverts to Jackson. Aware of what he is, Jackson then allows Derek and Peter Hale to kill him. Dying, he asks Lydia does she still love him, she responds that she does. Jackson returned to life and finally becomes a werewolf, however, with blue eyes rather than the common yellow. His eyes as a werewolf are blue, because as the Kanima he took innocent lives (regardless of his intent); Derek, Peter, and the twins Ethan and Aiden share this feature.

"Teen Wolf: The Hunt", a Teen Wolf inspired social network game, states that Jackson was born on June 15. He likes Porsche, Golden State Warriors, USC Trojans, and the San Jose Sharks, and is a fan of Wiz Khalifa, Nicki Minaj, Drake, and Gym Class Heroes.

In the Season 3 premiere, Lydia revealed that Jackson was trained by Derek to control his werewolf abilities, and his animal side. Later he and Lydia parted and his father moved him to London.

In Season 2, Peter appears in Lydia's hallucinations as a teenager, successfully seducing Lydia before revealing his true identity, to her horror. Peter knew Lydia would be immune to the Bite, so instead Peter had spiritually imprinted himself in Lydia as his back-up plan, should he be killed. He psychologically tortures Lydia into following his instructions. In "Party Guessed" by using Derek's blood as an Alpha and the light of the Worm Moon, Peter successfully has Lydia resurrect him. It is revealed by Deaton, that Peter lost his Alpha status upon resurrection and his abilities are subsequently impaired.^[7] Throughout Season 3, Peter has an uneasy alliance with Derek and the gang after helping them against the Kanima. It's depicted in the past that even before the fire, Peter was a manipulator and a trouble maker; he started a chain of events that lead to the death of Derek's first love, Paige. Peter felt envy and resentment over his older sister Talia's leadership of their family, firmly believing the role of Alpha was his. Sneaky and malicious as always, Peter has shown to somewhat care about his remaining family, Derek and his other niece Cora, most likely out of convenience. When Cora is dying of mistletoe poisoning in "Alpha Pact", Peter tells Derek of a technique to cure sickness with pain transference as a way to save her, but he'll give up his Alpha status. When Derek decides to go through with it, Peter sneakily grins in triumph. In the mid-Season finale, after Scott becomes a True Alpha, Peter prevents Jennifer from attempting to re-energize herself using the Nemeton again. The Darach reveals she knows he plans to kill Scott to become an Alpha agin. Peter kills Jennifer, proudly and malevolently boasting that he's "always been the Alpha". In Season 3B, Peter goes along with Derek on the latter's mission to recover Talia's claws from the Calaveras. Derek has Peter use Talia's claws to conduct a ritual so Derek could communicate with Talia, in exchange he tells his nephew he wants to keep the claws. In "Letharia Vulpina", Peter tells Lydia he will help her control her banshee nature on the condition that she do something for him: he wants her to listen to Talia's claws and translate a memory that she had wiped from him before her death. Lydia manages to listen and she discovers that Peter had fathered a child, the werecoyote Malia Tate, but refrains from telling him her name. In "De-Void", after the Pack paralyze Void Stiles' body, Lydia calls Peter for help. He complies, but Lydia has to give him his child's name. Peter shows Scott how to utilize an Alpha's power to meld minds so that he and Lydia can enter Stiles' mind to find Stiles and guide him back. Lydia gives Peter Malia's name.

In episode "117" of Season 4, Peter comes face-to-face with Malia, to his shock, though Malia is initially kept in the dark about her relation to him. Peter has also regained his full strength and werewolf abilities. He learns of Kate Argent's survival and faces off against her when she infiltrates the Hale vault, but 'the Benefactor' simultaneously robs the Hales' fortune, $117 million in bearer bonds, to his anger. In "Orphaned", Peter approaches Kate with a proposition: he offers her control over her werejaguar shapeshift. In return, she helps him recover his money and implement his plan to kill Scott. In "Time of Death", Peter meets with Malia after she finds out he's her biological father, showing her the file confirming her adoption. He offers her his help in finding her biological mother whom is known as 'the Desert Wolf'. After it's revealed Meredith Walker is the Benefactor in "Monstruous", Peter, reading Meredith's mind, sees that through Meredith telepathically hearing his vengeful thoughts, he was responsible for the Dead Pool. He is amused by the whole ordeal, defending himself saying his 'plan' was the ravings of a lunatic, that comatose for a werewolf is beyond torture. At the end of Season 4, Peter and Kate initiate the plan to kill Scott. Kate abducts Scott and transforms him into a Berserker. Peter goes along with the Pack when they rally to go up against Kate, ostensibly promising Malia she'll meet her mother if she kills Kate, and imploring the Pack not to hold back against the Berserkers. The plan fails at the last minute when Scott is able to break free of being a Berserker. Scott confronts Peter that he figured the plan out to kill him for power. Showing his true colors, Peter viciously retorts that he pursues power for his family, that the one to inherit it is him, telling his werewolf progeny he doesn't deserve his power. Peter clashes against Scott. Peter gets the upper hand but Scott triggers new strength and swiftly defeats Peter, telling him he "was never an Alpha, he was always a monster". Peter is drugged with yellow monkshood, brought back to Beacon Hills, and incarcerated in the supernatural wing of Eichen House. He is held in a cell with Valack.

In Season 3A, Chris and Allison have retired from hunting to stay out of supernatural affairs. In "Fireflies", Scott goes to him for help in stopping Cora and Boyd when they are under the influence of the full moon. Chris initially refuses saying Scott's world "decimated his". After seeing a supposed victim of their rampage, he relents assisting Scott, Derek, and Isaac, in finding and capturing them. Despite saying that he has retired, Chris starts getting involved with the Alpha Pack situation in "Motel California" and is revealed to have been hunting the Darach for some time and knows also about Allison's continued involvement. He has also grown more amicable and compromising with Allison's relationships with her friends. When Jennifer names him as the final sacrifice, Chris hands himself over to keep his daughter safe and is kidnapped by her. He is held in the Nemeton along with Scott's mother and Stiles's father, all three being Guardians of their children for the final sacrifice. Chris and the other parents are eventually rescued by his daughter, Isaac and Stiles. He decides to re-work the werewolf hunter's code with Allison in the mid-Season 3 finale and "protect those who cannot protect themselves", since the Nemeton had been revitalized. During Season 3B, when the Oni appear in Beacon Hills, Chris relays a tale to the group in "Silverfinger". 24 years earlier, at the age of 18, Gerard had Chris conduct his first gun deal leaving out the fact that the customers were Yakuza. During the meeting, three Oni appeared and went after the Yakuza boss, the kumichō, who was supernatural, possessed by a Nogitsune. Chris had survived and saved the life of a man called "Silverfinger" by shooting one of the Oni directly in the face, shattering its mask. Chris and Derek also come to solve their differences in "Letharia Vulpina", when Derek saves his life, shielding Chris from the blast of a bomb, and after Derek is freed from the Nogitsune possession in "De-Void", Chris tells Derek he's not his enemy anymore. In the penultimate episode of Season 3, when he shows Allison how to cast a silver arrowhead to graduate as a hunter, Allison takes the time to tell Chris she loves him and she's proud of what they've accomplished. Chris later arrives at the Oak Creek camp and sees that Allison has been killed. In "The Divine Move", Chris feels devastation, but knows how to deal with it saying he has the capacity and a skill to compartmentalize his emotions. He actually comforts Isaac over the latter's sorrow. Isaac figures out that Allison wanted Scott to tell him that she had destroyed the Oni with her silver arrowhead. He has Chris recall his first deal where he'd shot off an Oni's mask; Chris had fired a silver bullet, but the bullet must have gone through and through: silver is a poison to the Oni. They come to the school and destroy the remaining Oni with the arrowheads avenging Allison. Chris leaves Beacon Hills for France with Isaac in tow to permanently put away the Nogitsune trapped in the triskele urn and to help each other come to terms with the death of his daughter.

In Season 4 "The Benefactor", Chris returns to Beacon Hills after receiving Scott's text telling him Kate is alive and in Beacon Hills. Chris arrives just in time to help Scott corral and subdue Liam. While apparently dealing with Allison's death, determined to honor her by upholding her Code and resolved to protect her loved ones during the Dead Pool situation, Chris is shown to be desolate, harboring immense grief. Chris receives a visit from the Calaveras who come to enlist him in hunting Kate, intending to have Chris return to the ways of the Hunter's Code. In "A Promise to the Dead", Chris tracks Kate's Berserkers to the sewers, but he's captured by Peter. The werewolf pegs Chris to the sewer wall through a rebar, then bending it, trapping him. He is found by Parrish but eventually Chris tells Parrish to just leave him, to warn Scott about Peter and Kate, and gives into his grief, telling Parrish, "I've got nothing left". Parrish refuses, telling Chris he knows about Allison, and how she felt about Scott. He entices Chris to use anger over how Allison would feel if Scott were in danger, and Chris eventually breaks free. In "Smoke and Mirrors" Chris and Parrish, along with the Calaveras arrive at La Iglesia and face off against Kate and her Berserker. Chris subdues Kate, shooting her with a yellow monkshood laced bullet. Kate defends her actions telling Chris that Scott and his friends got Allison killed. Chris firmly tells his sister that Allison died saving her friends' lives. He admits he won't kill her, but wonders is she worth saving. When Kate escapes, Chris leaves with the Calaveras to hunt her down as his part of a deal he eventually made with them, in exchange they have to leave Scott's Pack in peace.

In Season 3, Stilinski again has a murder spree on his hands, this time committed by the Darach. Stiles is reluctant to let his father in on the supernatural business out of fear he could be killed. Eventually in the episode "The Girl Who Knew Too Much", he attempts to tell Stilinski the truth using previous seemingly inexplicable incidents, but Stilinski says he doesn't know what he's seen, harshly trying to end the argument. Stiles talks back, saying, "Mom would've believed me." Stilinski later uncovers information on a hunch about the supernatural and discovers Jennifer Blake about to kill Lydia, witnesses Jennifer removing her glamour talent to reveal her actual face, the Darach, and Scott in his werewolf form. Jennifer abducts him for the guardians' sacrifice. He is held in the Nemeton along with Melissa McCall and Chris Argent. He is now brought up with the supernatural. In "Alpha Pact", he relays a story eight years ago; when Claudia was on her deathbed. He was helping a girl who was caught in a car accident. He was holding the girl's hand and her grip tightened. She'd comforted him saying if his wife was dying, he should leave and go be with her. Ultimately, he didn't waiting for paramedics to arrive instead. Claudia had already died when he arrived and Stiles had been with her. If he'd believed in the supernatural, believed that the girl psychically knew that Claudia was dying, he would've been with his wife in her final moments. He and the parents are rescued by Allison and Isaac just as Jennifer is using the storm to bury them. Stiles arrives holding up the ceiling of the root cellar with an aluminum bat and is reunited with his son.

Finally brought into the supernatural circle of Beacon Hills, and subsequently closer to Stiles, Stilinski starts to search through old cases which he suspect could involve a supernatural creature, particularly the case of Malia Tate. He asks Scott to help him to find some clue in Malia's house, but this proves unsuccessful. Later, Stiles admits to Scott this action was his last attempt to solve some case when he's still the sheriff, since Rafael, Scott's father is having Stilinski impeached for a "lack of resolution and ability to close cases". However, with Scott and Stiles' help in the following episode "More Bad than Good", Malia Tate is found alive and he reunites her with her father and Stilinski closes the case in Rafael's face. Stilinski temporarily puts his dislike of Rafael aside in "Riddled" when Rafael finds Stiles after he goes missing and shakes his hand in gratitude. Stilinski has been taking notes of Stiles' growing symptoms and has him undergo a test for the same disease that killed Claudia. When he sees a brain scan similar to his wife's, he is visibly shaken.^[8] However, later, Scott reveals to Stilinski Stiles is possessed by the dark trickster, the Nogitsune. Displaying belief in the supernatural, Stilinski clues in on the fact that the Kitsune is a trickster, he realizes that Stiles' MRI results are fake. They are virtually similar to his wife's results, courtesy of the Void kitsune: he relates to his time in the army; he was taught that to defeat a foe, "you take away their hope". Rafael helps to talk Stilinski out of the impeachment case, saving his career and admits he only needed a reason to stay in Beacon Hills so he could make things up with Scott. Stilinski attempts to give Rafael some sound advice, that he reveals to Scott why he left. In "Insatiable", when he sees the Nogitsune has been exorcised from his son, he gives Stiles a tight hug. In "The Divine Move", the Sheriff and his new assistant Deputy Parrish are attacked by the Oni, they put up a good fight, but are overpowered and dying but are saved when the Oni are destroyed. In Season 4, Stilinski learns of the Dead Pool from Scott and Stiles; he has the hit list run through recognition to find the intended targets. Stilinski and Stiles are having money problems, trying to pay for the MRI test and the "visit" to Eichen House which are both long overdue. Stiles is tempted to use the Dead Pool money Scott found to help solve the problems. Later on however, because Stiles was almost murdered by Brunski, their Eichen House bill is dropped as a gesture of apology. In the Season 4 finale, "Smoke and Mirrors", Stilinski saves Lydia and Mason from a Berserker using a Claymore mine, destroying the demon.

In Season 3, Melissa is closer to Scott having somewhat come to terms with his world, assisting him in the dangers in Beacon Hills, attempting to smuggle Isaac out when he's committed to the hospital and helping Stiles identify a new killer in Beacon Hills by allowing him access to the morgue. In the episode, "The Overlooked", during the evacuation of the hospital because of a thunderstorm, Melissa finds Ethan and Aiden in their merged form attacking Scott. She saves her son by electrocuting the twins with a defibrillator. She helps Scott the others with their plan to help Jennifer, the Darach, escape the Alphas (Jennifer had poisoned Cora and kidnapped Stilinski for leverage), but Jennifer double-crosses them and kidnaps Melissa. Melissa is later held in the Nemeton along with Stiles' and, later, Allison's fathers for the final sacrifice, Guardians. In "Lunar Ellipse", she and the other parents are rescued by Isaac, Allison and Stiles. Like Scott she is not happy with her ex-husband and Scott's father, Rafael back in town. In "Anchors", Melissa, along with Scott, is angry when Rafael conducts a case for impeachment in his attempt to fire Sheriff Stilinski. Right afterward she realizes Scott is about to lose control of his wolf side. More used to the supernatural, she helps him regain control by telling tell him to "be his own anchor", as Allison was his anchor and they've parted which Scott manages to do. After that she comforts and promises him that people fall in love more than once. Melissa has also had the McCall residence installed with ash wood base boards with Deaton's help to work as wards against supernatural intruders which she arms when the Oni attack the house. Mellisa, Stilinski and Scott's issues with Rafael are revealed in "Insatiable": when they were married, Rafael used to be a heavy drinker. One time, when Scott was only a toddler, Rafael came home drunk and got into an argument with Melissa. Rafael had accidentally knocked Scott down the stairs bruising his head on the floor and she had kicked Rafael out. She'd confided in Stilinski, whom later became an alcoholic following his wife's death, exacerbating spite from Rafael. In the Season 3 finale, the hospital is attacked by the Oni, and Melissa makes Rafael promise her, if she doesn't make it, he is to make things up with Scott. Melissa is saved when the Oni are destroyed and the Nogitsune is defeated. Melissa comforts her son when he finally takes the time to mourn Allison's death.

During Season 4, because of all the antecedent damage done to the hospital, Melissa is late in paying her bills for the house, forcing her in having to make double shifts at the hospital. Eventually, she calculates the cost of the budget to learn how long before she and Scott could lose their house. Scott, worried for Melissa, hides the duffel bag full of Dead Pool money, paid to the assassin Garrett, in his room, hoping it could solve their financial crunch. In "Time of Death", Melissa takes part in Scott's plan to have Scott fake his death to catch 'the Benefactor'. She hates the plan when told Scott will die for real if Kira doesn't shock him again within 45 minutes. Melissa snaps at Noshiko asking why are they, as parents, letting their kids handle these dangers. Noshiko answers her, that they'll be asking them to "run and hide" instead. Melissa finds the Dead Pool money in "A Promise to the Dead", and confronts Scott, saying while he can "save lives", he can't save people "from life", convincing her son to return the money to the Hales.

In Season 3, Alan has taken on a mentor-like figure to Scott and his friends, lending advice on the supernatural. In the episode "Unleashed", Stiles comes to him concerning a new killer committing Human Sacrifices, having linked the murders to the Celtic Druids and that he always seems to have more information than anyone else. When Stiles demands why he's always so cryptic and withdrawing, Alan alludes to have had a dark past that presumably caused him to go into retirement when he answers to have spent the past decade "trying to push something away" with the lies and the denial, that it could have a powerful effect on someone. When Lydia calls saying the music teacher has been taken for to be sacrificed he helps Stiles and Lydia identify the new killer as a Darach. He also identifies the pattern of the sacrifices of being groups of three offering the Darach its type of power - Virgins, Healers, Philosophers, Warriors. It is discovered Marin is actually his younger sister, and that he and Marin are both Emissaries, Druid practitioners, that function as advisers to the werewolf Packs and ambassadors between them and humanity. Alan fulfilled this role for the Hale family, and was especially close to Derek's mother, Talia Hale. In "Alpha Pact", he helps Scott, Stiles and Allison find their parents, by proposing they take a sacrificial Druid ritual in order to locate the Nemeton which will have consequences for them, leaving a "scar" around their hearts for the rest of their lives and being substitute Guardian sacrifices for the parents which will fully revitalize the Nemeton, subsequently attracting the supernatural to Beacon Hills like a magnet. They decide to do it, to sacrifice themselves temporarily with someone to pull them back as a tether. Alan fulfilled this role for Scott. Later, Alan, with help from Cora and Lydia, saves the lives of the twins, Ethan and Aiden after the Darach nearly killed them.

In "Anchors", Scott and Stiles come to Alan concerning their and Allison's psychological issues as a result of the Druid sacrifice. He informs them that when they died and subsequently resurrected, they essentially opened 'a door' in their minds which is still ajar. He tells them an opening into their minds is dangerous, that they each need to 'close that door'. When it's revealed the Nogitsune is possessing Stiles, Deaton heads to Japan in "Letharia Vulpina", to retrieve a sample of a plant called letharia vulpina that was born out of the blood of the very Nogitsune Chris Argent saw killed 24 years earlier, which makes the plant "quite special". Upon arriving back in Beacon Hills, he poisons Stiles with the plant which temporarily breaks the Nogitsune's hold over Stiles. After Scott retrieves the Shugendō scroll in "Echo House", which has instructions on how to exorcise a Nogitsune, Deaton translates that the host's body has to be changed. In "The Divine Move", Deaton confirms that the Hales' triskele urn could imprison the Nogitsune because it was crafted by Deaton himself, out of wood of the Nemeton tree. At Season 3B end, after Allison's death, Deaton provides counsel for Scott with the fallacy "Regression to the Mean", saying things will stop being all bad, or all good and always revert to a neutral space. In Season 4, Alan sets out to learn what Kate did to Derek, causing him to revert to being a teenager, the subsequent loss of his werewolf abilities and what it means for him. He visits an inmate at Eichen House's floor for supernatural threats, Dr. Valack. Valack asks him why, Alan answers he made a promise to a woman he loved (Talia Hale) that he would look after Derek. Valack inflicts a psychic vision upon Alan concerning La Iglesia. Lydia snaps Alan out of his vegetative state and tells the Pack the old Mexican church is where Scott and Kira will be found after they're taken by Kate.

In Season 2, Danny helps Jackson recover lost footage from his camera which Jackson shot for his first full moon transformation with Jackson's instruction not to watch the footage. He manages to do so with help from Matt Daehler whom he is attracted to. He doesn't act on his attraction because Matt's into Allison. In "Frenemy", he is shown to be depressed over his break-up with his ex-boyfriend, Damon at the gay club, Jungle. Presumably, because the Kanima's Master wanted to remove any evidence, Danny is attacked at the club, but is only paralyzed by the Kanima and the footage Danny recovered from Jackson's video has vanished. In the episode, "Battlefield", he is warned by Jackson to not get anywhere near him during the lacrosse finals game, most likely because Jackson is somehow aware he is the Kanima and is killing people.

In Season 3, Danny develops an interest in Ethan, one of the Alpha pack,^[9] unaware that Ethan was originally using him to get leverage on Scott. Although Danny doesn't realize it, his relationship with Ethan softens the werewolf to the point where he is willing to change for the better going as far as meeting Scott and Stiles halfway. In episode 7 "Currents", Danny is lethally poisoned with mistletoe by the Darach and his lung collapses. Ethan, obviously excessively worried about Danny, helps him to the hospital, where Melissa McCall saves his life using a needle thoracostomy. It's revealed Danny was targeted by the Darach because he did a project on telluric currents which were placed on the locations of where the Darach was sacrificing his victims. Despite the fact that Ethan was only supposed to manipulate Danny's feelings to gain information, as Aiden had been assigned to do with Lydia, he eventually fell in love with Danny and is shown to have several tender moments with him. However, in season 3B, after their separation and Ethan and Aiden later decide to re-enroll in high school, Danny is shown making out with Damon, his ex, which Ethan is clearly upset about, to Aiden's amusement. In "Illuminated", because of the power outage, Danny wants to hold a black light party, but is cut down. Ethan and Aiden help him out by acquiring a power generator and letting him use Derek's loft for the party. Danny is very pleased with the results and bonds with Ethan again. In "Letharia Vulpina", Danny is seen with the cross country team on the track where traps are laid by the Nogitsune and Ethan tackles him to protect him and says he missed Danny and proceeds to make out with him. When Coach Finstock is shot by an arrow triggered by a trip wire, Danny looks on while Ethan stays protectively beside him. In "The Divine Move", Ethan comes to break up with Danny, saying he can't stay after Aiden's death. Danny lets Ethan down gently, breaking up with him instead, saying that while he likes Ethan, he can't date a werewolf - Danny was aware of the supernatural all along, to Ethan's surprise. Ethan gives Danny a kiss goodbye.

Teen Wolf: The Hunt, a Teen Wolf inspired social network game, states that Danny was born on Leap Day (February 29) and likes computers and photography. He is a fan of Jay-Z, Bruno Mars, and Janelle Monae.

In the Season 3 finale, it is revealed Kate survived Peter's attempt on her life. She appears and attacks a team of the Calavera hunters in Derek's loft before shooting Derek himself and abducting him. As Peter had slashed Kate's throat, it is revealed Kate had become supernatural as she transforms into a shapeshifter, a werejaguar. It's seen in flashbacks, Kate had begun to heal after she was killed with Peter's claws, she was reviving. The Calaveras came to check if she was really dead and saw her transforming instead. They switched out Kate's body from the morgue and took her to Mexico. They demanded she kill herself to follow the Hunter's Code. Instead Kate faked her suicide, and when the hunters inspected her, she killed half a dozen of Araya's men and escaped. Kate lacked control over her shapeshifting, leaving a trail of bodies behind her. Kate was instinctively drawn to La Iglesia, the ruins of an Aztec temple which worshipped Tezcatlipoca, the Nagual-jaguar god. With her werejaguar status, she found and gained control of a pair of Berserkers giving herself muscle and protection. While in hiding, Kate discovered a cassette someone had anonymously left her; the tape revealed information about the Hales, specifically their artifact, the Triskelion which was used by the Hales teach their young control on a full moon. Needing to learn control, Kate decided to acquire the Triskelion, which lead to her kidnapping Derek.

In "The Dark Moon", it is revealed Kate had taken Derek to La Iglesia. Using the magic of her species' god, Kate had Derek regressed to the time of his life when she'd seduced him, when he was in love with her, before she'd set the fire. In "117", she had him reveal the location of the Hale Vault to her and had her Berserkers hold off Scott and his Pack. Peter arrived at that point amused, letting Kate know the Triskelion didn't have any magic that helped a shapeshifter learn control, it was simply a physical placebo for young Betas to focus on when learning control. Angered, Kate faced off against Peter, but smoke bombs were set off by an unseen figure. In the chaos, Kate escaped and called off the Berserkers. Kate had been tricked into opening the Hale Vault so "the Benefactor" could steal the Hales' fortune, to use for financing the Dead Pool. Assassins began arriving in Beacon Hills over Season 4 for the money and being worth $12m, Kate begins a manhunt for 'the Benefactor', the person she realizes left her the cassette to find, leading her to killing 'the Orphans' and confronting Scott and Chris. She tells Chris she needs more time for learning control before eventually confronting him, and when the Berserkers overpower them she spares Chris' life when one Berserker almost kills him. Kate is later approached by Peter, her would-be killer; she accepts his deal, he offers her control over her shapeshifting, she helps him get his money back and help to implement his plan to kill Scott unaware he plans to stab her in the back. Kate masters control later on. She attacks Scott and Kira in "A Promise to The Dead", abducting them and taking them to La Iglesia. Kate had learned from Peter her species, the werejaguar, as "La Loba" 'the Bone-Woman' that she has the talent not only to control the Berserkers, but also to create new ones using a vessel. Kate wickedly has Scott transformed into a Berserker planning to have him fight his friends so to have them kill him, or vice versa. In "Smoke and Mirrors", Kate faces off against Scott's allies along with the Calaveras. She kills multiple hunters, but she is defeated by being severely mauled by Derek in his new full wolf shapeshift, and being shot by Chris with a yellow monkshood laced bullet. Kate appeals to her brother saying her intentions were to have their family's legacy return to power after it's decimation, and to have Scott and his Pack killed in revenge for Allison's death. Kate tells Chris she knows he won't kill her and escapes.

Isaac was the first of Derek's Beta werewolves to gain control of his animal side during the full moon, and in spite of his dark family-life, Isaac has good intentions and a warm heart. At first, Isaac did not like Scott and did not trust him, because he believed Scott was a loser because he wondered how Scott survived so long without a pack. Nevertheless, he eventually trusted Scott when he realized he has good intentions, and becomes friends with him. Among the dangerous events throughout Season 2, Isaac sides with Scott, revealing that he trusts him and holds onto Scott's friendship because he doesn't have anyone there for him. He helps Scott against Gerard when Gerard takes control of the Kanima, but he is stabbed by Allison. After Jackson is cured of being a Kanima and Gerard's defeat, Isaac stays as a part of Derek's Pack instead of following Boyd and Erica, but holds onto Scott's friendship.

At the start of Season 3A, Isaac is revealed to have found where the Alphas have been keeping Erica and Boyd, however he was attacked by them and had his memory wiped. Isaac was rescued by a mysterious woman. To cure his amnesia, Dr. Deaton helps Isaac remember the night he had his memory wiped using an ice bath and remembers that Erica is already dead, while Boyd is being held captive by the Alphas with another werewolf named Cora. He later participates in helping Scott and Derek capture Boyd and Cora, who are rabid from the full moon with assistance from Chris Argent. Isaac takes on a despise the twins, Aiden and Ethan, blaming them for the supposed death of the girl who saved him and the numerous sacrifices, and stands off against them. Allison apologizes to Isaac for attacking him back in Season 2 and assists him in his vendetta against the twins. He teams up with her against the threats throughout the season becoming closer, eventually forgiving and developing feelings for her. After being thrown out of Derek's loft by Derek to protect him from Derek himself, he moves in with Scott and Melissa. In "Alpha Pact", Isaac later becomes fed up over Derek's intentions, the deaths of Boyd and Erica, and confronts him about how people always get hurt around him and his pursuit of power, leading to him rejecting Derek as his Alpha and leaving Derek's Pack. Isaac is chosen to be Allison's tether when she undertakes a dangerous druid ritual to find her father. During the mid-season finale, he helps Allison, Stiles, and Scott find their parents. With Scott becoming a True Alpha, Isaac joins his Pack.

In "Anchors", Isaac starts acting on his feelings towards Allison, even attempting to kiss her, following her for her protection and arriving at her apartment, to her mutual consent. He is open about this with Scott who is evidently uncomfortable at their budding relationship. Isaac still holds a grudge towards Ethan and Aiden saying they can't join Scott's Pack because of their part in Boyd's murder and taking glee when Scott says no. After helping Allison with research on William Barrow, Isaac is confronted and "tagged" by the Oni. He later helps Allison and Chris retrieve information about the Oni, Kitsune and the Nogitsune from the Yakuza recluse, Katashi "Silver finger". He and Allison affirm their feelings for each other when Allison kisses him. Isaac is induced into a coma in "Letharia Vulpina", saving Allison from stepping into electrified water as one of the traps set by the Nogitsune possessing Stiles. In "De-Void", Isaac comes out of his coma and heals from his injuries, to Allison's happiness and they spend the night together, consummating their relationship. In "Insatiable", after Isaac is freed from the Nogitsune's possession, Isaac assists in looking for Lydia. He and Allison share a moment where he assures her he was himself during their night together before the Nogitsune infected him. After arriving at Oak Creek, Isaac fights alongside Allison and Kira against the now Nogitsune-controlled Oni. He is eventually outmatched and by the Oni. He is saved by Allison, who is fatally stabbed by the Oni right afterward. Visibly shocked and stricken, Isaac watches on as Allison dies in Scott's arms. In "The Divine Move", Isaac is devastated by Allison's death and finds comfort from Chris. Later, Isaac figures out that she had discovered that silver was the Oni's weakness and that her arrows could destroy them. Chris and Isaac head to the school with the arrowheads and kill the remaining Oni. After Scott and Kira exorcise the Nogitsune, Isaac seals the dark spirit in Derek's triskele box. At the end of Season 3B, Isaac decides to leave Beacon Hills, moving out of Scott's house and heading off with Chris to France to put away the Nogitsune for good, and help Chris cope with Allison's death.

"Teen Wolf: The Hunt", a Teen Wolf inspired social network game, states that Isaac was born on September 22, and likes lacrosse and BMX. He is a fan of M. Ward, Belle and Sebastian, Coldplay, and Feist.

At the beginning of Season 3, Marin is revealed to be somehow involved with Deucalion, the Alpha Pack leader. She is actually Alan's younger sister and they are both practitioner druids called Emissaries that act as advisers to werewolf Packs, liaisons between them and humanity and she supposedly fulfills this role for the Alpha Pack. Marin was originally the Emissary for Deucalion's original Pack and was the only one spared when the Alphas killed their Packs and their Emissaries. In the episode "The Girl Who Knew Too Much", Scott confronts her asking her what Deucalion wants with him. Marin replies he wants to make a killer out of him, because if Scott kills someone he'll destroy his potential to be a True Alpha or have Scott join his Pack, either way Scott is eliminated as a threat to Deucalion. In "Alpha Pact", after the Darach is revealed to be Jennifer Blake, she is seen fleeing from the Alphas in the woods but protects herself with a mountain ash circle. They had suspected her to have had a role to play with the Darach. Marin confronts Deucalion over his ruthlessness in his goal to form his 'perfect pack', that she'd begun to try and stop him. Kali tells her they know she sent the mystery woman to save Isaac and had begun helping Scott and his friends find a way to stop Deucalion. Marin reveals the woman's name was Braeden, that she'd sent Braeden to do what Marin herself does, "maintain balance" and reveals to the other Alphas that Alan had actually saved Ennis, but Deucalion killed him and lied to them about it being Derek who'd killed him. She tries to tell Kali he intended for her to force Derek's decision to join the Pack, because that paves the way for Deucalion's plans for him and Scott. Deucalion states she's lying and injures her with his cane but Scott saves her and she tells him where they can find the location of the last Druid massacre, the Nemeton.

In Season 3B, Marin appears in "Echo House", as a counselor at Eichen House, a mental hospital. She acts as Stiles's contact when he voluntarily checks himself in at the institution to prevent the Nogitsune from harming anyone. Marin leads group therapy, which includes Stiles and Malia, discussing the subject of guilt. Stiles and Malia both offer input on the feeling because of the Nogitsune possessing him and Malia over her changing on a full moon causing the death of her mother and little sister. Marin cuts the session short when she notices the electric burn marks on Stiles's neck, the site where Alan had injected the wolf lichen. Marin supplies Stiles with amphetamines to keep him awake as he needs to avoid sleeping when he'll be most vulnerable to the Nogitsune possession. Marin lets Stiles know if the burns disappear completely, the Nogitsune returns and Scott and Alan haven't found a cure by then, she will kill him by lethal injection to do what she does: "maintain the balance". Stiles understands and thanks her for the "illicit drugs". After the Nogitsune returns and escapes Eichen, Marin tells Malia where to find Scott so she can join in the hunt for Stiles.

In Season 2, he is first seen in episode "Ice Pick". Boyd becomes the third member of Derek's pack, completing the basic requirement for an actual werewolf pack. He joined so he wouldn't have to be the high school loner anymore. For most of the season, he was Derek's right-hand man and physically the strongest Beta werewolf of the pack. Derek treated Boyd distinctly differently from the way he treated Isaac and Erica. Isaac and Erica were sent in like attack dogs, while Derek held Boyd in reserve, as he was more mature and stronger than them. In "Party Guessed", he experiences his first full moon as a werewolf; he goes feral and almost gets loose but is subdued by a more successful Isaac. Boyd was close to Erica. They both became frightened of the Argents' vendetta, especially when the whole Pack had to go on the run and left Derek with her to find another pack at the end of Season 2. The pair are lead into a trap by the Argents using recorded wolf howls. Boyd saves Erica from being shot with an arrow by a vengeful Allison, but she relentlessly fires arrows into him, but Chris Argent shoots her bow away saving Boyd's life. After a short altercation with and capture by the Argents, Chris rebels against his family and sets them free. He and Erica attempt to flee Beacon Hills, but are trapped by the Alpha pack, leaving their fate uncertain.

In Season 3, it is revealed that Boyd and possibly Erica were alive and had been held captive by the Alpha pack for four months in the abandoned Beacon Hills First National Bank. During this four-month period, he and Erica had a heart-to-heart about them possibly becoming stronger during the lunar eclipse. Erica tried to fight back against the Alphas, but was killed. Boyd and Cora, Derek's younger sister who was also captured, were refrained from fully transforming during the full moons, by the hecatolite lined in the bank vault keeping the full moon from reaching them. This caused their rage and bloodlust to build up inside for months. He became friends with Cora over this experience. Upon being found by Derek and Scott, both of them lost all control and escaped into the woods to kill whomever they came across. They were later subdued by Derek, with assistance from Scott, Isaac and Chris Argent. Boyd re-joined Derek's Pack and returned to school still upset over the death of Erica. He participated in the battle against the Alpha pack, taking on Ennis with Cora, but is easily defeated by them. Knowing that Kali would eventually come to kill Derek to "avenge" Ennis' death, Boyd came up with a plan to weaken Kali using electrified water. The plan failed when the Alphas cut the power to the building. During Derek's fight with Kali, Boyd is held captive by Kali and she has the twins Ethan and Aiden hold Derek's claws upward. Kali then kills Boyd by impaling him upon Derek's claws, causing the latter to absorb Boyd's powers and see his memory of Erica's death, which shatters him. Dying, Boyd comforts Derek by telling him to not blame himself and that the sensation of the full moon was worth everything.

At the hospital after a seizure in "Ice Pick", Derek seduces her with the Bite, promising her that not only her epilepsy would go away, along with the side-effects, but she would become even better. Erica accepted the Bite, becoming a werewolf and the second member of Derek's Pack. She changed remarkably, her originally timid, self-conscious personality becoming more confident, snarky, flirtatious and stylish. She revealed that she used to have a huge crush on Stiles, but he never noticed her since he was "too busy" with his crush to Lydia. Erica was shown to be close to both Isaac and Boyd throughout the season, and repeatedly antagonized Allison. Erica had hit on Scott twice, hinting that she was attracted to him. She along with the rest of the Pack, attempted to stop the Kanima and goes rabid on her first full moon and has to be restrained by Derek. Near the end of Season 2, terrified of the Argents' werewolf genocide she and Boyd decide to leave Derek to find a new Pack, becoming Omega werewolves in the process, but are lead into a trap by the Argents. Erica is almost killed by a corrupted Allison, angry over her mother's death, but Boyd saves her life catching the arrow but is plummeted by multiple arrows from Allison. Erica hysterically begs Allison to stop when she readies a seventh shot, but Boyd is saved by Chris Argent. In the Season 2 finale, they were held hostage by Gerard, but were freed by Chris. While fleeing again, Erica and Boyd were trapped by the Alpha pack.

During Season 3, it is revealed that she and Boyd were held captive by the Alpha Pack in the abandoned Beacon Hills First National Bank. During captivity, she and Boyd had a heart-to-heart about them possibly becoming stronger during the lunar eclipse. Erica says she hopes it does, while looking at Kali with baleful eyes. Erica decides to fight, taking on Kali, but she dies from the fight in the process, reaching for Boyd her good friend, whispering his name with her last breath. Isaac later reveals that he found them and also Erica's body when being captured and escaping. After Derek finds Erica's body, he mourns her death and carries it out of the bank. Derek sees the circumstances of her death through Boyd's memories as he absorbs Boyd's powers, which shatters him emotionally.

Cora became friends with Boyd during their imprisonment, but the hecatolite lined in the bank vault refracted the moonlight, refraining the two werewolves from fully transforming during the full moons, causing their rage and bloodlust to build up inside. Three months later, upon being found by Derek and Scott, Cora and Boyd lost all control of their animal sides and escaped into the woods to kill. They were later subdued by Derek, with assistance from Scott, Isaac and Chris Argent. Eventually the sun rises and she and Boyd are rescued and Cora is reunited with her brother joining his Pack. Cora is impulsive, trigger-happy, short tempered, vengeful and tomboyish but she cares for those close to her. Like her older brother Derek, she gives death threats to people; of course, like her older brother, she has no intention of going through with them. In "Currents", when Deaton is kidnapped to be sacrificed by the Darach, Cora helps Scott's friends to find him deducing that Deaton is being held in the same bank she was locked in for three months, but she learns the Alphas have attacked Derek's loft and sabotaged the trap for them. Cora leaves with Stiles and Lydia to help her brother. After Boyd is killed by the Alphas, she breaks down in tears and cradles her close friend's body. Cora tries to avenge his death by killing Aiden, but fails to do so and is knocked out when Aiden strikes her in the head with a weight. She is saved by Scott and Ethan when they restrain Aiden. Her wound from the blow to her head Aiden gave her suddenly doesn't heal, she falls unconscious and is put in the hospital. She was later revealed to have also been poisoned by Jennifer with mistletoe for leverage against Derek. Derek saves her life by giving up his Alpha werewolf status using his pain transference to heal her. In the mid-season 3 finale, Cora helps Lydia and Deaton save the lives of Aiden and Ethan after their defection from the Alpha Pack. She later leaves Beacon Hills with Derek for her former residence in South America.

During Season 3B, Cora goes into hiding at Derek's request, remaining in South America as he undertakes a mission to retrieve their mother Talia's claws from the Calavera hunters and they separate.

Enrolling at Beacon Hills High in Season 3A, they repeatedly antagonize Isaac and Scott. Ethan is gay and begins pursuing Danny Mahealani, while Aiden begins a liaison with Lydia. Ethan and Aiden initially seduced Danny and Lydia respectively to try and get leverage and information on Scott and his allies, but Ethan's feelings for Danny eventually turn genuine. Aiden insists that his feelings for Lydia are fabricated, though they in fact run deeper than he would like to admit. Ethan's relationship with Danny softens the Alpha to the point where he meets Scott halfway in the episode "Currents" explaining he won't harm Danny, as he realizes that Danny isn't part of Scott's group but now knows that Lydia is. When the Alphas have Derek kill Boyd by hand as per Kali's order, Ethan shows guilt for his actions, which Scott catches onto. Having Lydia distract Aiden, Scott and Stiles confront Ethan for conformation concerning whether or not the Darach could have been an emissary to any one of them in "The Girl Who Knew Too Much". Ethan relays their story to them, explaining how they owe Deucalion and lets them know that Morrell, Deucalion's emissary, was the only emissary spared. Ethan betrays the Alpha Pack in the mid-Season 3 finale, "Lunar Ellipse", to help Derek and Cora escape from Kali, enlisting Lydia's help and Aiden is quick to join his brother turning on Kali when she threatens Lydia. Unexpectedly, this confrontation is interrupted by the arrival of Jennifer Blake, whom is the Darach. The twins fight Jennifer in separate one-on-one duels, but ultimately decide to merge into their super-werewolf form when they are overpowered and Kali is killed. Still they prove unsuccessful, when Jennifer snaps their merged form's neck and appear dead. Minutes later, they demerge as individuals, barely alive. Fortunately, Lydia and Cora get them to Deaton, who helps save their lives.

In Season 3B, they've lost their Alpha status and their talent to merge into their super-werewolf form in their feat to survive Jennifer's attack, so they disappear for a couple of weeks, with Ethan breaking up with Danny, though Lydia keeps in contact with Aiden. In "Galvanize", they say they need to join a new Pack as they are now Omegas and enemies will come for them because of their time with Deucalion. They come to ask Scott to join his Pack. Isaac and Stiles are vehemently against this and Scott says no as they don't trust them, particularly because of their part in Boyd's murder. Later, they decide to re-enroll in high school. Aiden continues his affair with Lydia but she eventually states that she helps to save lives, while all she sees is how he helped kill Boyd saying he's a 'bad guy' not just a 'bad boy'. Aiden shows genuine guilt for this. Ethan, meanwhile catches Danny making out with his ex-boyfriend and appears hurt. To make a fresh start and earn Scott's trust the twins help out with threats such as finding the serial killer William Barrow, combating the Oni, where they are both "tagged" by the said demons and helping out with the chaos caused by Stiles under the Nogitsune's possession. In the Season 3B finale, "The Divine Move" after events take a turn for the worse with Alison's death and the Nogitsune takes control of the Oni, the twins consider the idea to run. Derek scolds them and tells them they have to fight for Scott's cause of protecting people instead of fighting for Scott himself if they wish for redemption and become part of his pack. They assist Derek in fighting the Nogitsune and the Oni. After a prolonged altercation, they are saved by Chris Argent, who begins to destroy the Oni with Allison's silver-tipped arrows. Aiden destroys an Oni with a silver arrowhead, only to be fatally stabbed himself. Bleeding heavily and dying, Aiden is held in Derek's arms while Ethan cries over him. Aiden tearfully states that Lydia will have a hard time thinking he became a 'good guy', but Derek reassures he will tell her himself. After passing away, Aiden's death is "felt" by Lydia, which deeply saddens her. With the loss of his brother, Ethan decides to leave Beacon Hills. Danny breaks up with him instead and reveals that he knows Ethan is a werewolf, which shocks the latter. He then gives Ethan a kiss goodbye.

Ethan and Aiden have a talent to sense when the other is in pain and had the power to physically merge their bodies into a single more powerful werewolf form. However, when Jennifer Blake killed their "super-werewolf" form, their feat to survive as individuals cost them their Alpha status and their ability to merge, and their werewolf eye colour changed to blue, as a sign they've taken lives, as Ethan had confirmed the two of them to have killed their original Alpha werewolf in their merged form. Personality-wise, Ethan is calm, reserved, calculating, passive and shows remorse, as while Aiden was impulsive, aggressive, cocky, spontaneous and prone to violence. Both twins have a sense of honor as they followed Deucalion after he helped them fight back against their abusers in their original pack, and they both show guilt for their actions against Scott's circle of allies.

Braden's actions are revealed in the episodes "Chaos Rising", that the bruises she left on Allison and Lydia form the logo for the abandoned Beacon Hills First National Bank where the Alpha pack is holding Boyd and Cora hostage and "Currents", that her words regarding Scott was that he had the potential to be a True Alpha and was intending to warn him about the Alpha Pack and Deucalion's plan for him. Her identity remained unknown until "Alpha Pact" when the Alpha Pack confront Marin Morrell that she sent her in a move against them. Morrell reveals she sent Braeden to rescue Isaac from the Alphas, to ensure balance. In "More Bad Than Good", it is discovered Braeden is actually alive, but scarred on her face and neck from Deucalion's claws. She rescues Derek and Peter from the Calavera werewolf hunters and helps them retrieve the triskele urn in the hunter's possession. She reveals she was hired by Deucalion to save them. While Braeden is shown to be fearless, spontaneous and altruistic, it's explained she is a mercenary for hire, taking dangerous jobs from anyone who can pay her, regardless of her client's intentions or identity, or the moral compunctions of her missions.

Braeden appears in "The Dark Moon" in Season 4, being provided by Araya Calavera as a guide to Scott's Pack during their mission in Mexico to find Derek. She's taken a contract from the Calaveras to find Kate, capture her and return her to them. Scott asks her if she'd kill Kate if paid enough. She replies if paid enough, she'd kill Scott himself. In "Muted", Braeden arrives in Beacon Hills in her US Marshall pose, where Derek hires her to find Kate for him first so he may learn what Kate did to him, causing his werewolf eye color to return to gold. While she accepts, the two develop an attraction to each other. Braeden is found wounded, shot by an assassin, in the Preserve at Lookout Point by Derek where he was trying to track down the Pack led by the Alpha Satomi. He brings her to the hospital where she informs Derek and Melissa that the dead werewolves she found were infected by a virus lethal to supernaturals. She catches Derek watching over her, he claims to be "protecting his investment." Recovering in "Time of Death", Braeden crashes at Derek's loft, continuing their interest in one another. When Derek reveals he's gradually losing his power, Braeden takes Derek under her wing to teach him how to fight supernaturals as a human, beginning with firearms. They wind up sleeping with each other, starting a relationship. In "Perishable", Braeden interrogates the incarcerated Haige after he tried to assassinate Parrish. She learns of the plan to assassinate Scott's Pack at the school bonfire. With her lessons for Derek in hand-to-hand combat and firearms paying off, both are able to fight off the assassins both at the school, saving Scott, Malia and Liam's lives, and at the Argent Arms International warehouse when protecting Satomi's Pack. In the Season 4 finale, Braeden and Derek gear up to hunt down Kate in Mexico after she abducts Scott and Kira. Braeden tells Derek she's not accepting that Derek may not come back alive after he confides in her, sharing a sweet kiss with him. At La Iglesia, Braeden fights off Kate and a Berserker. She is saddened when Derek supposedly dies, though she keeps on fighting. She is elated when he's actually alive from the process of evolving. At the end of Season 4, Derek and Braeden continue their relationship; she relays to him her employment as a US Marshall ended as she'd spent her entire career tracking a single target: The Desert Wolf.

During Season 3B, Rafael begins having Sheriff Stilinski's cases forwarded to him. As many of these are unclosed and unresolved (due to the Sheriff's new found knowledge of the supernatural), and inspecting Stilinski's reopening of the Malia Tate case, he starts to have Stilinski impeached, which would have him fired, much to Scott and Melissa's anger. Stiles coldly lets Rafael know that his attitude towards his father is because of something else rather than his "professional disapproval" of Stilinski, something Rafael doesn't like Stilinski knowing and Stiles says he knows what it is. When Stiles goes missing while sleepwalking in "Riddled", Rafael picks up on a line from Stiles' phone message to Scott and correctly deduces Stiles is sleepwalking, had called Scott while still asleep and is unknowingly at the werecoyote's den. Stilinski puts aside his differences with Rafael when he finds Stiles and brings him to the hospital, shaking his hand. When Stilinski faces the impeachment case in "De-Void", Rafael helps to talk him out of the case, revealing to him the real reason he came was to have an excuse to stay so he could talk to Scott. In "Insatiable", Rafael reveals to Scott why he left. He used to drink heavily back when he and Melissa were still married. One time, Rafael had come home drunk and was holding Scott when Scott was little. He'd got into a fight with Melissa, but he'd caused Scott to fall down the stairs, bruising his head on the floor which led to Melissa screaming at him to get out. Rafael left the family the next day, divorced Melissa and never took another drink again. Rafael later learned Melissa had confided in Stilinski over his drinking over the phone; Stiles had overheard the conversation and Rafael became spiteful toward Stilinski due to his alcoholism when his wife Claudia died. Scott isn't satisfied with his explanation, telling Rafael he used to "get hurt all the time" and that Rafael was never there for him. In "The Divine Move", Rafael talks to Melissa, consider returning to San Francisco. Melissa snaps at him, telling him when she yelled at him to "get out" after the incident, she was telling 'a drunk to get out of the house', not telling a father to get out of his son's life. Rafael helps to save Melissa when the Oni attack the hospital, promising Melissa that he'll do his best to make things up to Scott.

In Season 4, Rafael is staying at the McCall house, to repair things with Melissa and Scott because he's "keeping (his) promises this time." In "Orphaned", Rafael is able to identify the supposed freshmen Garrett and Violet that have been killing supernatural people in Beacon Hills as the assassins, 'the Orphans' from Violet's weapon, the thermal cut wire. Rafael and Stilinski oversee Violet's transport to a federal facility, but the transport is attacked by Kate Argent, though they survive. During the school's quarantine in "Weaponized", Rafael investigates the situation. He enters the school disguised as a CDC worker after receiving a call from Melissa about a cure for the virus which will save Scott and his friends. He comes upon the assassin 'the Chemist' about to execute Stiles. Rafael takes out his gun and kills 'the Chemist' to save Stiles. In "Time of Death", Rafael has to leave for San Francisco to report to his superiors about his shooting the assassin. Scott concernedly asks Rafael has he killed before, he replies two other times and lets his son know it's not easy, taking a life. Scott gives him a hug, but the conversation causes Scott to subconsciously debate should he resort to killing his enemies in order to stop them. Before Rafael departs, he tells Scott he's noticed the strange behavior of Scott and his friends, on how they react to the situations happening in Beacon Hills, he tells Scott he wants a talk with him that he wants "to be in the know" when he returns.

In 1943, Noshiko was living in a "relocation camp" called Camp Oak Creek under Executive Order 9066. Noshiko would subtly improve the lives of the interned Japanese Americans by stealing food and supplies, all the while engaged in a clandestine romance with a field medic, Corporal Rhys. During a devastating outbreak of pneumonia, Noshiko and Rhys discovered that the camp's army medics were selling medical supplies on the black market, resulting in several deaths in the camp. Noshiko hastily told her fellow interns of her discovery, but her actions had unintentionally incited a riot between the officers and the interns. Rhys had attempted to break up the riot but was set aflame by a Molotov cocktail thrown by an intern, Satomi, who Noshiko realized too late was a Bitten werewolf, and he died in agony. Eventually the officers opened fire and dozens of people (including Noshiko) were shot. Apparently dead, but incapacitated and healing, Noshiko learned the entire incident was going to be covered up. She was enraged the army medics were going to get away with mass murder, as well as distraught with Rhys' death. Out of injustice, Noshiko prayed for her ancestors to send a Nogitsune to punish those responsible for the massacre, intending for the Dark Kitsune to possess her, for her pain and misery to imbue him with power. But a Kitsune cannot be controlled, and so being a trickster, the Nogitsune possessed Rhys' corpse instead. He proceeded to slaughter not only the guilty officers, but also the interns at Eichen House when the inhabitants relocated there. Realizing her great mistake, Noshiko eventually cornered the Nogitsune and, with some help from Satomi, slew him. Noshiko had buried the fly from the corpse which embodied the Nogitsune's very being near the Nemeton (then still standing). The Yukimuras had relocated to Beacon Hills because the ritual Allison, Stiles and Scott undertook released the Kitsune from its prison.

Later, Noshiko visits Rhys' grave in the Eichen House's basement in "De-Void". It is revealed she had carved the kanji "self" into the board to signify that Rhys had died as himself, not as a monster when the Nogitsune possessed him. The Nogitsune corners her and he steals her last Kitsune Tail from her. In "Insatiable", Noshiko and the Oni arrive at Camp Oak Creek to slay him. She confronts Kira protesting that she thinks he could be taken alive, saying that she tried to save Rhys seventy years ago, saying Stiles is gone. She admits that while she is indeed no longer the Fox because of the sacrifice of her Tails, her daughter is, but the Nogitsune is still her demon to bury. Unfortunately, the Void Kitsune, takes control of the Oni using her final Tail and he turns the demons against the group and Allison is killed. With the Oni taken from her control, Kira and Stiles are taken to the home of Noshiko and Ken. Kira asks her mom if the Nogitsune could be trapped again. Noshiko replies the Nemeton's power is what trapped the Void kitsune. At the end of Season 3B, the Nogitsune is imprisoned in the triskele urn, and Noshiko feels at rest now that her enemy has been put away.

In Season 4, Noshiko and Ken are making plans to return to New York. Kira objects to these plans not wanting to leave her friends. When Scott resumes his romance with Kira and Kira joins the lacrosse team, Kira sabotages the plans, to Noshiko's annoyance. In "Time of Death", during the Dead Pool situation, Noshiko shows Kira how to use her Thunder Kitsune Foxfire on Scott, to incapacitate him into a vegetative state, temporarily killing him as part of a plan to catch 'the Benefactor'. Noshiko accompanies Melissa during the plan standing watch over at the hospital entrance. When Melissa snaps, asking her why they're letting their supernatural children fight these fights, the Kitsune consoles her saying they'd be telling them to run and hide otherwise. When the Berserkers attack the hospital, Noshiko is injured, and because of her sacrificing her Kitsune Tails, her power is severely depleted and no longer heals like she used to. With Kira accompanying her, Noshiko is forwarded to a hospital in Palo Alto. In "Smoke and Mirrors", Kira hallucinates her mother figuring out how to trigger a Kitsune's healing, using pain from cutting herself using a piece of obsidian. Back in Beacon Hills, Noshiko presents Kira with the obsidian piece shaped into a shuriken. Kira figures out the shuriken represents her first Kitsune Tail with her mother smiling in pride.

During the bomb scare at the school in "Letharia Vulpina", Ken meets with Noshiko discreetly. Ken hands Noshiko her Kitsune Tails, contained in a fake book. He implores his wife to talk with Kira, after what happened at the hospital. In "The Fox and the Wolf", the Nogitsune, inhabiting Stiles' body, enters Ken's classroom, looking for Noshiko's Tails. The Dark kitsune infects Ken with one of its flies to possess him to have him reveal where the Tails are. He is saved by Noshiko using a remedy brought to them by Kira and Scott, to expel the fly. When Noshiko reveals her story concerning the Nogitsune, Ken admits he lied to Isaac and Allison about Camp Oak Creek existing because of the Argent family's history of violence, unsure if he could trust Allison. He tells he'd met Noshiko during his time in grad school when he'd searched for the confirmation of Camp Oak Creek's existence as the camp records were erased during a cover-up. He convinces his wife to share details with Scott, not just with Kira, saying allies should be welcome in times of war. Scott confronts him over his supporting Noshiko's demand that Stiles be killed to destroy the Nogitsune. Ken placates the young Alpha werewolf, saying that Stiles is gone and because of the bloodbath caused by the Nogitsune in 1943, he says sometimes "history does repeat itself" and life can conspire against people. In "Insatiable", when Kira is stressing about recent events and the secrets she's learned, Ken comforts and advises his daughter, saying as a Kitsune, she has a lot to learn, specifically the game of Go in order to combat the Nogitsune, known as Baduk in his native Korea. In the Season 3 finale, when Kira and Stiles take refuge at their home, Kira asks what their move is now that Nogitsune has split from Stiles' body and has taken control of the Oni. Ken says that at this point, to turn the game around against the Dark Kitsune, they need a divine move. After the Nogitsune is put away, Ken and Noshiko correspondingly put away the Go pieces, as 'the game' has been won.

In Season 4, Ken remains on the school staff as the History teacher, but Kira surprisingly learns her parents intend to return to New York and objects, saying he has an important job at the high school. Ken reminds his daughter he was a professor at Columbia University before they moved out west. Ken finds the "For Sale" sign for their residence sliced into pieces, courtesy of Kira to sabotage the moving plans as she and Scott had resumed their romance, and she's also joined the lacrosse team which Ken finds out. In "Weaponized", Ken helps his daughter and the Pack locate a second entrance to the Hale Vault so they can hide when they lose control of their powers during the virus out break. In "Smoke and Mirrors", Ken has Kira's obsidian piece which she used to trigger her healing reshaped as a shuriken as it represents Kira's first Kitsune Tail, similar to how Kaiken blades represented those of his wife.

In "Insatiable" Stilinski tells Parrish he is a comfort to be around and asks why he'd transfer. Parrish responds that he transferred to Beacon Hills because he felt drawn there. This suggests that Parrish is supernatural, because the re-awakening of the Nemeton would draw supernatural entities to Beacon Hills. In the Season 3 finale, Parrish and Stilinski are attacked at the Sheriff's station by the Oni, slashed by their blades, slowly killing them, but are cured when the Oni are destroyed. In Season 4 episode "Muted", Parrish investigates the Walcott family murder where he comes across Lydia, who's drawn to the site because of her banshee ability. Parrish lets her know of her reputation of being present at scenes where dead bodies turn up. He unwittingly asks her if she's psychic. Lydia scoffs at Parrish asking if he believes in things like that. Parrish replies he prefers to not believe in anything, but he keeps an open mind. In "The Benefactor" Parrish, using his military background, helps Stilinski and Derek in analyzing the Mute's motorized keypad, uncovering the fact that the Mute is an assassin and disarming the claymore mine planted at the school. In "I.E.D." Parrish brings Meredith to the sheriff's station and later helps her recite numbers which are a clue to the second third of the Dead Pool. Lydia later sees his name on the list, along a bounty of $5m. She and Stiles show him the Dead Pool in "Orphaned". He asks them why would he be on the list which they deflect for the time being. In "Perishable", an assassination is attempted on Parrish. The culprit is his fellow deputy Haige. Haige soaks Parrish in gasoline and sets him on fire. His car and clothes burn, but his confirmed supernatural status manifests: he survives, totally unharmed with no residual burns at all. Parrish walks into the sheriff's station, and brutally attacks Haige, beating his would-be killer to a pulp. After the entire ordeal, he is brought to Derek's loft by Lydia and meets with Scott, Derek and Lydia. The three subsequently let Parrish in on the supernatural circle. He comes to grips with what they tell him, though they can't identify what species he is.

Newly enlightened on the Dead Pool situation, Parrish helps Lydia and Stiles with the list of names Lorraine Martin left Lydia. They were all supposedly suicides committed at Eichen House, but Parrish later notices each suicide was reported by the same person: the head orderly, Brunski. Parrish arrives at the institution just in time to save Lydia from being killed by Brunski, shooting him dead. Parrish, tracking Peter Hale in "A Promise to the Dead", arrives in the sewers and attempts to free Chris Argent from being pegged to the wall. Parrish tells Chris he needs adrenaline, and he can get it using anger or fear, and entices the older man to use anger over Allison's death to give whatever he has left, and while pulling the rebar again, Parrish's supernatural status inconspicuously triggers again, his eyes glowing a fiery orange. In "Smoke and Mirrors", Parrish accompanies Chris to Mexico to rescue the Pack from Kate. At the conclusion of Season 4, Lydia gives Parrish a copy of the bestiary and offers him her help to find out what his supernatural status is.

In Season 4, Lydia and Malia decide they need help from Meredith in "I.E.D." to decode the other two thirds of the Dead Pool. Meredith heads to the high school, but is brought to the sheriff's station by Parrish, saying she's looking for Lydia. Lydia and Malia arrive and they ask her about what she knows. Meredith is cryptic and aloof as always saying Lydia 'called her'. Parrish offers input that perhaps what she needs to tell Lydia may be a number to call. Meredith affirms this reciting the number 2-4-3-6. Lydia says a phone number is ten digits, but Meredith repeatedly insists that's the number. Malia and Lydia later figure out the number sequence spells out AIDEN on a telephone pad, cracking the second third . In "Orphaned", Lydia and Stiles pay Meredith a visit at Eichen House where they implore her to reveal the final cipher key. Meredith is shaking in fear saying things have changed, though she telling Lydia she wanted to help. Lydia asks Meredith why not help now. Meredith says 'the Benefactor' doesn't want her to tell them. They ask Meredith for his name, but eventually she lets out a banshee scream giving Lydia a bleeding ear. When Lydia decodes the final third of the Dead Pool, she sees Meredith's name and Lydia immediately has Parrish check on her. Unfortunately, Meredith had apparently committed suicide by hanging herself out of fear for her life. Her corpse is found by Brunski and Lydia and Stiles mourn her death. In "Weaponized", Lydia claims a box of Meredith's possessions and finds a photo of Meredith standing in the study of the Martins' lakehouse. Lydia learns about the history of her grandmother Lorraine Martin and that Meredith was one of her subjects brought in for her study of parapsychology; Meredith had put on headphones for a test. Her ears bled out causing her to be hospitalized for a year.

In "Perishable", after Brunski dies from being shot by Parrish to save Stiles and Lydia at Eichen House, Meredith reveals herself to be alive, she had been using Brunski because she knew of his being a serial killer, and says, "(Brunski) wasn't on (her) list.": Meredith is revealed to have been 'the Benefactor' all along. She's brought to the sheriff's station. Lydia implores Meredith why would she launch the Dead Pool. Meredith tells Lydia she only wanted "to help" and also wishes to only talk to Peter Hale. When Peter arrives, he repeatedly tells Meredith they have never met. Meredith says he doesn't remember her. Peter reacts to this, initiating a mind meld. Through Meredith's memories, it is revealed during her hospitalization from Lorraine's research, she was placed next to Peter when he was comatose from the Hale Fire for months. The whole time, Meredith could hear Peter's thoughts telepathically: Peter was ranting in response to his trauma from the fire, raving over how he'd predicted the Argents would target his family. Meredith was terrorized by Peter's cognizant revenge-fueled thoughts that he would remake the supernatural of Beacon Hills in his image instead of his sister Talia's. To do this, Peter had said first he'd hire assassins to purge Beacon Hills of supernatural people, placing them all on a hit list, "The Dead Pool". Peter was originally the one who planned the Dead Pool, though he didn't remember; Meredith, using Lorraine's computer code to comprise the Dead Pool, put the list online. Lydia talked with Meredith afterward, the latter justifying Peter's 'plan' in that the supernatural are monsters, even them the banshees. She believed too many people have died because of them, and that she decided "to help": she enacted the plan in response to her 'hearing' Lydia Scream as Allison died. Lydia tells Meredith "not all monsters do monstrous things", like Scott. Meredith touches Lydia's face and realizes, also like Lydia herself. The vulnerable, brainwashed banshee sheds a tear, showing remorse, lamenting "What have I done?"

In "Orphaned", it is revealed that over the years Satomi had become an Alpha of a Pack: werewolves targeted by assassins in Beacon Hills, DeMarco Montana, Carrie Hudson and Brett Talbot were all Betas of this Pack. Satomi had risen to her status by adhering to the percepts of Buddhism; several of her Pack members utilized the mantra "Three things that cannot be long hidden. The sun, the moon, the truth" as an anchor for their animal nature. Derek and Malia track down Satomi's Pack to warn them of the Dead Pool, but they find multiple members of the Pack slaughtered. Satomi appears in "Weaponized" arriving at Deaton's animal clinic with Reed, a Pack member of hers who was sick from what killed the others, eventually dying, to Satomi's sorrow. Satomi's Pack were all infected with a virus, a variant of Canine distemper designed for werewolves. Satomi meets Derek, realizing how much he reminds her of Talia. Satomi knew Talia, she'd occasionally visited her before the fire. Derek tells her he remembers because of the tea they drank during such occasions which he found smelled awful. Deaton figures out Satomi wasn't infected with the virus because she has been inoculated from the tea recipe, from Reishi mushrooms, a powerful anecdotal. An assassin shows up and opens fire on Derek and Satomi, but Satomi dodges the bullets and kills the assassin. In "Monstrous", hunters-turned-assassins have swarmed into the area, and Satomi's Pack now totals only eight members, herself included. She and her Pack regroup at the Animal Clinic after Kira saves Brett and Lori, the youngest Betas from the hunters. Kira introduces Satomi to Scott. They bring the Pack to the abandoned Argent Arms International warehouse and rally Chris, Braeden and Derek. Satomi is wary of Chris at first, but Scott tells Satomi he trusts Chris. Chris remembers Satomi from a meeting in the past, he asks her what her mantra means to her. She responds it means 'the truth' that werewolves are inherently violent creatures cannot be denied in reflection of her loss of control that lead to Rhys' death seventy years previously. The assassins arrive, and the group is able to fight them off, until the Dead Pool to be shut down, terminating all the Benefactor's contracts with no casualties.

Satomi is well known amongst werewolf Packs because she is one of the oldest wolves alive; she is physically identical to how she appeared back in 1943 indicating a trait of long life. Satomi is a wise, progressive leader and guardian of her Pack, having taught her members control as well as talents to avoid detection. She is a philosophical and disciplined individual having mastered her inherent rage as a Bitten werewolf, but willing to kill if it means self-defense or protecting her Pack from harm. Satomi has immense supernatural agility, able to evade gunfire at point-blank rage and wields an emei blade as a weapon.

In the Season 4 premiere, "The Dark Moon", Scott and his Pack infiltrate Araya's home under the belief she and her men had taken Derek, however, the hunters manage to outmaneuver them and take them hostage, revealing they don't have Derek. Araya has Scott and Lydia wired for torture by electricity. She has Kira turn the dial on Scott by threatening to electrocute Lydia as a test for what kind of Alpha Scott is. During the torture, Araya viciously claims Scott already knows who could have Derek, someone who was a shapeshifter, but not turned by a Bite, who had a vendetta against him. Scott figures out that Kate is whom Araya is referring to. Araya spitefully tells Scott he wouldn't have believed her if she'd just told him. Araya has been hunting Kate ever since Kate broke the Hunter's Code by refusing to commit suicide upon her transformation. Having confirmed Scott is a True Alpha by Scott overcoming the electricity by sheer determination, Araya intends to use Scott and his friends to find Kate for her as the men she's sent have wound up dead. Araya releases Scott's Pack with a veiled threat, if Scott Bites an innocent, she'll come knocking at his door. In "I.E.D.", Araya and Severo arrive in Beacon Hills to enlist Chris in hunting Kate. Chris and Severo hold each other at gunpoint, at which she amusedly calls as "a standoff". Araya recites the Hunter's Code and plays on Chris' grief over Victoria and Allison's deaths family to have him change his ways and return to be a hunter. In "Smoke and Mirrors", Araya and her hunters arrive at La Iglesia and face off against Kate and her Berserker. After Kate kills one of her men, Kate tells Araya she's next. Araya faces the werejaguar, telling "La-Loba" she'll see how the Calaveras die. Instead, Araya watches on as Kate is defeated, severely mauled by Derek in a full-wolf-shapeshift. When Kate escapes, Araya continues her hunt of Kate with Chris in tow as he agreed to, but on the condition she has to leave Scott and his Pack be.

Araya is most often portrayed as easily amused with a wide smile on her face, while simultaneously displaying her ruthlessness, sadism and cruelty towards supernatural people particularly werewolves, typical of a hunter, or hunters who violate the Code, even people who cross her as she murdered one of her own men for "robbing" her. While zealous and amoral as a hunter, Araya is ultimately fair as she follows the Hunter's Code not to kill supernaturals unless there's proof they've harmed innocents. Her base of operations is a music/dance club as she has an adoration for "the music of youth".

In "I.E.D.", Mason tries to calm Liam down when he lets Liam know the pre-season scrimmage is against his old school, Devonfort Prep and when Liam later confronts his rival, Brett Talbot. At the game, Mason tells Liam he can totally take Brett on, while at the same time being in denial that he thinks Brett is hot, but they both laugh it off. In "Perishable", Mason shows concern over Liam's strange behavior when he's traumatized from fighting a Berserker and his stress because of the Dead Pool situation. At the annual lacrosse bonfire, he tells Liam not only does he want Liam to tell him what's going on with him, he wants to help him. When Liam, Malia and Scott are disabled, Scott tells Mason their well-being is not the drinks, it is because of the music. A team of assassins had wired a sonic weapon into the music, that was weakening the three shapeshifters because of their sense of hearing. When Mason sees the three being taken away by the assassins, posing as security guards, Mason seemingly concerned about them, pulls the plug to the DJ's booth, shutting off the music. This action unknowingly saves Scott, Liam and Malia from being burned to death. Mason, though thoroughly confused by what's going on with Liam, he nevertheless tries to convince Liam to talk to him whenever he's ready to talk in the penultimate episode of Season 4, "A Promise to the Dead".

In "Shape-Shifted", Gerard goes undercover as the principal at Beacon Hills High. When Gerard finds out that Scott is a werewolf in "Abomination", he blackmails Scott into following his orders by threatening to kill Scott's mother. Scott complies supplying him with information and becoming a member in Derek's Pack. Gerard heartlessly endorses that Victoria must kill herself after Derek Bites her and uses her death to emotionally manipulate Allison into joining him. In "Fury", Gerard kills Matt Daehler and becomes the Kanima's new Master. He then steps up as the main threat, threatening Melissa McCall's life again, and abducting and beating Stiles as a message to Scott. In the Season 2 finale, during the showdown at the industrial warehouse between Scott, Derek, Isaac, Chris, Allison, and Jackson as the Kanima, Gerard surprisingly has the Kanima hold Allison hostage. It comes out that Gerard he has cancer; all his scheming and his genocidal campaign of werewolves was all a ruse for to push Derek into a position to Bite him, become a werewolf, kill Derek to become an Alpha, and ultimately cure himself. He has the Kanima threaten to kill Allison unless Scott has Derek Bite him. Chris is incensed at his father's betrayal calling him a monster, that he pushed for Victoria's suicide all while what he was planning to do and threatening his daughter's life. Gerard fires back at Chris he'd kill his son if it meant survival. Scott follows his orders. However, because of a plan by Scott, he and Deaton had replaced Gerard's cancer medication with mountain ash filled capsules: his body violently rejects the Bite, black blood eschewing out of his ears, eyes, nose and mouth and he is incapacitated, but he disappears.

During Season 3, Gerard is shown to be alive, in hiding and living at a medical institution. His cancer is now vanished, but is confined to a wheelchair and still suffering the effects of the rejected Bite from the second season, black liquid still pouring out of his orifices. He reveals to Chris that one of their family members in 1977, Alexander Argent, his brother, was bitten by the Alpha werewolf, Deucalion. In "Visionary", Allison and Scott come to him for information about Deucalion's Alpha pack in exchange for Scott siphoning away some of his pain. Gerard lies to them about Deucalion ambushing him and killing his men when they met with Deucalion's pack during Deucalion's proposed peace offering, when it was actually Gerard himself who ambushed all involved parties, killing Deucalion's Pack members and killing his own men because they wanted peace with the Packs (which Scott catches onto). He'd also stabbed Deucalion in the eyes with two arrows which caused Deucalion's blindness. However, he truthfully told them that while Deucalion is blind, he can actually see in his werewolf form. Scott threatens Gerard; if he finds out that the story he told them about how Deucalion truly lost his eyesight was a lie, or his lies get innocent people hurt, he will return to "take away more than (Gerard's) pain". It is because of Gerard's treachery, that Deucalion's Alpha Pack was formed, and Deucalion is the sociopath he is in the present.

With the help of Deaton, Deucalion's eyes healed physically, but his sight didn't return. This discovery coupled with Gerard's betrayal enraged Deucalion. Marco, another of his Betas, took this opportunity to try and kill Deucalion to become the Alpha werewolf of their pack. Deucalion, however, realized he could see using his werewolf eyes and killed Marco in retaliation. In doing so he realized Alphas became stronger when they kill their own Betas. The entire experience corrupted Deucalion. Eventually he killed the rest of his pack to add all of their powers to his own and lead fellow Alphas Kali and Ennis to do the same. Sometime after, he came across the twins (Aiden and Ethan) who were "the bitches" in a brutal Pack. Deucalion taught them how to control their merged form to fight back against their abusers and they joined him after killing their original Alpha. He pulled all five of them together to form an Alpha pack. He even had all the members kill their Emissaries, except for Marin, his own. Deucalion eventually came to be known as 'the Demon Wolf'.

Deucalion's Alpha Pack arrived in Beacon Hills in the Season 2 finale, capturing Boyd and Erica in the process. In "Unleashed", Deucalion goes to Derek's loft along with Kali and Ennis to offer Derek a proposition for Derek to kill his own Pack to join his own with the intention of recruiting him. Deucalion's actual plan for Derek was to place him against Scott. To this end, after the battle between the Packs in "Frayed", Deucalion kills Ennis after he fails to heal himself, absorbing Ennis' power; he lies to Kali and the twins that Ennis died of his wounds, intending to have a vengeful, distraught Kali force Derek's decision to join the Alpha Pack. In "Currents", the reason for this is because Deucalion knows that Scott has the potential to become a True Alpha and wants to recruit Scott, not Derek. Deucalion's true intentions throughout Season 3 were to push Scott into a position to either join the Alpha Pack or have Scott kill somebody destroying his True Alpha potential eliminating Scott as a potential threat to him, and also having Ethan and Aiden enroll in high school to seduce people close to Scott for leverage. When the new killer committing human sacrifices is revealed to be a Darach, Deucalion had his pack hunt it down. He targets the Darach because it used to be a druid who can call upon powers from sacrifices. After finding out that the Darach is Jennifer, Kali's old emissary, the Alpha Pack leader tried to have her killed. Scott later tearfully joins Deucalion's pack in "The Overlooked" in return for Deucalion's offer to help look for his kidnapped mother. In "Alpha Pact", he tries to have Marin killed when he suspects her to have had a role with the human sacrifices and she confirms to have had been working against him to "maintain balance", but Scott ultimately saves her. In "Lunar Ellipse", Deucalion and Scott face off against Jennifer and Derek (who Jennifer forced into helping him). Deucalion shifts into his Demon Wolf persona and overpowers both of them easily. He then tries to force Scott into killing Jennifer to become an Alpha, but Scott blinds him using flash bolts as he can see as a wolf. During the lunar eclipse, Deucalion temporarily loses his powers and Jennifer is to be able to defeat him. After being beaten to a pulp, Jennifer is tricked by Derek into healing Deucalion's normal eyesight to allow him to see her face and the result of his crimes on her but Jennifer is weakened because of this. After the lunar eclipse passes, Deucalion is in awe as Scott awakens his True Alpha abilities, breaking through Jennifer's mountain ash barrier. Deucalion saves Scott from becoming a killer by mortally wounding Jennifer, slashing her throat, subsequently stopping her from sacrificing the kidnapped parents. Derek and Scott decide to let Deucalion go, hoping he can be the man he once was before on the condition he tries to maintain peace between werewolves and humans.

In the episode, "More Bad than Good", it is revealed Deucalion had hired the mercenary Braeden to rescue Derek from the Calavera werewolf hunters. His current whereabouts are unknown.

Originally, Deucalion was described as a "man of vision" in the past, a level-headed, reasonable person as an Alpha, the leader of his Pack with a belief and faith in humanity. He was changed by Gerard Argent's treachery, the loss of his sight and his subsuming the powers of his Pack by killing them all. Nowadays, Deucalion is sociopathic, obsessive, vain, charismatic, power-hungry, willing to kill anyone who gets in his way, and not above killing members of his Alpha Pack (which he does to Ennis), if they are useless to him. It remains to be seen if he will redeem himself, as Scott and Derek gave him a second chance. Deucalion possesses abilities far greater than that of an average Alpha werewolf, that he is able to command a Pack of exceptionally strong Alphas with both fear and respect. Unlike most werewolves, in his transformed state his skin turns dark blue/grey and his facial structure changes making his appearance more demonic than wolf-like. His strength and speed are so immense that he easily bested both Jennifer, powered by the Nemeton, and Derek without any damage and appeared as a blur during his movements. Deucalion has the special ability to mask his scent as Scott couldn't identify him as a werewolf when he first encountered Scott. He also has the ability to force other werewolves to shift with a powerful roar.

In the episode "The Girl Who Knew Too Much", Jennifer is taking a class and sees Lydia drawing a tree. Later, she organizes the recital to honor the dead. Sheriff Stilinski simultaneously uncovers an old case about a patient who was brought to Beacon Hills Memorial years ago, but birds, similarly to the events in "Tattoo" died that day with Stilinski realizing the birds were sacrificing themselves for the girl - who he figures out to actually be Jennifer. She is realized to be the Darach, the corrupted druid responsible for the mass sacrifices in Beacon Hills and tries to kill Lydia and kidnaps Stilinski. Using mistletoe Scott and Stiles prove to Derek she is the Darach in the episode "The Overlooked", by exposing her true form. Derek angrily attacks her, but she reveals she's poisoned his sister Cora with the same plant and only she can heal her. As the Alpha pack try to kill her, she shows her intense hatred for them. She reveals to Derek her first name was Julia Baccari and she was Kali's Emissary. She and Kali were close, but Kali had attempted to kill her, as part of killing her entire Pack in order to join the Alpha pack. She was able to survive because Kali couldn't bring herself to deliver the killing blow. Julia then struggled to the Nemeton, which hadn't had power for a long time. But the sacrifice of a virgin months earlier had given the tree stump a spark of power again, which gave Julia the ability to survive just long enough until help arrived. Eventually, because Kali's attack had left Julia hideously disfigured, she used her talents to disguise herself with a new identity, 'Jennifer Blake'. She informs him of her plan to destroy Deucalion's Alpha Pack on the next full moon which is also a lunar eclipse because werewolves lose all their power during the eclipse. Derek affirms this. She also tells him the virgin sacrificed at the Nemeton that reignited its power was Paige Krasikeva, his first love when Derek mercy-killed her, explaining her felt connection towards him. In "Alpha Pact", Jennifer holds Stiles' father, along with Scott's mother and Allison's father for the final sacrifice, Guardians, as they are all Guardians of their children. The behavior of the animals throughout the season is later discovered to have been caused by Jennifer in response to her and her mass sacrifices. She is also discovered to be aligned with the telluric currents as she committed her sacrifices in line with them. She's holding the captive parents at the Nemeton, the same tree in Lydia's been consistently drawing which is why Jennifer tried to kill her.

In "Lunar Ellipse", Jennifer appears at Derek's loft, breaking through the glass roof and takes on the Alpha Pack. She overpowers Kali and the twins. She angrily faces Kali, asking her what it takes for to look normal to spite Kali as she'd physically ruined her actual face. Jennifer demonstrates her power using telekinesis to have the glass shards rise and suspend. Kali stubbornly rages at her former friend and Jennifer ferociously rockets the glass shards into Kali's body, killing her former Alpha. The twins then take her on in their merged form but she snaps their neck inducing them into a coma. She uses Lydia to lure Derek back to his loft. She promises Derek the kidnapped parents if he will be her "Guardian", even after he informs her he's no longer an Alpha werewolf. Jennifer begins sacrificing the parents using the storm to bury them alive with her connection to the telluric currents. At the abandoned distillery outside of Beacon Hills, they face off against Deucalion who has Scott with him. Deucalion easily overpowers both of them, but, to buy more time, Scott blinds the "Demon Wolf" long enough for the lunar eclipse to arrive and the werewolves are rendered powerless. Jennifer assumes her true form and thrashes Deucalion. Derek convinces her to heal his blindness so he can see the results of his actions on her with the intent of him repenting her. However, this leaves Jennifer weakened as Derek had intended. Enraged, Jennifer repeatedly assaults Derek, but he endures her attacks just long enough for the lunar eclipse to pass. The lunar eclipse passes, but Jennifer protects herself with a mountain ash barrier, now fully intent on sacrificing the parents. To save them, Scott determinedly pushes through her barrier and eventually breaks it becoming a True Alpha. Scott says he'll kill her himself if she doesn't stop the storm, but Deucalion does it mortally wounding her. Jennifer survived Deucalion's slash to the throat, and was hoping the Nemeton would restore her health once more - only to be stopped by Peter Hale. After revealing she knows all about his plan (killing Scott to steal his new Alpha status), he slashes her throat himself, killing her for real. In an interview with Jeff Davis, it has been hinted that she may return in a later season.

Jennifer was highly intelligent, specializing in literature and mythology, as expected of a druid Emissary. She had an intense hatred for Deucalion's Alpha pack, specifically Kali as she was friends with her and Kali tried to kill her and she stopped at nothing to get revenge on them, to the point of sacrificing innocent people. As the Darach, Jennifer was amongst the most powerful beings seen in the series because of her mass druid sacrifices. By massacring Warriors, she gained enhanced strength, Healers for healing abilities so great she healed Deucalion's blindness, Philosophers for intelligence and strategy, and Virgins, supposedly to seduce people easily for her agenda as with Derek. She could use telekinesis, a form of mind control to have a pianist killed by a split random cord off the piano to slit her throat for her final Philosopher sacrifice, she could appear somewhere else partially or teleport completely as seen when Lydia saw her materialize in a blaze in "Motel California" and when she abducted victims. Overall, her most impressive talent was the ability to glamor herself to disguise herself and hide in plain sight so efficiently she settled into her "Jennifer Blake" persona for the majority of the time fooling many people she was a harmless, innocent woman.

The Nogitsune first appears to Stiles in a mental apparition in "Riddled". Stiles is sleepwalking, but in reality Stiles does not know he is actually still asleep. Stiles sees himself in a basement with the kanji "己" carved on a wall. The Nogitsune appears as a bandaged humanoid wearing an over-worn leather bomb jacket. The Void kitsune haunts Stiles referring to himself (along with Stiles) as "we". The Nogitsune riddles Stiles with the question, "Everyone has it, but no one can lose it. What is it?" Stiles eventually wakes up and the Nogitsune, inhabiting his mind, vanishes. When Stiles loses consciousness during his MRI test for frontotemporal dementia, the same disease that killed his mother, the Nogitsune appears again in Stiles' mental visions. Stiles solves the riddle: a shadow. The Nogitsune removes the bandages from his body revealing Stiles' face: the Void kitsune has taken on Stiles' form as his 'shadow'. He instantly takes control of Stiles' body. The Void Kitsune causes utter chaos, arranging for traps, attacks to happen which kill multiple innocents including a sabotaged electrical cable at Beacon Hills Memorial hospital, which induces Isaac into a coma, a bomb scare at the high school but the real bomb going off at the Sheriff's department. The Nogitsune employed absolute trickery, taunting Stiles' loved ones as his MRI test results displaying positive signs of the disease were fake, he was a master at Machiavellian schemes, at one point tricking Scott into thinking Stiles had broken free of his possession, enlisting Scott to siphon away the victim's pain from the very traps he'd set so he could absorb all the collected pain from Scott's body to grow stronger and maneuvering Stiles' friends to use as bodyguards from the Oni.

In the episode, "The Fox and the Wolf", it is revealed Noshiko Yukimura had summoned the Nogitsune in the first place back in 1943. Noshiko had wanted him to possess her to seek vengeance upon the corrupt army medics that had caused a manslaughter at Camp Oak Creek, by selling medical supplies for her fellow interns on the black market and the death of her lover Corporal Rhys. She wanted her pain and tragic experience to imbue the Void kitsune spirit with power. Only the trickster, once it was unleashed from Noshiko's prayers to her ancestors, he instead possessed the bandaged corpse of Rhys because a Kitsune cannot be controlled. The Nogitsune had unleashed his horror causing a bloodbath at the Eichen House institution where the interns had been relocated which Noshiko had never intended to happen. She eventually cornered him and with some help from her werewolf friend, Satomi, slew the Nogitsune. The Void Kitsune's very essence, embodied in the form of a fly, left Rhys' corpse, was captured by Noshiko and buried beneath the magical tree, the Nemeton, just outside of Beacon Hills. He laid there dormant for the next seventy years, but the sacrifice undertaken by Stiles, Scott and Allison had released him from his prison. The Nogitsune corners Noshiko Yukimura in the basement of Eichen House in "De-Void" where he steals Noshiko's last Kitsune Tail from her, her last remaining Kaiken and cuts open Stiles' stomach which releases a stream of flies from Stiles' body. These flies infect and possess Derek, Isaac and the twins causing them to go feral, endangering their lives and others. The Void kitsune is eventually subdued with Deaton drugging Stiles' body with Kanima venom. As assessed by Peter Hale, Stiles is in a battle for control of his mind; the Nogitsune has maintained his grip on Stiles body by playing an endless game of Go with Stiles as Rhys' corpse atop the Nemeton within Stiles' subconscious. Scott uses an Alpha's ability to meld Stiles' mind with his and Lydia's to free Stiles from the Dark influence. Scott uses an Alpha's roar while present in Stiles' head and Stiles tips over the Go board and breaks free of the Nogitsune. This process splits Stiles from the Nogitsune, Stiles is free and the infected werewolves are cured of their possession. But the Void Kitsune now exists in real time as a copy of Stiles' shape and takes Lydia hostage.

The Nogitsune holds Lydia at the abandoned Camp Oak Creek. He taunts her telling her that Stiles is dying and he is growing stronger. Lydia senses the Void Kitsune's impending death at the hands of the Oni, but he had kidnapped Lydia just for the very purpose of knowing in advance when the Oni would be close enough to him. When the demons appear, he takes Noshiko's last Tail and snaps it with the Oni so close to him that the control of the Oni is transferred from Noshiko to him. The Nogitsune then unleashes the Oni upon the group, though he and his new minions retreat after one Oni is destroyed and another succeeds in killing Allison. In the Season 3 finale episode "The Divine Move", the Nogitsune, with the Oni still under his control, enters the final stages of his plan of destruction by unleashing the demons all over Beacon Hills; with each person dying as a result of being cut by their blades. Led by Scott, the entire group make one last stand against the Void kitsune and his forces, intent on trapping him within the triskele urn that contained Talia Hale's claws, as its wood was made from the Nemeton, the very power that kept him trapped before. When Scott, Kira, Stiles, and Lydia face off against the Nogitsune at the school, the Dark Kitsune informs them that the only way to stop the chaos is for Scott to kill Stiles (comparing the young Alpha and his best friend respectively to a kaishakunin and a samurai) in a Seppuku ritual. When Stiles feels he has no other choice, he grabs Kira's dropped katana and starts to kill himself to end the strife, but then figures out that everything that is happening around him and his friends is an illusion, which they break. The Nogitsune, angered that his "game" has been ruined by the destruction of the Oni and by Stiles' divine move, attempts to kill his host. He advances on Stiles and Lydia raging, "I'm a 1000 years old! You can't kill me!" Stiles and Lydia tell the Kitsune they can change him instead by changing the body of his host's copy. Stiles tells his foe he "can't be a Fox and a Wolf" moments before Scott Bites him, turning him and Kira stabs him with her sword. The Nogitsune loses his power, his Stiles shape which collapses and dissipates like dry clay, reverts to the form of a fly, and Isaac seals him in the triskele urn, putting an end to his threat.

In the episode "The Overlooked", when the Alpha pack began hunting the Darach which is actually Jennifer, it's revealed she is really Julia Baccari, Kali's former Emissary. When Deucalion confronted her, Kali admitted she'd attempted to kill Julia, as part of killing her entire Pack in order to join the Alpha Pack, but she'd loved Julia and was unable to do it in the end and left her to die. Kali felt genuine remorse for this. The Alphas attempted to kill Jennifer, but were foiled by Scott and his allies. In the mid-season finale, she and Aiden show up at Derek's loft to kill Derek, only to have their plans foiled by Ethan - who betrayed them. Kali demands to know where Derek is. Aiden is quick to join his brother after she threatens Lydia. Kali confronts Aiden over his loyalties when he becomes violent in his supposed defection. However, this turn of events is interrupted by Jennifer, who breaks into the loft through the glass roof. Kali takes her on, but is overpowered. Jennifer confronts Kali about her new glamored form, asking her what it takes to be able to look normal to spite Kali as the malicious Alpha had ruined her real face when she'd attempted to kill her. Kali fires back saying she doesn't care, but Jennifer darkly responds saying "it takes power. Power like this", and uses telekinesis to levitate shards of the broken glass off the floor. Kali shows fear at this display, but ultimately refused to back down in arrogance and screams she "should've ripped (Julia's) head off", and Jennifer fires the glass shards into Kali's body, violently killing her.

In 2006, 9-year-old Matt had gone to Isaac Lahey's house to trade superhero comic books with him. The swim team of Beacon Hills High at that time was having a pool party at the house and drinking alcohol to celebrate their winning the state championship. Matt was thrown into the pool by Camden, Isaac's older brother, despite yelling that he can't swim, resulting in him almost drowning. He was resuscitated by Coach Lahey who berates him about not knowing how to swim and demands he tell no one what happened. Matt obliged keeping the incident secret, causing himself trauma and having irregular nightmares where he's drowning.

Back during the Argents' funeral, when he was photographing Allison, Lahey had got in one of his shots. Matt'd felt an unbelievable rage for his near-drowning years earlier and wished that Lahey was dead. The following morning he found out Lahey was dead. In "Shape-Shifted" he'd spied on Jackson using his camera and witnessed his transformation into the Kanima. He and the Kanima touched hands seemingly by instinct. Through a supernatural bond that formed between the two of them he saw that Jackson had killed Lahey for him and Matt became Master of the Kanima. He used the Kanima to murder all members of the swim team who were involved in the incident, except for Jessica Bartlet whom he killed directly.

In "Fury", at the Sheriff's station, Matt has Jackson murder all the deputies on night shift, destroys all the evidence linking him to the murders and takes Scott, Stiles, Derek, Stilinski and Melissa hostage. He reveals he knows all about the supernatural events occurring and demands Scott hand over the bestiary. He needed answers as to why he was beginning to transform into the Kanima, but Derek silently realized Matt had broken the rules of the Kanima. The Master is to use the Kanima to kill murderers, while Matt had him kill innocent people and he had killed people himself. The hunters attack the building and in the struggle between the Argents, Jackson, and Scott and Derek, Matt escapes but Gerard kills him by drowning him, using this opportunity to become the Kanima's new Master.

As a result of his childhood trauma, Matt became a teenage killer, psychologically unstable, dangerous. He irrationally called Lahey and the swim team murderers saying they 'murdered' him. He was also a stalker, relentlessly pursuing Allison by taking photos of her and photo shopping himself into these pictures depicting they were in a relationship. As Master of the Kanima, Matt gained abilities to control the Kanima through a supernatural bond. He could communicate with Jackson telepathically, control him also as a human, sense him from a distance and even speak through him. The bond between Master and Kanima was affected akin to Matt's personality; Jackson, as the Kanima would share his fear of water, and his affinity for photography: to target a victim, Matt just had to take their picture or think about killing them, then Jackson would kill them.

In the following episode "Illuminated", after Isaac describes his attackers, Chris Argent reveals he has a broken mask of the same variety they wear. They show up at Derek's loft where Danny Mahealani is hosting a black light party. It is revealed they had tagged Isaac on the left side of his head with an unusual marking (己) when he was attacked the night before. They attack and tag all the supernatural beings of the gang, the werewolves and Lydia. Afterward, they fight and overpower Derek and Scott. The sun suddenly rises and they dematerialize. In "Silverfinger", Chris Argent relays a story when he was 18 where three Oni had appeared during Chris' first gun deal with Yakuza and went after the Yakuza boss. The Yakuza entourage opened fire on them to no use, they slaughtered all the men in their way and slayed the boss which was a supernatural. Chris had shot off the mask of one of them saving the life of a Yakuza mobster nicknamed Silverfinger. Chris, Allison and Isaac learn from Silverfinger that the Oni seek to hunt down and kill the dark type of the kitsune, known as 'Void' or a Nogitsune. The mark they leave on people they have tagged is the Japanese kanji for "self", indicating that tagged person is not possessed by a Nogitsune and is still themselves. The Oni inspect Scott and Kira and determine they are not possessed. At Beacon Hills Memorial, the Oni come upon the Nogitsune, which is possessing Stiles Stilinski. When the Oni try to test Stiles, the Nogitsune seems to be able to withstand the Oni's power and destroys three of the five Oni, the fireflies used to form them disintegrating into smoke.

In "Riddled", it is revealed that the kitsune Noshiko Yukimura was the one who summoned the Oni to kill the Nogitsune. Noshiko has the ability to lead the Oni as seen when she calls the two remaining Oni to her side when facing off against the Nogitsune. Noshiko can summon the Oni by sacrificing her Kitsune Tails, physically manifested as blades or kaiken. The older the Tail that's sacrificed, the more powerful the respective Oni is. In "Insatiable", after the Nogitsune gets expelled from Stiles' body, Noshiko leads the Oni to Eichen House to finally destroy the Dark kitsune. The Oni prepare to destroy the Nogitsune, but the dark trickster breaks the last of Noshiko's Tails and takes control of the Oni. The Nogitsune turns the Oni against Allison, Isaac, and Kira and Noshiko Yukimura. Isaac is badly injured and almost killed in the fight but, as an Oni is about to deliver the final blow, Allison shoots an arrow into its chest, causing it to release a yellow light before violently dissolving into smoke killing the demon. Another Oni kills Allison by stabbing her through the abdomen. In the Season 3 finale, the Nogitsune has the Oni attack the hospital, the Sheriff's station and the Animal clinic. After cutting down numerous innocents in their way, the demons wound Mellisa McCall, Alan Deaton, Sheriff Stilinski and Deputy Parrish with their blades. Smoke begins to ooze from their wounds, slowly killing them, as part of the Nogitsune's sadistic game. The Oni fight Scott and Kira in the illusion created by the Nogitsune, and in the physical world, Derek, Ethan and Aiden. Chris and Isaac figure out how Allison killed one of the Oni; she'd fired a silver arrowhead just as her father had shot off the mask of an Oni in the past using a silver bullet, that silver is a poison to the Oni. They arrive at the school to assist Derek and the twins. They destroy the remaining Oni with Allison's silver arrowheads, unfortunately Aiden is fatally impaled by an Oni's blade but with the werewolf killing the final Oni.

The Oni are dressed like Japanese samurai, wearing black modified Shinobi shōzoku and black masks similar to the hannya, their inner body is composed only of dark energy and they wield the Japanese sword, the Ninjatō. Their eyes glow a greenish-yellow (similar a firefly) when they are investigating a person. The Oni possess the most versatile abilities seen in the series. They can materialize out of shadow, form their Ninjatōs in the same manner, they could phase and they fight in a deadly martial arts combat style. When attacking Lydia, they supposedly muffle her banshee voice. Their Ninjatōs could release a supernatural poison to kill victims they'd wounded. The Oni can't operate during the day as the morning sun caused them to dematerialize. Oni can be warded off by mountain ash as with other supernatural beings and they are ultimately vulnerable to silver as a silver bullet shot off an Oni's mask, slowing it down and a silver arrowhead that stayed in the body destroyed the demon.

Scott and his Pack first encounter Kate's Berserkers in Mexico. One was stalking Scott and Braeden in the Aztec temple where Derek was being held. Scott supposedly scared it off with an Alpha's roar. The other had broken Stiles' jeep down in the middle of the road with its blade. Malia caught sight of the monster and was wounded by it. In "117", Peter identified the Berserkers when one of them faced he, Scott and Malia, and Peter advised they run only for them to run into the second. Scott, Kira and Malia attempt to fight them off, but they were easily overpowered. Derek arrived and managed to hold them off. The Berserkers heard a screeching werejaguar roar from Kate, a signal, and so they retreated. In "Orphaned", the Berserkers under Kate's directions attack a number of assassins that were flowing into Beacon Hills, eventually attacking the federal transport vehicle that was holding Violet, one of 'the Orphans', injuring Scott, Sheriff Stilinski and Rafael McCall, and killing Garrett, the other 'Orphan', in the process. Scott and Chris face off against Kate and the Berserkers at the abandoned Argent Arms International warehouse. Chris, armed with a machine gun opened fire on the Berserkers to no use. One Berserker was about to give Chris the killing blow, but Kate let out a werejaguar growl calling it off. In "Time of Death", the Berserkers attack the hospital, one injuring Noshiko Yukimura, the other facing and overpowering Kira and Liam when they take it on, Liam developing PTSD, subsequently having visions of the monsters as a result.

In "A Promise to the Dead", using one Berserker, Kate attacks and abducts Scott and Kira, bringing them to La Iglesia. Kate had learned from Peter that she's able to control the Berserkers because of her species, the werejaguar, or Nagual to the ancient Aztecs, the same variety as mythological "La Loba", the Bone-Woman. The said woman was depicted to have the power to create supernatural animals by ritualistically assorting their bones together, hence the Berserker conversion. She could also, using a human vessel, create Berserkers. Kate, as part of her deal with Peter, carries out his plan to have Scott killed out, having Scott transformed into a new Berserker intending to have him attack his friends, and so they'll be forced to kill him. In the Season 4 finale, "Smoke and Mirrors" one Berserker shows up at school attacking Lydia so that she, as a banshee, would not learn of Scott's planned death. The demon holds her, along with Mason, in the school's basement, but Sheriff Stilinski saves them by destroying the Berserker with a Claymore mine. The other Berserker joins Kate in the face-off against the Calaveras, along with Chris, Braeden and Parrish, but after Derek acquires new strength from evolving, gaining the talent to transform into a full wolf, he destroys the second monster, breaking the skull mask. As a Berserker, Scott goes up against his friends, but Liam, as his Beta reaches Scott's spirit. Scott, using his ever strong will, sheds the Berserker garments and breaks the skull, overcoming the Berserker conversion.

The Berserkers are immensely strong, ferocious and durable, their power outclassing most super-strong supernaturals. Appearing as a human wearing and armed with an animal's bones, and though the Berserker's monstrous state will still exist afterwards, the human vessel will eventually die physically as a result of the transformation; Malia says they have a scent "like death". Like a Kanima and the Oni, Berserkers can be used as instruments, controlled by a master. In episode "Echo House" of Season 3, Chris Argent relayed he had once fought a Berserker which was the result of a group of unnamed kids that were messing around with a series of rituals. Eventually one young man of said group became a Berserker, tapping into the animalistic mindset. Unfortunately, the young man lost his humanity; he killed innocents, tearing their bodies apart, because unlike shapeshifters, Berserkers aren't tempered by an element such as the full moon and Chris was forced to kill the man.

During Season 3, in episode "Unleashed", it's revealed Harris was a former military officer and so he was sacrificed as a Warrior. Before he was abducted from his classroom, he left behind a clue to the gang in his test papers allowing Deaton to identify the killer as a Darach. He begged for his life, saying the Darach still needs him. He knew who and also about this person's motives, but the Darach kills him. Later in "Currents", Stiles uncovers Danny's proposed telluric currents project for Harris along with a note to Danny directly from Harris to stay away from the subject. This allows them to figure out the Darach's abductions and sacrifices are aligned with the telluric currents around Beacon Hills, and that Harris wasn't only sacrificed, he knew something. It's implied that eventually Harris' body was found off-screen since Sheriff Stilinski had labeled him when he's investigating possible supernatural explanations of some crimes.

In the Season 3 premiere, "Tattoo" Ennis first appears disguised as a hospital orderly and tried to kidnap Isaac at the hospital, only to be stopped by Derek and Scott. After breaking into Derek's loft, Ennis easily subdued Cora while Deucalion explained his proposition to Derek about joining their pack. During the Alpha pack's battle against Derek's pack in "Frayed", Ennis was severely injured by Derek and Scott, which caused Kali and Aiden, along with their Emissary, Marin Morrell, to seek out Alan Deaton for help. Alan saves his life, but Deucalion kills Ennis to absorb his powers after he couldn't heal himself. The Alpha pack leader lies to Kali and the twins that Ennis had actually died from his fight with Derek. The Alpha pack declares that Derek must now either be killed or he is to join their Pack in repentance for Ennis' death, as per their rules. Marin tries to let the Alphas know Deucalion had actually killed Ennis intending to have Kali force Derek's decision to further Deucalion's plans for Derek and Scott, but he states she's lying and Kali came for Derek anyway.

Ennis was the largest member of the Alpha pack and a force of pure brutality. His brute strength and fighting knowledge made him a deadly adversary in a fight. He was arrogant, brutal and made rather zealous, amoral actions as an Alpha werewolf, declaring revenge on the Argents for their killing his dangerous Beta and Biting Paige. He was also quite murderous, killing his entire Pack and Emissary to absorb all their power. It's shown that he and Kali were involved with each other and that he followed Deucalion which is why Kali joined, according to Deucalion himself. Later, however, it was hinted Ennis felt remorse for his twisted actions when he appeared disturbed by Deucalion's speech in the episode "Unleashed".

'The Mute' is first seen in "Muted" murdering the Walcotts, a family of wendigos in their home, but is unable to kill the youngest, Sean, who manages to escape to the Beacon Hills Hospital. When Sean gives into his cannibalistic urges and takes Liam to the roof with Scott in pursuit, 'the Mute' shows up on the roof, killing Sean by axing him in the back. He leaves Scott and Liam be after motioning for Scott to remain quiet with the shushing motion, the finger over his mouth-less face. In "The Benefactor", 'the Mute' attacks Peter Hale in Derek's loft with his tomahawk laced with wolfsbane, intending to assassinate Derek. Peter is able to fight him off and take his keyboard. Deputy Parish is able to crack the code in the keyboard to track the IP address and determines it to be connected to the school's wifi network. At the school, 'the Mute' sets a trap for Derek intending to kill him off with a claymore mine which he and Stilinski are able to see first. 'The Mute' then attacks but Derek and Sheriff Stilinski are able to overpower him. Stilinski attempts to arrest him, but Peter appears and attacks the assassin, clawing him, tearing out his throat out of revenge, killing him.

When Scott had faked his death in "Time of Death", 'the Mute' appeared during his dream vision. Scott was subconsciously debating whether or not to kill his opponents to stop them. 'The Mute' would appear representing the reality to kill, visually appearing to Scott while attacking or killing Liam, and intimidatingly making the same shushing motion. 'The Mute' speaks to Scott in his computerized voice saying Scott is "evolving" into supposedly a killer as Scott had grown more fangs, indicating a growth in his transformation. The third time 'the Mute' appears, the assassin directs Scott how to kill with his tomahawk, saying "Let me help you. Let me show you", enticing Scott to kill Liam, his Beta.

In Season 4, Brunski appears in "Orphaned" where he hassles Parrish, Stiles and Lydia when they come visit Meredith. Brunski demands they come back with a court order. He then talks down to Stiles letting him know of Stilinski's overdue payment for Stiles' bills. Parrish has Brunski back off saying he owes them a favor for the Canaan PD talking him out of a DUI charge. Brunski finds Meredith's corpse after she'd hung herself. In "Perishable", Lydia and Stiles bribe Brunski with $500 for a look at Eichen House records concerning a list of people Lydia had been left by her grandmother, Lorraine Martin, who'd all committed suicide at the institution over the past decade. Brunski lets them into the file room, but just as Stiles realizes Lydia wrote down his name on the list, Brunski sneaks up behind them and tasers both of them. He binds them with restraints, and Lydia realizes the suicides committed were actually murders committed by him, including Lorraine and Meredith, and conclude that Brunski is 'the Benefactor'. Brunski bawls that some people are just beyond helping, and that he helps them, not by treatment, but by "releasing them". Brunski then plays a tape for Lydia - a recording of when he murdered Lorraine, emotionally torturing Lydia. Stiles bawls at him to turn off the tape, but he punches Stiles quiet. Lydia hears her grandmother's dying words, pleading with Brunski not to hurt "Ariel", Lorraine's nickname for her granddaughter. Brunski takes a syringe, a lethal injection and just as he stabs the syringe into Lydia's neck, Parrish appears. He orders Brunski to withdraw from Lydia's neck. Brunski scoffs, telling Parrish "Young Deputy" that he's young and bets he hasn't ever fired a gun, but Parrish proves him wrong, shooting him.

As Brunski dies, he laughs telling them he wasn't controlling Meredith or anyone, he wasn't 'the Benefactor', he was being controlled by her. The true perpetuator behind the Dead Pool, the assassinations then appears, a very-much-alive Meredith Walker. Brunski was realized to have been blackmailed by Meredith in helping her put together the Dead Pool plan because of his being a serial killer. Brunski was the culprit who'd broken into the Hale Vault, stolen the Hales' bearer bonds, converted them into cash, issued the tapes to the assassins and sent out the payments electronically under Meredith's instructions.

In "Galvanize" of Season 3B, Derek utilizes a channeling ritual with Peter's help in order to communicate with Talia's ghost. Derek envisions meeting his mother in her full wolf form atop a visualization of the Nemeton in his loft. Talia revealed to her son that the Hales didn't only live in Beacon Hills, they protected the town. In "Letharia Vulpina", Peter has Lydia listen to Talia's claws to hone in on a memory Talia had wiped from his mind before she died. Lydia hears the memory and it is revealed Talia had Peter forget he'd fathered a child – the werecoyote, Malia Tate. Jeff Davis said in an interview, Talia wiped Peter's memory of his fathering the child, as well as that of the mother, to protect the child hinting Talia was aware of her brother's duplicitous and untrustworthy character.

In Season 3B, Natalie takes the position of biology teacher at the high school after Adrian Harris took a new job "as a Human Sacrifice". Lydia is somewhat embarrassed by this, but Natalie asks Lydia not to embarrass her. Lydia is distressed in "Letharia Vulpina" when she sees Peter at the school, talking to her mother. Natalie tells her Peter said he is in Health department to give hearing tests to patients, but Lydia figures out this is a subtle message by Peter offering to help Lydia control her banshee ability. Lydia tells Natalie, the card he gave her is a phone number, Natalie brightly replies, "I know, still got it." In Season 4, "The Benefactor", Natalie allows Lydia use the Martins' lakehouse for a gathering with her friends before they sell it, but asks her to lock up the basement because she thinks a "pack of wild animals" managed to get in from the scratches she found (Malia's use of the basement to keep herself restrained during full moons). When the juniors are taking the PSATs in "Weaponized", Natalie oversees the examinations and notices red and white lesions on Sydney, a student who'd collapsed and on Coach Finstock. She promptly calls in the CDC, and helps to isolate the healthy from the sick. Natalie hopes she's wrong and she'll be "the crazy biology teacher who panicked for nothing". In "Time of Death" Natalie notices Lydia's strange behavior, her multiple escapades to the lakehouse. She asks her daughter if she can help with anything. Lydia shows her the photo of Meredith Walker, whom Natalie recognizes by name. Natalie tells Lydia of her paternal grandmother, Lorraine Martin who was also interned at Eichen House. Lydia subsequently learns of Lorraine's legacy.

During Season 1, in the webseries Search for a Cure, Scott and Stiles come across Dr. Fenris. Scott was looking for a cure of being a werewolf and Stiles said Dr. Fenris was the closest thing they had to an expert. They asked Fenris if they could ask him questions concerning his knowledge of werewolves. Fenris said no, that he was no longer involved with anything like that. Scott and Stiles later break into his house and Dr. Fenris catches them, holding them at gunpoint. Scott convinces him to put his gun down, saying he's a doctor, he has an oath to help people, not hurt them, and to just give them five minutes. He relents. He gives them a basic rundown of the various stations of werewolves the Alpha, Beta, Omega, and the rights of passage they would conduct during the Wolf moon, the full moon in January. He's stressed, saying he needs a cigarette and his housekeeper has hidden them. Scott and Stiles see a photo of the woman he met in Wisconsin. Derek Hale is in the picture as well - the woman is presumed to be Talia Hale, his mother. Scott asks Dr. Fenris if he knows if there is any cure for someone who was Bitten. Dr. Fenris says he's never heard of any cure, despite his expertise. He demands to know why are they are interested in what he was obsessed with which resulted in his life, both personal and professional, being ruined. Scott and Stiles are disappointed but are sympathetic in what Dr. Fenris has been through. He insists they leave, but while they are leaving, Scott asks does he still believe. Dr. Fenris says sometimes, but he always returned to reality. Scott then tells him, if he really needs a cigarette, they're on the book shelf, behind the books. He flashes his werewolf eyes, then leaves. Dr. Fenris finds his cigarettes. Suspiciously, he runs back outside, but Scott had already left.

In "Wolf's Bane", Dr. Fenris is treating Jackson having a look at the scratches Derek had unintentionally left on the back of his neck. Dr. Fenris tells Jackson he has wolfsbane poisoning from the claw marks. Derek had been poisoned by wolfsbane and had passed on the infection to Jackson. In Season 4 episode "A Promise to the Dead", Dr. Fenris is seen now employed at Eichen House and is a doctor stationed in the secret prison level of Eichen House that houses supernatural beings, presumably more integrated into the supernatural world. Alan had returned a wendigo, Patrick Clarke, to the institution. Dr. Fenris thanks Alan and allows him to see one inmate, Valack, but warns him the last person who saw Valack too close "left the cell, but not the building". Fenris brings Deaton out after Valack renders him unconscious. He meets Lydia who comes to collect Deaton.

Tara arrives at the high school late at night in "The Girl Who Knew Too Much". She had responded to a potential 911 call. When she searches the school, she sees a pair of immobile feet supposedly being dragged into the locker room. She moves into the locker room, gun drawn. In the shower, Tara sees a corpse, against the wall - herself. Shocked immobile, the Darach comes from behind and strangles her dead. Her body is placed as she saw in the illusion. Stilinski and Stiles are shocked and affected by her death: Stilinski is determined that the killer is not getting away with one of his own. Scott's Pack believed Tara was sacrificed as a Guardian, being in law enforcement. It is later revealed by Stiles, Tara was not always a cop, she was a middle school teacher, so she was actually sacrificed as a Philosopher.

Derek was content in his relationship with Paige. His uncle Peter, ostensibly, gave the relationship his support saying Paige is "perfect for him". But duplicitous as always, Peter deceptively talked Derek into the idea of turning Paige, to remove any inhibitions between her and Derek. After much persuasion, Derek reluctantly agreed to the idea. Paige had received a note supposedly from Derek, telling her to meet him late at the school one night. Peter had approached Ennis, an Alpha werewolf who was needing a new member for his Pack, to give Paige the Bite. Ennis appears attacking Paige to her fright. When Derek hears Paige's screams of fright, he changes his mind at once. He tries to stop it but is too late, Ennis had already bitten Paige. Unfortunately, Derek saw the transformation wasn't taking effect. Paige was expelling black blood; an effect of the Bite being fatal to her instead. Derek immediately takes Paige to the root cellar, the Nemeton, cradling her and fervently tries to save her life, siphoning away her pain. Paige asks him if she's going to die, Derek morosely nods yes. Paige tells Derek she suspected he was different, e.g. he'd say how he'd catch a scent, hear things. She comforts Derek, telling him she loved him anyway. Paige eventually let out a plea she can't take the pain anymore. Grief-stricken, Derek takes Paige gently in his arms, and hugs her with enough strength to break her neck, giving his first love a mercy-kill. Having taken an innocent life, Derek's werewolf eyes changed from yellow to blue, and Paige's death would haunt him in the years that followed.

In the present timeline, it was later revealed to Derek by Jennifer Blake that because Paige was a virgin and had died in the Nemeton, her Virgin status gave the tree a spark of power. This lone ember of magic gave the nearly-dead Jennifer the ability to survive her attack from the Alpha werewolf, Kali, just months later.

In "Galvanize", Barrow is forwarded to Beacon Hills Memorial to extract the shrapnel from his body. Melissa McCall takes his pre-op interview, to her discomfort. He rambles to her that he murdered those kids because he claims they had "glowing eyes", which makes Melissa and the Sheriff suspicious of him. During his surgery, a tumor emerges from inside his body which bursts open and flies come out of it and in the mayhem Barrow escapes from the hospital and heads to the high school. He performs minor surgery on himself closing his surgical wound with a stapler. Scott and his allies are on high alert, searching for him after Melissa and the Sheriff let him know of his "glowing eyes" statement. Barrow is able to disguise his scent using the chemicals he found in the chemistry lab, where he was able to hide from the werewolves trying to track him. Barrow had been left an unexplained coded message on a blackboard for him to kill Kira Yukimura. He shows up at the Yukimura residence knocking Scott unconscious and abducting Kira. He holds Kira hostage at his old power substation. He takes Kira's phone and takes pictures with the flash on it, exposing Kira's Kitsune nature. He subdues Scott who attempts to rescue Kira and he attempts to murder Kira by zapping her with a live electric wire. Kira is electrified, but the current doesn't harm or kill her, because she is a Thunder Kitsune. Her Foxfire talent manifests, blasting the electrical field and absorbing the gigawatts through her hands. Barrow was knocked aside from the blast, but wasn't seen again after that. It's currently unknown if Barrow was killed or knocked unconscious or if he was recaptured or is still on the run.

Its later revealed Barrow was controlled by the Nogitsune through the flies that were present in his body. The Nogitsune had maneuvered Barrow into activating Kira's Foxfire talent when Barrow made the move to kill her with a live wire, to super-charge the Void Kitsune's power and control over Stiles' body.

In "Silverfinger", Chris, along with Allison and Isaac track down Katashi for information regarding the samurai-like entities that have appeared in Beacon Hills. They deal with his private security, which included a werewolf named Kincaid, until Katashi calls them off after Chris shows him the very same broken mask Chris had shot off twenty-four years earlier. Silverfinger reveals that the beings are demons called the Oni and they are hunting for the dark, malevolent form of the Kitsune, the Nogitsune which possesses a host and draws its power from strife and chaos, pain and tragedy. He also reveals that the marks left on victims of the Oni is the Japanese kanji for self [己] indicating that said victim is still themselves and is not possessed by the Nogitsune. He declares to Chris that he owes him his life, his honor because when Chris saved his life from before as Katashi had intended to flee and according to Yakuza code he would've paid with his "head" for such an act of cowardice. Silverfinger concludes with a warning that if they have a Nogitsune amongst them, they should let the Oni destroy it. In the episode "Letharia Vulpina", Silverfinger is revealed to be murdered, supposedly by the Nogitsune and his death is blamed on by Derek and Chris when they got arrested.

After Katashi is found murdered, Kincaid raids the federal transport vehicle in "Echo House" containing all the evidence surrounding the murder including his silver prosthetic and takes the finger. Scott's allies confronts him saying they need the finger. Kincaid attempts to make a deal saying it's worth $3 million. When they demand the finger anyway, Kincaid takes the gang on, knocking Kira and Allison aside and beating Scott down, stating that the young werewolf has the eyes of an Alpha, but lacks the strength. Ethan and Aiden overpower Kincaid and almost kill him, but Scott orders them to spare him and takes the Shugendō scroll from the prosthetic, saying they're there to "save a life, not end one".

Decades before Lydia was born, Lorraine was in love with a woman named Maddy. Lorraine worked for IBM in San Francisco. One weekend, at the office, Lorraine heard a strange sound. She heard rain and thunder, but when she looked outside it was a clear blue sky. The sound became so loud, Lorraine Screamed - she was a banshee. Her lover Maddy was about to be going out on the lake, so Lorraine suspiciously asked her about the weather, Maddy replied it was clear at the lakehouse too, so Lorraine said nothing about what she heard. The thunderstorm she'd heard in her premonition arrived, while Maddy was on the lake; there was an accident, and Maddy died.

Lorraine spent years trying to learn how she'd known the rain would be coming, how she knew Maddy would die before knowing it happened. She brought in parapsychologists, pseudoscientists who designed the study in the lakehouse along with the record player, and later on, mediums and psychics. Everything failed, until Lorraine found Meredith Walker at Eichen House. Meredith was brought in, and put on headphones for tests, but ended up just hospitalized. It's surmised Lorraine eventually had another banshee premonition: the entire Dead Pool situation which would actually occur in the present timeline. Lorraine had written the entire code which ironically would be used as the actual hit list, and had provided the actual computer servers which would serve as the Dead Pool. Lorraine was declared mentally sick and was interned at Eichen House. Lydia learns of Lorraine's legacy; in Lorraine's will Lydia had been left behind instructions to scatter Lorraine's ashes out onto the lake, but she found the urn was filled not with her ashes, but mountain ash, as well as code that consisted of a list of names. This list was a list of people whom were murdered by Brunski at Eichen House, he being a serial killer.

One day, Lorraine experienced another premonition; she escaped Eichen House and headed to the lakehouse. She was in the study, listening to the record player when Brunski came upon her. He injected Lorraine with a syringe, a lethal injection and Lorraine asphyxiated. Brunski had recorded his murder of her, and plays the tape for Lydia. Lorraine had predicted Lydia's own near-death experience at the hands of Brunski. Lydia hears her grandmother's final breaths pleading with Brunski not to hurt "Ariel", her nickname for her granddaughter.

Haige is seen in "Perishable", where he's tied Parrish's hands to his steering wheel of his cruiser. He pours gasoline over the car. Parrish is shocked at Haige's actions. Haige says Parrish is worth $5 million the Dead Pool. Parrish tries to talk him out of his actions, but Haige throws gasoline on Parrish, throws in a lighter, setting him on fire. Haige is seen at the station hoping to collect Parrish's bounty on his laptop, suddenly Parrish walks having survived the fire unharmed because of his unknown supernatural status. Parrish, out of anger, attacks Haige and beats him into submission. Haige is incarcerated afterward, and is in the interrogation room, confronted by Braeden in her US Marshall pose. She breaks his nose. Braeden learns from Haige of the planned assassination of Scott, Liam and Malia at the school's annual lacrosse bonfire.

Geyer is first in "Muted", conversing with Melissa regarding the financial mess the hospital is in. When Liam is admitted to the hospital after Scott accidentally injures him during lacrosse practice, he converses with his step-dad saying it is his fault as he took on two juniors. Geyer shows him sympathy, while also saying they'd always agreed to 'Play smart, not hard.' In "Time of Death", Dr. Geyer is paged when Scott is forwarded to the hospital, supposedly dead. Geyer springs into action, having personal prep Scott for defibrillation. He shocks a number of times, but fails. He sets the defibrillator to 360 and shocks one last time. Scott remains asystole. Grimly, Geyer decides to call in and marks the time of death. He asks someone to page Melissa. He informs Melissa causing her to break down uncontrollably and he tries console her. Geyer didn't know Melissa was only acting: Scott's death was a ruse as part of a plan to flush out 'the Benefactor'. When Noshiko is injured by the Berserkers, Geyer runs in and sees Melissa applying pressure and immediately runs to get help. When Scott is revealed to be alive, Geyer wants Scott to return to the hospital so that some tests can be done, as well as answering many questions.

Sheriff Stillinski later discovers that Myers was an insurance investigator assigned to the Hale House fire and was fired for suspicion of fraud. Myers had been hired by Kate Argent cover up the fire as an accident. Right before he died, he apologized to Derek Hale.

It's later discovered that Reddick and Unger had multiple priors all over their records including arson. They were arsonists hired by Kate Argent to set the Hale House on fire.

Sheriff Stilinski later links their murders to the Hale fire. Unger, Reddick and the video store clerk killed by the Alpha werewolf back in the episode "The Tell" were all convicted arsonists.

Bennett was killed by the Kanima, on orders from his Master, Matt, because Bennett was involved in the incident in 2006 where Matt almost drowned when he was a little boy.

In "Fury", it's revealed Tucker was on Beacon Hills High swim team in 2006 and was present at the pool party where Matt Daehler almost drowned. Matt, as the Kanima's Master, had Tucker killed because he said Tucker 'murdered' him.

Sean was on the Beacon Hills High swim team in 2006. The team had just won state championship and was at their coach's Lahey's house to have some drinks and a pool party to celebrate, but Matt Daehler almost drowned in the pool and had the Kanima kill Sean because he didn't save him, stating Sean 'murdered' him.

It's revealed the Master is Matt Daehler, and he had her and Sean killed because they almost caused him to drown at a pool party where they were drunk when Matt was nine.

Kara was on the swim team for Beacon Hills' high school in 2006 and the team won state championship. The team had a pool party and drank alcohol to celebrate. A 9-year-old Matt Daehler was at the party and nearly drowned while the drunken team just laughed at him. Matt had the Kanima kill Kara because of the incident.