The following is a list of various characters in the fictional universe of the anime and manga series Sgt. Frog and related works.
The Keroro Platoon (ケロロ小隊 Keroro Shōtai) is led by Sergeant Keroro. While most platoons contain thirty or forty soldiers, the Keroro Platoon only has a meager five. Its full name is the Gamma Planetary System, the 58th Planet, Space Invasion Army Special Tactics Platoon (ガマ星雲 第58番惑星 宇宙侵攻軍特殊先行工作部隊 Gama Seiun Dai Gojūhachiban Wakusei Uchū Shinkōgun Tokushu Senkō Kōsaku Butai). In the English dub of the anime, the unit is referred to as the Advance Recon Mission Preparatory Invasion Terror Platoon (A.R.M.P.I.T.). Keroro refers to the acronym as being "unfortunate".
The initial operation of the Keroro Platoon was to stealthfully survey Earth and relay information to the awaiting Keron Invasion Army. The five members were dispatched throughout Greater Tokyo and surrounding area to assess Earth's weakness and prepare for total military takeover. Having quickly infiltrated the Hinata house, Sergeant Keroro concealed himself in one of the bedrooms, but was accidentally discovered by the Hinata children, a pair of middle school siblings. Shocked by their ability to see him, he was overpowered, captured and temporarily stripped of his weapon, the Kero Ball. With Keroro coming into direct contact with the Earthlings, the invading army lost their element of surprise, deemed the campaign compromised and immediately started withdrawal procedures from Earth's orbit.
Abandoned by the army and without the support of his platoon, Keroro must unite his scattered soldiers, survive his prisoner of war manual labor, and outwit his captors. He is eventually united with his platoon and subsequently given revised orders to continue the invasion campaign, but by themselves. Now, they must fulfill their new mission, protect their human friends, their home base, and the Earth from other alien invaders.
The platoon's hierarchy in military rank is similar to the Army ranks of the Japanese Empire during World War II and have based certain weapons and terms after the Imperial Japanese Military, but remains faithful to the perception of the alien invader with higher technological achievements.
Voiced by: Kumiko Watanabe (Japanese), Todd Haberkorn (English)
Sergeant Keroro (ケロロ軍曹 Keroro Gunsō) is the leader of the Keroro Platoon, evidenced by the leadership star he wears on his belly. He has a green body and yellow headgear with a red star in the middle. When members of the Keroro Platoon happen to be caught in an explosion of some kind, they are seen with an afro. Keroro's black afro is most commonly seen.
Keroro used to be a good officer, but since his arrival to Earth, he has lost most of his interest in the invasion, preferring to spend his time making [[Gundam model, watching anime (specially the Space Captain Geroro series, a parody of Space Battleship Yamato), or reading manga, when he is not doing the house chores of the Hinata household. Occasionally, specially when there is a lot of moisture in the air (similar to the levels back in Keron), he reverts to his previous self, but that usually ends with a Nyororo sucking off all of Keroro's moisture.
Keroro is carefree, happy-go-lucky, negligent, greedy, vengeful, unlucky and a coward (especially against Natsumi), with a short attention span for anything not related to his models, though he occasionally displays bouts of unselfishness and bravery. He often misspends the invasion budget on models and he always leaves all the paperwork for their bosses back in Keron for the last possible moment, often ending up punished for it. He is childhood friends with platoon members Giroro and Dororo, and the responsible for most of the later traumas.
His invasion plans often hide personal goals, like getting back at Natsumi, and even when they do not, they are often harebrained ideas without a chance of success. His plans for raising money usually follow the same pattern and often involve Momoka hiring them for some crazy plan of her own. The few plans that do have a chance of success usually fail due to setbacks, Fuyuki's friendship appeals or because another character points out that if Earth is destroyed, it would mean no more Gundam models.
Voiced by: Etsuko Kozakura (Japanese), Brina Palencia (English)
Private Second Class Tamama (タママ二等兵 Tamama Nitōhei) is ranked Private Second Class in the Keron Army's Keroro Platoon.[1] He is the newest member in the planetary invasion troop, and also the youngest, still having his tadpole tail and white face. Tamama has a dark blue body with yellow headgear and big round eyes. He wears a green and yellow mark on his head and belly, which matches the Shoshinsha mark that new drivers in Japan must display on their cars for one year after obtaining their licenses. His afro is a reddish-brown. He first appears on the third chapter of the manga and in the 2nd episode of the anime.
Tamama idolizes and has strong feelings towards Keroro, though the latter seems unaware of them. He hates Mois because of her own feelings for Keroro, and trains hard until the day when he defeats her and gains Keroro's affection. However, sometimes he is shamed of his own evilness when faced with Mois's pure heart. He relies on pure energy in battle, shooting his powerful attack, Tamama Impact, a yellow energy beam, from his mouth, and he's often seen training, usually beating up a piece of wood with a sloppy drawing of Mois.
Tamama has mood swings that border on a split personality, just like his human partner Momoka Nishizawa. While usually gentle and cheerful, Tamama can become a vengeful, raving maniac at the drop of a hat.[1] Tamama is also prone to fits of jealousy, usually towards anyone who gets near Keroro, especially Angol Mois, who he frequently refers to as "that damn woman".[2] These negative feelings power his energy beam.
Tamama loves snacks and sweets, and living with the ultra-rich Momoka means he has as many as he wants. His name stems from the Japanese word otamajakushi "tadpole".
Voiced by: Jōji Nakata (Japanese), Christopher Sabat (English)
Corporal Giroro (ギロロ伍長 Giroro Gochō) is the Corporal of the Keroro Platoon and their weapons expert. His body is a dark red in color, while his headgear is dark maroon with a skull in the middle. He is the only member of the platoon who doesn't wear a symbol in his belly. Instead, he wears a belt with a rectangular buckle diagonally across his body. However, when he was a tadpole, he had a skull symbol on his belly.[3] His afro, which is rarely seen, is blond. He first appears on the second volume of the manga, chapter 11, and in the 3rd episode of the anime.
Giroro is in love with Natsumi Hinata, something everyone but Natsumi seems to know, since she defeated all his traps he set when he arrived to the Hinata house.[4] That is why he would attack anyone who harms her and also the reason why he views Mutsumi Saburo as a strong romantic rival, but also Koyuki, who has a crush on her.[5] Ever since his first encounter with the Hinatas, Giroro has been living in a tent in their backyard, where he roasts sweets potatoes he sometimes shares with Natsumi and obsessively cleans his weapons. The buckle of his belt hides his treasure, a photo of Natsumi.[6]
Giroro has a short temper, and he is often irritated by the laid back and unfocused attitude towards the invasion of the other members of the Platoon, specially Keroro. He appears to be gruff, but he is an honorable frog with a good heart. He often shares his tent with a whiteish pink female cat whom he rescued from the rain and named "Miss Furbottom.[6] Unknowingly to him, the cat is in love with Giroro. He lacks any other hobby apart from his weapons and he is terrified of ghosts[7] and sea cucumbers.[8] He also cannot drink more than a drop of alcohol without passing out.
Despite being absolutely dedicated to the call of duty, Giroro is often used as comic relief throughout the series. Most often he is crushed by something dropped from Natsumi's window, or a falling object from space, usually containing an alien of some sort (or Karara). Other times his romantic dilemma with Natsumi is what leaves him uncharacteristically clumsy and blundering. His feelings toward her are also often used by other characters to get him to agree to something, by saying that she will like it. That's why sometimes, even if the invasion plan fails, he is seen with a dopey happy grin on his face if the outcome had made Natsumi happy.
Giroro is the one who suffers more misfortunes of the entire platoon, either by accident, bad luck or by being deliberately chosen by Keroro, Tamama and/or Kululu as guinea pig. Among others, Giroro has been forcefully attached to a machine to be used as a living "fear-meter" during an horror story competition,[9][10] merged together with Keroro,[11] became merged with Natsumi's right hand due to a failed experiment,[12] transformed into a liquid form[13] and even he also became human for a short time, with blond hair and tan skin in episode 196, Return of GeroGero 30 minutes. One of these accidents happened during an experiment to bring out the strongest personality from within, where Giroro mistakenly set off the "energy bullet" that was originally meant for Keroro. He split into 7 characters (including the original), one for each physical manifestation of his personality.[14]
Voiced by: Takehito Koyasu (Japanese), Chuck Huber (English)
Sergeant Major Kululu (クルル曹長 Kururu Sōchō) is the head of communications in the Keroro Platoon. His body is yellow in colour, with orange headgear that includes two headphone-like white pieces over his ears. His forehead and belly mark is a filled spiral. He also wears glasses with spirals on them. He first appears on the second volume of the manga, chapter 20, and in the 9th episode of the anime. Kululu was originally blue when he was little, but at the end of the short movie Secret of the Kero Ball, he became yellow, due to being stuck in a huge plate of curry that Keroro made for him from the Kero Ball.
Although he is of a higher rank than Keroro, he is not the leader of the Platoon due to his unpleasant and unnerving demeanor, which has given him the nickname of 'Yellow Devil'. Kululu is renowned to be enigmatic, deceitful, and downright evil, and has a habit snickering at the beginning and end of a sentences. Unlike the rest of the platoon who specialize in combat, Kululu's expertise lies in his high-level technological prowess, including hacking and inventing, and has designed and created most of the gadgets and weapons used by the platoon. Being the least emotional of the Keroro Platoon, he is almost never seen being moved to tears or smiles by any events, though at the same time he rarely, if ever, panics when something goes wrong, likely due to the multiple dangers from his own inventions outweighing it. Kululu's Achilles heel is Mois' pure heart. He has no defense against it, and when confronted by it, he's willing to do anything just to get her to leave.[6]
He is generally disliked by everyone, most of the characters seeing him as a disagreeable prankster and, in the series, action figures of him tend to sell very poorly on Keron, (much to Kululu's chagrin[15]) but Kululu seems to take pride in his bad attitude. When ever something bad happens to another character or is blamed for doing something, he laughs in an medium to high pitched voice saying "kukukukukukuku". Despite his attitude, he gets along quite well with Mutsumi, his human friend, and Aki Hinata, with whom he has a sort-of stalkerish crush on. Kululu and Giroro greatly loathe each other due to their vast differences (Brain vs. Brawn)[16] and as a result, Kululu usually uses Giroro as a guinea pig for any invention that he creates. Kululu has a genuine love and talent for curry, but this is often taken to an extreme point where he can even bathe in it.
His name comes from the Japanese word for the phrase "round and round" ("kurukuru"), referring to the spirals seen on his glasses. His name may also come from the incurable brain disease named 'Kuru'[17] The term "kuru" derives from the Fore word "kuria/guria", 'to shake' a reference to the body tremors that are a classic symptom of the disease; it is also known among the Fore as the laughing sickness due to the pathologic bursts of laughter people would display when afflicted with the disease.This may also refer to Kululu's insane 'Kukuku' laugh.
Voiced by: Takeshi Kusao (Japanese), J. Michael Tatum (English)
Lance Corporal Dororo (ドロロ兵長 Dororo Heichō) is the latest of the platoon to appear. His body is medium blue (although painted completely black in the manga) with light gray ninja-like headgear and mouthpiece. His forehead and belly mark is a four-pointed shuriken and he always carries a sheathed knife on the back. His pink afro is the one seen more rarely. He is the last member of the platoon to appear, making his debut in the 7th volume of the manga, chapter 55, and the 13th episode of the anime.
Then known as Lance Corporal Zeroro (ゼロロ兵長 Zeroro Heichō), he graduated from the Keron Military Academy under the rank of Lance Corporal. After serving alongside Zoruru in an elite assassin squad, under the command of Captain Jirara, he was assigned as the assassin of the Keroro Platoon alongside Keroro, Giroro, Tamama and Kululu. They were given the mission to conquer Pekopon. After crash landing on Pekopon, Zeroro was rescued by ninja-in-training Koyuki Azumaya (in the anime, he was rescued by Koyuki and her dog Zeroyasha). Wishing to follow the way of the ninja, Zeroro changed his name to Dororo.
His reunion with the rest of the platoon does not start well, since he just appears to resign because he no longer shares their invasion objectives.[18] However, after he and Koyuki are captured by Viper and the platoon comes to rescue them,[19] they mend their friendship and he rejoins the platoon, after making them steam a bit. In the manga, he and Koyuki move to a house besides the Hinatas,[5] but in the anime they live in a small traditional house in the mountain, bordering the Nishizawa state.
As Dororo, he is a kind and meek soul, but his skills in stealth and speed-based attacks are unrivaled. He spends most of his time training, reading, or spying on the actions of Keroro Platoon and others. Dororo is often forgotten by the rest of Keroro Platoon, causing his psychological trauma switch (something created from similar childhood incidents of comic abuse and neglect, most of them Keroro's fault) to turn on, making him sit in a corner and cry. Also, Dororo will not participate in plans that are potentially harmful to people's feelings or well being, the nature, etc. .
Dororo speaks very formally and often ends his sentences with "de gozaru", an archaic form of 'desu'. His laughter thrives from the word zaru. Dororo's self referring nickname, 'sessha', is an archaic male form of "I", primarily used by samurai. He has a small crush on Koyuki, but it is not easily shown.
The Keroro double platoon was created by the Keroro platoon to stand in for them while they took the day off. The double platoon is easily differentiated from the real one due to their differently shaped eyes, and their somewhat curled feet (and, in Kululu's double case, a conic head), but Fuyuki and Natsumi were unable to notice the difference. However, they were left in invasion mode and tried to invade Earth for real before the real platoon stopped them.
The platoon took the robots off again to do their homework, apparently limited by Kululu. However, the platoon changed mode to "do whatever you want" and took their obsessions to the extreme. They escaped to space and committed several felonies. Garuru's platoon was charged with stopped them but mistook them for the real Keroro platoon. The Garuru platoon defeated them but they didn't realize they were robots.[20]
Voiced by: Akio Ōtsuka
First Lieutenant Garuru (ガルル中尉 Garuru Chui) is a Keronian S-rank sniper, a first lieutenant of the Keron Army, and the leader of the Garuru Platoon. The Keron Army sent the Garuru Platoon to replace the Keroro Platoon in their mission to conquer Pekopon. Garuru defeated his younger brother Giroro in a one-on-one gun match, but was later defeated in a rematch. Thanks to the Keroro Platoon's friendship and united power, the Garuru Platoon was defeated. It was however strongly hinted that Garuru's true mission was merely to test the abilities of the Keroro Platoon.
Garuru is known for being an ideal platoon leader: powerful, strictly no-nonsense in battle, and gravely intimidating. However, Garuru does show a lighter side once in a while, especially when matters concern his younger brother Giroro. Humorously, he has trouble using chopsticks.
Voiced by: Akeno Watanabe (Japanese), Chris Cason (English)
Formerly Tamama's apprentice and still calls him "master," or "senpai", Private First Class Taruru (タルル上等兵 Taruru Jōtōhei) was more clumsy than Tamama in the past. Taruru first appeared to see if all the rumors about the Keroro Platoon was true, revealing what Tamama told him about the platoon. In the anime he also appeared a couple of times with his childhood friend Karara, forming a duo of mischievous tadpoles. Despite Taruru's clumsiness in the past, he became skilled since training with the Garuru Platoon and has exceeded Tamama in both growth and rank, defeating him in a face-off,[21] but was defeated by a persevering Tamama.
Taruru is light blue with gray headgear and wears the Koreisha mark in belly and forehead. In his first appearance, he still had his tadpole tail, but later grew up and lost it.
Voiced by: Kappei Yamaguchi
Recruit Tororo (トロロ新兵 Tororo Shinpei) is the newest member of the Garuru Platoon who, like Kululu, is the team's intelligence officer and hacker. He captured the allies of the Keroro Platoon until the computers were damaged by Dororo's deathblow.
According to Kululu, Tororo was his rival back in Planet Keron because of his desire to prove others of his higher intelligence and to put Kululu down. Because of Tororo losing to Kululu several times, the young, twisted, and mad genius attempted attacks upon him, though, he could never gain his desired victory.
He later destroyed the entire Keroro Platoon Double. He then visited the real platoon in un-wanted honor. He usually laughs like Kululu.
Voiced by: Kazuki Yao
Lance Corporal Zoruru (ゾルル兵長 Zoruru Heichō) was once a former partner of Dororo's. He captured the allies of the Keroro Platoon until embarrassed to be forgotten by Dororo. He was defeated by Dororo Double and visited the Keroro Platoon in honor. Also known to have worked with Keroro, Giroro and Dororo/Zeroro prior to the Earth invasion. He was the only one who was not defeated while on Earth. He appears in episode 101-103. He also appears in episode 130, batteling the robot doubles of the keroro platoon. His 3rd appearance is in episode 336. He also appears for a brief moment in the 3rd keroro gunsou movie credits.
Voiced by: Satsuki Yukino
Chief Medic Pururu (プルル看護長 Pururu Kangochō) appears in the series as the most recent and only female member of the Garuru Platoon, a chief medic and expert nurse, and a childhood friend to Keroro, Giroro, and Dororo. She has an energetic, down-to-earth, and somewhat strict and stubborn personality, but is also nonviolent and mature, unlike most of the major characters of the series. She graduated from the Keron Military Academy at the same time as her childhood friends Keroro, Giroro, and Dororo. Pururu is also sometimes referred to as obaa-chan which means old lady -which makes her go into small questioning fits of self worth- despite her still having a tail.
In the anime series, she later comes to stay on Earth to take care for the health of Keroro's Platoon.
Her name and energetic personality suggest that her character was based on Elpeo Puru from Mobile Suit Gundam ZZ
Voiced by: Norio Wakamoto, Hoko Kuwashima
The leader. His real name is Shirara. When he was young, he was a friend of Pururu, who was kind to him when he was hurt, and put a star-shaped plaster on him. Due to this he has a crush on Pururu. However Keroro ripped the plaster off him, and although Pururu punished him, Shirara was upset and vowed revenge. So when he found a special helmet called the Keromet he put it on and was powered up. He changed his name to Shurara, formed the Shuara Corps and decided to get Keroro's Keron Star off him. However the helmet malfunctioned and Keroro had to destroy it. After this he became Shirara again and returned to Keron with Pururu.
Voiced by: Kentaro Tone
Putata is a skilled artist who is working for one of Planet Keron's overzealous killers, the Shurara Corps. He has the color of red around his left eye, painted spots on his body, and his main color is very light olive green. Putata's symbol on his stomach and forehead are in the shape of a light green shuriken. His paint brush and cap-like helmet are made out of mostly silver-colored metal, and it appears that Putata's paint brush is also used as a fatal weapon, including Keronian's weakness, a smaller version of a Nyororo. His paint brush has its limit of ink, so Putata has to use his Nyororo painbrush to suck Keronians up and use the liquid as ingredients for ink to make his drawings come to life, however Keroro destroyed the paintbrush by holding some hot curry as he was sucked.
In the episode where he was first introduced, Putata was seen vandalizing the residence and property of the Hinata family. The Keroro Platoon, by that time, did not know that he was apart of the Shurara Corps.
Putata usually laughs like Kululu, with his snickers at the beginning and end of sentences. Except he has his own style of laughing. "プ-タ プタ プタ!" (Pu-ta puta puta!) Putata also usually shouts "Yeah yeah yeah! Yo yo yo!" while painting. Putata's way of acting is different also, except he is the most energetic, lively, and vivid of the Shurara Corps, with his snickers and joyous shouts being heard almost always. He is very rarely seen being moved to tears, nor has he ever been bereaved by anyone else, whether it was situations he or his team are up against or minor problems he has to fix.
Voiced by: Chō
The puppeteer. He appeared in episode 161 with Putata and can take control of whoever he attaches his strings to, he was also controlling a puppet when the real him was invisible for the whole of the episode except at the end when he was revealed by Mutsumi/Saburo.
Voiced by: Kunihiko Yasui
The mutant. He's what's called a liquid keronian and appears in episode 169, when he turns Giroro into liquid form and sets out to attack Natsumi. He also appears in 177 when Dokuku frees him.
Voiced by: Takeshi Kusao
The ghost. He is what's called a gas keronian, and is Giruru's younger brother, he came to tell Giruru that he was quitting the Shurara Corps because he was not being paid enough. This was in episode 177. He also has the ability to possess people by going up their bottoms, and took control of Tamama mainly but also briefly took over the rest of the platoon and Fuyuki.
Voiced by: Toshio Furukawa
The assassin. Like Yukiki he appears in episode 202 in Shuraras base and fought the platoon with their own shadows but was soon defeated after the lights were off. His name comes from the Japanese word kage (影 shadow).
Voiced by: Kurumi Mamiya
The living plushie of the team. Former member of Keroro's alliance against the Black Stars. She was at first a doll, but Shurara brought her to life.
Voiced by: Hiromi Hirata The Spy. He appeared in episode 188 and was controlling Nuii who soon broke free of Gyororo's control and turned on him.
Voiced by: Keiichi Sonobe
The robot. Robobo turned everyone into an electrical appliance to make them helpless but Dororo came in and defeated him, but came back bigger so the platoon had to use the Grand Keron to defeat him. This was in episode 185.
Voiced by: Eiji Maruyama
The snowman. He appeared in episode 202 and was laughed at when the platoon saw his weapons and was easily defeated when kululu stopped the snow falling.
In the spin-off series in Keroro Land, Keroro created an alliance to fight against the Black Stars. This alliance included: Toriri (bird-like), Saruru (monkey-like), Inunu (dog like), Aruru (a nurse), Mukaka, Tsunene (fox-like), Tanunu (tanuki-like), Golulu (a golem) and Garar (a sand granite Keronian).
The Black Stars is a fictional team from Keroro Land that consists of four deadly daredevil Keronians bent on conquering Keron: Mahaha who specializes in cycling, Merara who specializes in hoverboarding, Megaga and Mekaka.
Firuru appears in the Sgt. Frog spin-off magazine Keroro Land. Firuru (sometimes written as Filulu or Fielulu) is a sports doctor and the leader of Team Sporty in the Keroro Land magazine. This team, consisting of members Piroro, Metoto, Besusu, Pokaka, and Oyoyo, was assembled in order to fight against the Black Stars, a group of four evil Keronians. Other teams were led by Keroro, Giroro, Zeroro (Dororo while back on Keron), and Zoruru.
Voiced by: Kenichi Ogata (Japanese), Greg Dulcie (English)
The father of Keroro. He is idolized as the highest ranked member of the Keron Army. He is both admired and feared by his beloved son. He frequently appears on vacation. He saved the Keroro Platoon by giving Viper a Parents Day message from his parents, revealing he was as weak and idiotic as his son. He revealed that Giroro's father, the Demon Sergeant's friend was also visiting and left with a photo of himself and Giroro's father. He also has a Hitler Mustache and a Pickelhaube.
Voiced by: Kumiko Watanabe (Japanese), Stephanie Young (English)
A blue Keronian like her son. She may look weak as she is wearing a mask, but she is actually a skilled fighter that can knock down machines with pans.
Voiced by: Junko Noda (Japanese), Alison Viktorin (English)
Karara (カララ) is the daughter of the rich Dobaba family. She is often put in danger until rescued by members of the Keroro Platoon. She appeared with her childhood friend, Taruru until Taruru joined the Garuru Platoon and was replaced by Karara's best friend, Chiroro. She is of light green color with purple headgear, she has blue-green eyes and still has her tadpole tail.
Karara was scheduled by her father to be married against her will, so she left Keron (apparently with Chiroro) and came to Earth. She was temporarily enrolled as the Private Third Class of the Keroro Platoon but causes trouble and is rescued by Tamama from her father who attempted to kill her as punishment for disobeying him. She had gained feelings of love towards Tamama, Dororo and Giroro, and even attempted to marry Kululu. She was kidnapped but was rescued by Dororo and she was gifted with a sword (Chiroro had one too) that when freed from its chain gives her a ninja's clothing along with a white scarf and a silver mask over her eyes. She assists the Keroro Platoon in rescuing Chiroro from Viper until Karara gets taken hostage by Keroro in a Viper Pekopon Suit. While a reformed Viper grabbed Keroro, Dororo destroyed the Pekopon Suit with his attack "Blade of the Phoenix". Karara landed in the arms of Giroro and thus, she fell in love with him while Keroro was arrested. While entertaining the angry 753, Keroro gave advice to Karara and Chiroro, and then they had successfully turned 753 back to normal and thus, she fell in love with Keroro.
Voiced by: Natsuko Kuwatani
Chiroro (チロロ) is the best friend, twin sister to Karara and daughter to Dobaba. She first appears as a fellow ninja with Karara in order to impress Dororo. Her body is light yellow with white headgear, she still has her tadpole tail and has a no entry sign in her belly and forehead.
Chiroro and her sister, Karara, visited Dororo at his dojo in episode 121. She followed and irritated Viper who she thought was a transformed Dororo but she brought back his wonderful memories of his past. When Karara is taken hostage by Cool Big Brother Viper, Chiroro tells Viper how much she cares for Karara and does not want her to get hurt and her words reform Viper and Viper and Dororo work together to destroy Keroro disguised as Viper (for money) and rescue Karara while Viper leaves, promising to see them again.
Voiced by: Hidekatsu Shibata
The owner of the influential Dobaba Industries (similar to Nishizawa Corporation in Pekopon) and father of Karara and Chiroro. He demanded marriage for Karara who then left for Earth. He hunted her down and prepared to capture her until she escaped with Tamama while Dobaba never appeared again.
Voiced by: Junichi Sugawara
Debuts in episode 162. A childhood friend of Keroro, despite the fact that Joriri is clearly much, much older. Joriri is a faded green-grey Keronian with stubble and thinning hair, and prone to propping his foot up on something as he dispenses advice and life lessons from his years of experience. His symbol is a fat stylized capital J. After lending a subtle guiding hand to Chibi Kero and company, he reappears on Earth in the present time (looking exactly the same) and does pretty much the same thing - with the added bonus of freeloading some of the Hinata house's facilities.
Voiced by: Shōzō Iizuka
Mushishi is a blue-green elder Keronian who was once a legendary assassin known as "Insect User Mushishi." When he first appears, he pretends to help Keroro with a plan involving insects, but when Dororo arrives at the end of the episode, he reveals that Mushishi is retired and devoted to his hobby to collect insects from around the galaxy, making the platoon realize that they've been had by the old assassin.[22] He carries a bug-catching net and a pouch as well as a green bucket on top of his head that he also keeps bugs in.
Kiruru. was born from Mirara being sealed away with the real Kiruru, making him the Kiruru that was sealed away in the Invasion Timer. He is a tadpole version of his counterpart/father Kiruru but with a dot over the X mark. He is an incomplete version of Kiruru. Instead of absorbing the power of negative thoughts, this Kiruru absorbed the power of hesitation. He was released from the Invasion Timer and befriended the Keroro Platoon. But later, a Keron vessel released swarms of black Kirurus (AKA Kiruru X-52). After Black Kirurus took over, the black Kirurus gave X marks to Natsumi, Tamama and Dororo that turned them evil, while Kiruru. gave triangles to the others. He then takes control of the ship base that controlled the black Kirurus by using the power of hesitation that was massively produced by Keroro and caused them to disappear. Then he turned everyone else back to normal and Kiruru. left with the memory of his friends.
Voiced by: Toshihiko Seki
A highly ranked Keronian soldier who once assisted the Keroro Platoon in conquering Earth. He is purple. His helmet has headphones with a microphone attached. His symbol is an exclamation points, however the one on his chest is rendered upside-down, resembling a tie. He rarely blinks.
A robot substitute for Kululu. He was made from silver metal. He has rectangle-shaped magnet feet and has crescent magnets for hands. His symbol is a black dot with golden tracings.
A Keronian kunoichi. She is yellow. She wields a shuriken with a string through it and a summoning scroll. Her helmet has two ribbons. Her symbol is a crescent moon.
A Keronian guitarist. He is yellow. He plays an electric guitar. He has a mustache in the shape of lightning bolts. His symbol is a red guitar pick.
Hanana is a kind-hearted flower Keronian. She is a pink Keronian. She has a point above her mouth. She wears a large blue and orange flower on her helmet. Her tadpole tail is a leaf. Her symbol is a flower bud. She has one-sided love for Giruru. Her name trives from the Japanese word Hana, which means Flower.
Gururu is a green cow boy Keronian. He has a rope tied from his shoulder to his waist. He wear boots and a hat. His symbol is a Texan star.
Gororo is a yellow criminalized Keronian. He has yellow and black side burns. He has a lightning bolt across his chest and eyes. He commonly holds sticks of dynamite and panels of electricity. His symbol is a lightning bolt.
Eruru is an orange intelligent female Keronian. She wears glasses and a barrette and commonly carries a pen and notebook. Her symbol is an upward rectangle with a triangle on top.
Appears in episode 189. Cpt Jirara was the leader of the assassin squad that Dororo (then Zeroro) and Zoruru used to be in. His mastery of Keronian Assassin Magic is unparalleled. Went rogue and fled to Earth, seeking out Dororo for one final duel. He is outfitted in a top-to-toe black suit, with armored blade-arms like Zoruru, an assassin mouthpiece (minus the breathing valve in Dororo's old mouthpiece) and a mask with three glowing red eyes and a shuriken over his left eye. His symbol is a shuriken with diamond blades. Jirara's name is from Jiraiya.
From episode 220. Sababa settled on Earth during the golden age of Egypt, opening the possibility that the Great Pyramids were created through Keronian technology. Having evolved into a sand-based form after hundreds of years, Sababa has lost the ability to communicate in any coherent language, uttering 'sabarabara' at random, which leads Keroro to dub him Sababa. He wears an old and worn headgear, kohl around his eyes and a pharaoh hook in place of his right hand. His symbol resembles two triangles end-to-end, the lower one twice as large as the upper, which is decorated with two eyes (a possible reference to the familiar eye-on-a-pyramid symbol on the US dollar bill.) The name Sababa comes from sabaku, meaning desert.
Debuted on episode 228. Meruru is a member of Keron's official postal service, who comes to Earth to deliver a message for Keroro, which he tries to avoid receiving, thinking that it is a message from head quarters (but turns out to be a letter from Shipepe, Keroro, Giroro and Dororo's long time friend). Meruru is dedicated to her job to the point that she maneuvers her way around all of the platoon's attempts to detain her, including cloaking devices, guns loaded with capsules of sticky gunk, evasive driving and Tamama's farting (which Meruru isn't slightly bothered by and possibly likes). Meruru's symbol is an envelope.
Debuted on episode 230. An artificially made Keronian which befriended Zeroro/Dororo and soon after Keroro, Giroro & Pururu during their childhood and having a few adventures with them, such as scaring away some bullies. The bullies then mistake Kikaka for the escaped biotech weapon that the army's been searching for and plan to turn him in until the real weapon (a more modern Kiruru) shows itself and Kikaka wards it off. Unfortunately Kikaka then transforms into its true form, a simple doll (it is hinted that Kikaka was one of the first few tests of a much younger Kululu's Nanola)
Voiced by: Ken Narita
Debuted on episode 239. He has a crush on Pururu. He tends to describe his emotions through fruit.
Along with the broad cast of alien characters, the series also devotes much attention to the humans that these aliens encounter. The five main members of the Keroro Platoon each have a human partner with whom they share an especially strong personal bond with, which can vary from friendship to familial or romantic feelings. These partners are all teenagers (who in the anime attend Kissho Gakuen, a middle school in Tokyo) and have their own web of correlations.
Voiced by: Tomoko Kawakami (Ep 1 - 230, Movies); Houko Kuwashima (Ep 232 - 358) (Japanese), Leah Clark (English)
Fuyuki Hinata (日向 冬樹 Hinata Fuyuki)12 year old Fuyuki is a stereotypical nerd on the surface, Fuyuki is an oddity even within that scope, as his main interest is in the 'occult' - a term that comprises everything from the best known international mysteries (Stonehenge, the Bermuda Triangle, ghosts, UFOs, etc.) to the obscure, like the Seven School Mysteries (a grab-all term for haunted schoolhouses). A dedicated explorer and adventurer, Fuyuki sadly lacks the athletic skills required. Swimming in particular is a huge handicap for him, specially in contrast with his athletic older sister Natsumi. However, in the rare opportunities Fuyuki gets mad, it is enough to scare both Keroro and even Natsumi into submission. Despite his fascination with the paranormal, he does not have any spiritual sensibility, in contrast with his sister.[7] He is also scared of bugs.[22] However, he is a master teller of horror stories.[10]
Fuyuki's Keronian partner is Keroro, even though Keroro is supposed to be his enemy. The two do share a natural curiosity (Fuyuki is drawn towards the mysteries of the world, while Keroro is mystified by things most humans consider commonplace), as well as the strongest friendship of the five Keronian/human child pairs. He affectionately calls him 'gunso' or 'gunso-san', meaning 'sergeant'. His appeals to their shared friendship are enough to stop Keroro's plans more than once. Fuyuki is delighted by all the wonders he gets to see with the keronians and jumps feet first in many of their plans.
He created an occult club in his high school, of which only he and Momoka are the only members. However, he seems unaware of either Momoka or Chiruyo's crushes on him.
Voiced by: Chiwa Saitō (Japanese), Cherami Leigh (English)
Natsumi Hinata (日向 夏美 Hinata Natsumi)13 year old Natsumi is the powerful older sister of Fuyuki and the one in charge of the Hinata house when their mother is not home. A minor celebrity of sorts in her own school, she often gets pleas of help from classmates like Yayoi and Satsuki (below), due to her unparalleled physical skills. Feisty and genial, Natsumi is equally capable as a friend, a fighter, and a loving family member. She is very strict on Keroro and always doubts of his intentions, physically abusing him on several occasions (as well as treating him as a house slave), and never calls him by name, only snapping "Boke gaeru" ("stupid frog") at him whenever she has to. Inversely, her infatuation with Saburo proves to be her only weakness on several occasions. Unlike her brother, Natsumi is highly sensitive spiritually, feeling an "oppression" when ghosts are near.[7]
Natsumi's Keronian partner is Giroro, but theirs is the most unofficial as far as relationships go - while both relate to each other almost subliminally (from hot tempers and combative tendencies to a love for roasting sweet potatoes) and are close personally, Natsumi has no idea that Giroro has been infatuated with her since the day she first bested him in strategy and combat: an incident that involved her busting past his boobytraps armed with a leek, and taking him out with a bookbag to the head. In fact it is Keroro that Natsumi is more strongly connected to - their petty rivalries sit high above a deep, underlying current of mutual respect and concern that runs both ways.
Voiced by: Akiko Hiramatsu (Japanese), Jamie Marchi (English)
Aki Hinata (日向 秋 Hinata Aki) is the mother of Fuyuki and Natsumi Hinata and is the head of the family that Keroro lives with. Her exact age is unknown; however, she is believed to be around 35 years old.[23] Whether it is supporting a family of three on her own, making late night runs to the printing press on her motorcycle, or kicking aliens around every few weeks, it is common belief (at least to the Keronians) that Hinata Aki is the strongest woman on Earth. Despite her fear of animals, she feels as though the Keroro Platoon is her own family (due entirely to them being shiny and possibly slimy, as opposed to the furry nature of most animals). As a chief manga editor/designer, she finds the aliens' lifestyle very interesting and often has spells of obsession over them.
While Aki has no official Keronian partner (as none of the adults do), it is Kululu who has taken a special interest in her, to the extent of setting up a spy camera in her shower. Whether this is for the purposes of studying 'the most powerful human on Earth' or for the same reasons anyone would spy on her in the shower remains to be seen.
Voiced by: Hisako Kyōda (Japanese), Linda Leonard (English)
Akina Hinata (日向 秋奈 Hinata Akina) is the grandmother of Fuyuki and Natsumi. She, like Fuyuki, believes in paranormal activity in the form of forest spirits. She is aware of the existence of Keroro and the aliens.
Haru Hinata (日向 春 Hinata Haru) is Aki's husband and Fuyuki and Natsumi's father. He is never fully shown and is rarely mentioned in the anime. He is known to be constantly traveling the world, and it is unknown if he actually knows about the Keronians living in his house or about aliens at all. His own interest in mysteries around the world, like the Easter Island's Moais, seemed to inspire Fuyuki's occult obsession.
Voiced by: Haruna Ikezawa (Japanese), Monica Rial (English)
Momoka Nishizawa (西澤 桃華 Nishizawa Momoka) is a multi-billionaire 12 year old and lover and classmate of Fuyuki. She has a split personality, indicated in the anime by her Fawcett curls turning into spikes. While being a well-connected heiress who lives in an expansive mansion, Momoka views her extravagant lifestyle as completely commonplace and acts in a refined and timid manner for most of the time. Her other personality is much more aggressive and violent, emphasized by the aforementioned hairstyle and a rougher voice.
Despite being outgoing in everything else, Momoka is really shy when it comes to Fuyuki, and she is unable to confess her feelings to him. That drives her to concoct the most crazy (and expensive) plans to gain Fuyuki's affection, to be near him or to make him happy. As head of the Nishizawa Peach Group or NPG, there is very little that is beyond her capability, even if the final bill is truly astronomical. Though she has a private army of guards devoted to her safety and happiness and the highly advanced technology of NPG at her disposal, often her plans need the more advanced keronian technology or the collaboration of the platoon themselves, and she hires them for an enormous amount of money.
Momoka's Keronian partner is Tamama. It is mentioned in the anime that she found Tamama "on the street" and took him in, pampering him like a celebrity chihuahua (and leaving his platoonmates very jealous indeed), and the fact that both of them have a split personality is literally an astronomical coincidence. The two characters meet in episode 282.
Voiced by: Keiji Fujiwara (Japanese), Kent Williams (English)
Paul Moriyama (ポール森山 Pōru Moriyama) is the butler of Momoka. As Momoka's butler and full-time guardian, Paul does everything in his power to make her happy and protect her. According to flashbacks, a duel with Momoka's father Bayo Nishizawa resulted in Paul's current place as Momoka's caretaker. Tamama relates to him as a fellow martial artist, despite Paul being in a completely different league - not even the Tamama Impact can take down Paul, a notorious street fighter in his prime. Flashbacks to his youth reveal the young Paul to be based on Ken Masters of Street Fighter fame. Paul is most famously known as "The Mustache".
Voiced by: Shūichi Ikeda (Japanese), Robert McCollum (English)
Baio Nishizawa (西澤 梅夫 Nishizawa Baiō) is the father of Momoka and head of the world superpower-like Nishizawa corporation, of which Momoka's already-powerful Nishizawa Peach Group is a mere subsidiary. Baio trusts his daughter's happiness due to him living out of state, usually in a castle by a lake in Scotland. He tries to meet with his daughter, but he rarely accomplishes it. He is aware of the existence of the Keroro platoon.
Flashbacks to his youth reveal him to be based on Ryu of Street Fighter fame, also his older self looked liked Tony Stark from Marvel Comics Iron Man.
Voiced by: Yoshiko Sakakibara
Oka Nishizawa (西澤 桜華 Nishizawa Ōka) is Momoka's mother and Baio's wife. She has amazing fighting skills. She encountered Baio as her finalist opponent during a martial arts tournament. After the battle, the two fell in love, married, and had Momoka. When Momoka matured, Ōka had left the mansion to Momoka. She returns during Mother's Day and her abilities were tested.[24] In a later episode, Oka was capable of defeating Giroro and Dororo plus Kululu's battery of missiles unarmed, and only her husband proved to be a strong enough rival for her.[25]
Much like her daughter, Ōka has both a violent and gentle personality. Her gentle personality occurs when she is treated with love and she loses her violent outlook.
Oka's design is modelled after Chun Li of Street fighter fame, but she always shows up first in a thick brown cloak over her entire body, tossing aside anything that gets in her way, reminiscent of Kenshiro's return to civilisation in Fist of the North Star.
Voiced by: Akira Ishida (Japanese), Joel McDonald (English)
Mutsumi Houjou (北城 睦実 Hōjō Mutsumi) is 14 and is the eldest of the five main children. As a student, he skips class continuously and has a reputation for being somewhat of a trouble child. In truth, he is a mature, if mysterious, young man who has a hard time adjusting with his classmates because of his excellence in almost every subject (including academics and athletics). He hosts a popular late-night radio program which Natsumi compulsively listens to. Mutsumi is the least active main character of the series, but plays a significant role as Kululu's partner/friend, Natsumi's unrequited crush, and probably the most intelligent human character.
Through a chance encounter with Kululu at school, Mutsumi not only met and rescued him from a battle gone awry, but also acquired his trademark weapon: a virtual reality pen created by Kululu that can create anything on any solid surface, exclusively for himself. In the anime he uses the name Saburo (サブロー Saburō) in public life, and his identity as Mutsumi is only used in his radio show; his true identity is kept secret to the public. Unlike the other four Keronian/human child pairs, his relationship with Kululu is particularly distant, though they understand each other perfectly - Kululu may consider Mutsumi his only intellectual equal and vice versa, but he lives in his lab beneath the Hinata house instead of Mutsumi's home, thus shrouding Mutsumi's personal life in even more secrecy. However, Kululu seems aware of the fact that Mutsumi and Saburo are the same person. Mutsumi's name comes from a Japanese wordplay (Saburo means 326, and Mutsumi means 623).
Mutsumi had previously appeared as a radio talk show for teens host in the anime Seven of Seven.
Voiced by: Ryō Hirohashi (Japanese), Luci Christian (English)
Koyuki Azumaya (東谷 小雪 Azumaya Koyuki) is a kunoichi who enters Natsumi's school as a transfer student. Drawn to Natsumi by what she only refers to as a "familiar scent", the two girls soon become best friends. While she does wear her civilian clothing when in public, she always keeps on her ninja uniform in case of an emergency. Her skills as a civilian and a ninja are exceptionally outstanding and her athletic ability even rivals that of Natsumi, making her one of the most physically powerful characters of the series. Despite having amazing powers and a troubled and strict past, Koyuki is very carefree, optimistic, and eccentric, but believes in what is right and protects her friends with all her might. Unfortunately, her tendency to utilize her ninjitsu maneuvers to accomplish the most mundane of tasks often draws much unwanted attention.
Koyuki's Keronian partner is Dororo. She finds and rescues a stranded Zeroro (now Dororo) from a bear trap and teaches him the ways of the ninja, which unwittingly leads to the dissolving of her ninja clan, giving her a chance at a real life in the city. Sharing many interests and the same positive attitude, Dororo and Koyuki have the most stable and cohesive relationship of the five Keronian/human child pairs. He trusts Natsumi to teach Koyuki to live a modern life.
Koyuki has a crush on Natsumi, though that is more evident in the manga than in the anime.
Voiced by: Chinami Nishimura (Japanese), Alexis Tipton, Lisa Gonzales (English)
Chiruyo Tsukigami (月神 散世 Tsukigami Chiruyo) is an intelligent and meticulous class-mate of Fuyuki. She is part of the Kishou Gakuen Shinbunbu or KGS, the school news club, and started out observing Keroro and Fuyuki's activities from a comfortable distance. Like Momoka, she has a crush on Fuyuki and is equally shy about her feelings toward him. She's obsessed with writing down in her notebooks all her observations about Fuyuki.[26]
Chiruyo later befriends Pururu, who helped her get closer to Fuyuki. Though they do not live together, they share a good friendship.[26]
Voiced by: Asuka Tanii (Japanese), Colleen Clinkenbeard (cat form), Brittney Karbowski (human form) (English)
Ms. Furbottom is Giroro's pet whitish pink cat that he first found in the rain. She accompanies Giroro in his tent. She loves Giroro from then on and rivals Natsumi because of it. She sometimes unknowingly turns into human using one of Kululu's inventions. She quickly becomes Giroro's friend and became his pet after the Garuru Platoon's departure. Her human form bears a distinct resemblance to Cammy White of Street Fighter fame.
Voiced by: Megumi Toyoguchi (Japanese), Tia Ballard (English)
Melody Honey is a famous pop star from America that appears in the most unlikely places. She likes all kinds of jokes, even the boring ones. Previously appeared in Seven of Seven and Arcade Gamer Fubuki, also by Mine Yoshizaki.
Voiced by: Chie Matsuura (Japanese), Trina Nishimura (English)
The Ghost (お観世 Omiyo) of the Hinata household, also known as Spirit-chan (幽霊ちゃん Yūrei-chan), is a ghost living in Keroro's room. Aki bought the house for a low price because of that. She was imprisoned because she hid a Keronian (thought to have been a Kappa) with similar characteristic as Keroro. She was later rescued by that Keronian and died when she was 90 years old. Much like Dororo, Omiyo does not like to be forgotten by those around her (she even goes into Dororo's 'trauma switch' pose in episode 6), and her attempts at grabbing attention finally lead up to an aggressive manifestation in episode 39, where her true story is revealed. In volume 14 (and anime episode 178) she introduced herself as "Omiyo" to Momoka after she turned herself into a ghost to get closer to Fuyuki.
Voiced by: Asuka Tanii, Ema Kogure (Japanese), Kristi Bingham (English), Voiced by: Chie Matsuura (Japanese), Kate Oxley (English)
Yayoi Shimotsuki (霜月 弥生 Shimotsuki Yayoi) and Satsuki Shiwasu (師走 五月 Shiwasu Satsuki) are two of Natsumi's classmates, her best friends long before Koyuki's debut; this relationship has led them to come very close indeed to discovering the Keroro platoon's existence on several occasions. Yayoi leads the school drama club with the passion of a thespian; and Satsuki, the more physically adept of the two, is in the swim team. They seek Natsumi's assistance in assorted school assignments, from stage presentations to sporting events, on a regular basis. In one episode Yayoi and Satsuki get to meet Keroro. Yayoi gets a little crush on Giroro for one episode.
Voiced by: Hiro Shimono (Japanese), Mike McFarland (English)
Masayoshi Yoshiokadaira is one of the hundreds of faceless black ops agents in the Nishizawa Peach Group. Only two things distinguish Masayoshi Yoshiokadaira from them: his awkwardly long name, and his tendency to be thrust into prominent roles during Momoka's get-close-to-Fuyuki plans, such as 'eloping' with her in episode 98. It's not until episode 248 that Yoshiokadaira gets a storyline in his name.
In Keroro's childhood memories, the Nontolmas (ノンテルマ Nonteruma) are what Keroro's grandfather used to refer to earthlings. They were actually a race of beings that live at the bottom of the ocean, building an undersea empire long before humans evolved. The Keroro Platoon met them when they were in the ocean. They consist of multiple Anomalocaris, an ancient White Shark (Possibly Megalodon) with red eyes within its mouth and a mermaid who Fuyuki befriended.
Voiced by: Keiji Fujiwara (Japanese), R. Bruce Elliot (English)
Despite his voice being heard in every episode, it is not until episode 40 that the Narrator appears as an on-screen character (although the recurring breaking of the fourth wall means that the regular characters already recognise him as such.) He is dressed as a Kuroko or kabuki stagehand, wearing a ninja-esque outfit with a black veil instead of a mask (made famous most notably by the referee in the video game Samurai Shodown) but with an additional capital N emblazoned on the veil. His appearances on the show may be few and far between, but he gains a lot more exposure upon appearing in the 8th title sequence.
Voiced by: Naoki Makishima, Kumiko Watanabe (young) (Japanese), Z. Charles Bolton (English)
Zeroyasha was shown in episode 98 and 68 in Koyuki Azumaya's memories. He is a ninja hound and a rival/friend of Dororo. In the anime, he was the one who found Dororo(Zeroro) trapped in the woods. It is seen that he is incredibly smart and athletic, being able to outwit the Keroro Platoon (Minus Dororo and Kululu) and play catch with Dororo for a week straight. It is not stated, though, that he is either Mukuro's, Koyuki's, or lives by himself since he is considered on the same level as them. But it mostly leans to being Koyuki's.
The Angols are a group of alien race that their main purpose is to destroy a planet as their tradition to their race.
Voiced by: Mamiko Noto (Japanese), Carrie Savage (English)
"July 1999. The Queen of Terror descends from the sky and Angolmois awakens."[27]
Angol Mois is the "Queen of Terror", who is ditzy and insecure as a result of her impact from space. She was sent to planet Earth to arrive in July 1999 for Earth's destruction, as predicted by Nostradamus, under orders from her father. She states that during her first appearance she told Nostradamus to deliver a message to the humans warning them of her arrival. In the anime, she arrives 500 years too early and takes a nap in orbit, until she wakes up in 2004, 5 years too late.[28] In the manga, she lands near Fuyuki, while in the anime, she lands on Giroro's tent (and on top of Giroro, who was inside). In both, she is taken into the Hinatas' home, where she is nursed back to health by Natsumi. When she wakes up, she reveals her true form and starts to destroy the Earth, until Keroro, who arrives later, is persuaded by Fuyuki (who reminds him that if Mois destroys Earth, there would be no more Gundam models) to stop Mois.[28]
Although the Lord of Terror, she is anything but terrifying. She's sweet, clumsy, and peppy, with no malice whatsoever but can be scary when she gets her Lucifer Spear out. The Lucifer Spear, which she only can use while in her true form, is a terrible weapon that could, at its fullest power, completely destroy Earth. She usually uses only an infinitesimal part of its power to destroy things. The Lucifer Spear also doubles as a cell phone, which Mois keeps in her pocket. The weakness of the Angol is a mineral called Angolnite, that neutralizes her powers. She keeps a crystal of Angolnite hidden in her room just in case.[29]
She is close friends with Keroro, since the sergeant used to play with her when she was a child.[28] She calls Keroro oji-sama, which means, roughly, "uncle". She is in love with him and dreams of being his girlfriend, though Keroro seems oblivious to it. Tamama, however, considers her his rival and often competes with her for Keroro's attention (and affection), though most of the time Mois don't ever realizes she's competing. Often, also, her pure heart puts Tamama to shame without even realizing it, an unconscious weapon that also works against the cynical Kululu. Her main goal is to make Keroro happy, something Keroro takes sometimes advantage of to make her do his cleaning work in his place, and she also works as part of the platoon as communication's officer and overall helper. She lives in a room at the platoon's underground base.[30]
In her true Angol form, she is a pale gray-haired, brown-eyed girl who wears a purple, yellow and white costume. However, to blend in with the Earth people, Mois transforms into a tanned, bleached-blonde teenager (kogal) who is always seen in a school uniform and loose socks. She got her Earth look from when she first arrived, not long before she met the Hinatas. In the manga, her father had encouraged her to see only herself as important as this frame of mind was needed to become an effective planet destroyer. Thus, she chose the form of a Japanese school girl she saw ending a friendship with another girl for her own benefit. In the anime, she chose the form of a girl who was fighting for her friends, thus becoming her "inspiration."[30]
Her transformation sequences, stylized costume, and related accessories may make her a parody of the "magical girl" genre. As an added note, Mois's Pekopon-form wears a hairclip explicitly in the shape of the Science Patrol's meteor-mark in the anime (while Asami, the girl whose form/soul she "borrowed", has an Ultra Garrison-mark hairclip). Her name is frequently used in puns on the Japanese phrase moe-moe, which usually refers to a cute girl who appeals to older members of the audience.
In the English manga, her name is "Angol Moa".
Voiced by: Nobuaki Kakuda (Japanese), Cole Brown (English)
The father of Mois. Like his daughter, he is very kind hearted until he is called to destroy Earth.
Although she is not an heir of King of Terror, she got the power to punish planets. At the end of Manga Volume 13, it was revealed that Mois's mother was the main reason why dinosaurs became extinct on Earth. In Volume 14 her name was revealed as Tia.[29]
In the game Soulcalibur IV a character named Angol Fear appears, designed by the same creator of Sgt. Frog and is revealed to be Angol Mois's cousin. Fear plays a similar role to Mois as a judge over the earth and executor of its people. Fear uses a black version of Mois' Lucifer Spear and appears in Chapter 148 of the manga to confront Mois over her constant failure to destroy Earth.
Voiced by: Nobuyuki Hiyama (Japanese), John Swasey (English)
Kogoro is the childhood friend of Keroro and a space deputy. He loves colored boxes (and collects them). His height is 177 cm and his weight is 77 kg. Kogoro seems to be always energetic, the same vitriol-laden smile affixed on his face while he laughs and stares into space (even when he's been knocked unconscious - he does stop laughing though), although only his younger sister Lavie can actually read the feelings of Kogoro. He and his sister first appear in volume 6, chapter 46, of the manga and the 24th episode of the anime.
He is likely a parody of the character Gavan from the Metal Hero Series Space Sheriff Gavan. It only takes him a splitsecond (0.003 nanoseconds in the anime) to transform with his suit (This also is a parody of the length of time it takes Gavan to transform, although Kogoro's transformation merely requires him putting on a helmet).
Voiced by: Tomoko Kaneda (Japanese), Leah Clark (English)
Kogoro's sweet natured younger sister who wears rabbit ears. Because Kogoro never gets any work, she supports by working various part-time jobs. There is a character from the anime Mado King Granzort with the same name and is a long ears race person (presuming that she's kind of a reference to him) who is a primary character in the Granzort Series. Apologising for her brother's behavior (sometimes unnecessarily) has become a recurring habit of hers. Much like her brother Kogoro, Lavie is also a parody of the character Annie, a female partner of the eponymous character in Uchuu Keiji Shaider.
In the English manga, her name is "Rabbie".
Voiced by: Juri Ihata (Japanese), Caitlin Glass (English)
Sumomo is a member of the Axolotl, a race based on newts in the same way the Keronians are based on frogs. In the manga, a young girl finds Sumomo. Sumomo immediatally falls in love with Fuyuki Hinata and tries to "kiss" him by wrapping her tongue around him, because she does not know Earth's customs. The young girl's father finds Sumomo, and like Keroro, was converted into a comic book character.
However, in the anime, Sumomo is a pop singer of space. She can even change her form into human. Like the comic book, she does not know Earth's customs, but Natsumi and Fuyuki help her. Sumomo's song at the end of the episode is "Beloved Shooting Star".
Voiced by: Akiko Yajima
Alisa is an undead being/toy doll who feasts on UMA alien to gain life energy. her adoptive father Nebula, was the alien which tried to give the life energy by absorbing it for what they call "dark race", the "prey" that they captured would usually being locked in a box. The first time when this character was seen in episode 133, which she captured the Keroro Platoon, and "kidnapped" Fuyuki, but befriends with Keroro and the others later. Her second appearance was in episode 141, and appeared some more after that. She was being shown on the Keroro Movie 5, Keroro Unlimited Transformation, Miracle of the Island of Time.
Voiced by: Keiji Fujiwara (Japanese), Christopher Bevins (English)
A yellow space plant that loves humidity. It loves to absorb the humidity of any super wet objects (or aliens). Keroro is always sucked by Nyororos every time he gets super humid. However, some aliens use Nyororo as a reducing-weight tool (Putata of the Shurara Corps and Kululu are known to rear their own Nyororo for their own purposes).
A brown monster with many tentacles. The Garuru Platoon used them as weapons in the invasion of Earth. This kind of Nyororo doesn't seem to have the ability to absorb humidity.
Tamama. It reproduces by releasing crumbs that grow into mini-creatures about 1 foot wide (juvenile form) overnight.
A yellow octopus that has a big eye and big lips. It is used in the show to save Momoka from drowning. Momoka believes that the lifeopus deposited an egg or eggs inside of her, and the Narrator confirms this.
it appears in the next episode as being caught off the coastline by fishermen.
A giant monster with 3 heads and the ability to recover itself. Its liver is said to be able to heal anyone from any diseases. Giroro once fought one to get its liver so he can save Natsumi.
Voiced by: Nobuo Tobita (Japanese), Chris Patton, Charles Campbell, Jerry Jewell, Eric Vale, Ryan Roach (English)
Each member of the Viper Family is outfitted with a red jumpsuit, black belt, and right hand blaster. Variations of Viper and the Viper family can be seen in the Viper Wedding, Episode 74 "Surprising - Keroro Special Version, gero gero 30 minutes, 15 stories".
The first Viper who fights the Keroro Platoon because of a war between the Keronians and the Vipers, and was defeated by a technique used by Dororo. He reappears in Episode 121, where he appears as a cyborg who takes revenge on Dororo, but ends up capturing Chiroro and hides in Alien Street from the Space Police and the Keroro Plantoon. To keep himself from being spotted, he disguises himself as a chef in a ramen stand. When Keroro disguises himself as Viper and captures Karara in an effort to earn money, Viper takes off his disguise and attempts to defeat the fake Viper, proving that he does have some good in him. Viper's cyborg appearance is very reminiscent of Freeza, of Dragonball Z fame, when he became Mecha Freeza. His left half has been completely demolished and replaced with mechanical parts, his left eye is green and has a yellow scope as its pupil, a black tube appears on his head and leads to the back of his head, and the buster arm he had before has now been replaced with a mechanical claw. He has a son that was taken away by his ex-wife who he taught a technique on how to make the Tokyo Tower out of cherry stems.
The older brother of Viper. He kidnapped the Keroro Platoon and was defeated by Dororo. He soon enlarged himself but he was scared off by a larger Keroro due to the Flash Spoon.
One of the relatives of the defeated Viper. He formed a group of Vipers and stole a ring which is the clue of treasure. He was later captured by Jessica.
A kind Viper that Keroro, Giroro and Zeroro met when they were young. He gave clues of the hidden treasure in a deserted planet to Keroro.
Voiced by: Bin Shimada (Japanese), Christopher Ayres (English), Voiced by: Hikaru Midorikawa (Japanese), Greg Ayres (English)
Known as the Sentimental Consultants, they are the MCs of a popular show. 3M is the tall one with a head shaped like a chestnut; R Grey is the short one, looking just like the stereotypical Roswell alien (hence the 'Grey'). They once visited the Earth, but they were soon attacked by Giroro, who mistook them as the impostors.
Voiced by: Daiki Nakamura
Created by Keroro upon learning that Natsumi was afraid of slugs, Wettle King is a common slug evolved by Kululu into a humanoid being who resembles a green Ultraman with tiny eyes and feelers on his head. Though he has 1000 times the strength of a normal slug, he was still quite weak, but his attacks worked against Natsumi because she was so much revolted by his viscosity. Fuyuki, however, was able to defeat him with a finger. Unless he's in an ambiance with very high humidity, he can only fight for 4 minutes and 44 seconds before he has to recharge himself with water. Despite Keroro's intentions, Wettle King's spirit of righteousness forbade him from harming Natsumi, and he flew off into deep space in the end to find someplace where he could be useful, until his powers were needed once again.[31]
In episode 215, Wettle King returns with the additional ability to disguise himself as Tohru Uetsu, a motorcycle-riding, smooth-talking (and incredibly clumsy) photojournalist, along with playing a trumpet during his entrance scene, he is reminiscent of Hayato Icimonji, the second Kamen Rider and his costume was a parody to Ichiro of Kikaider 01.
The design of Wettle King is a parody of the classic tokusatsu series Iron King. While in the manga, his appearance is a parody of Ultraman, which he is referred as "Wetraman".
In episode 215, Keroro creates a new batch of seven Wettol Kings, easily differentiated from the original by their differently-colored gloves and boots, along with matching scarves, a deliberate parody of the Shocker Riders from Kamen Rider. Sent to attack Natsumi, the clones wind up facing off with the original Wettle King, who awakens their righteous spirits and turns them into his allies. Together, the eight Wettle Kings are a deliberate send-up of the recent Ultraman movie, '8 Ultra Brothers'.
Voiced by: Emi Shinohara (Japanese), Lydia Mackay (English)
A Space Policewoman. As an officer of the galactic version of Interpol, she is highly skilled and outfitted with advanced weapons and equipment. With the help of Keroro Platoon, she was able to capture the wanted Viper.
Voiced by: Miyuko Omimura (Japanese), Maxey Whitehead (English)
One of the Space Policewomen. She always shows up just before Keroro Platoon successfully conquered Earth every time. She can travel anywhere instantaneously through the use of space portals. She ends most of her sentences with "poyo." It's revealed that Poyan is her subordinate.
Voiced by: Asuka Tanii One of the Space Policewomen. She is currently stationed at the Aliens Street to prevent any human realizing the existence of aliens.
A scout from the moonlight special squad, an ally of Keron. She tested Koyuki and asked her if she would join the moonlight squad. She decided otherwise when she found out that Koyuki had a best friend on Earth.
A giant crocodilian like animal that can feed itself by eating the banana from the banana trees grown on its back. It is also one of the biggest fears of Keroro, as he can't resist stepping on the banana peel after a bananawani has eaten a banana. Wani translates to crocodile.
Voiced by: Hideki Fujisawa (Japanese), Christopher Sabat (English)
Voiced by: Chō (Japanese), Eric Vale (English)
An impostor of Dance Man who claims that the dance man is an imposter of him, he is a popular singer who wears an afro too. While his fame is derived entirely from the fact that the katakana for his name is easily confused with Dance Man's, and his act consists entirely of telling the truths about himself and his lifestyle (and not much actual singing), he is still considered a bona fide intergalactic idol by Keroro and company. The afro of Dance Master can absorb and reflect any attacks. Whenever the concert ticket of Dance Master is torn, Dansou Maso himself will be summoned. He can also fire laser beam from his glasses to give an afro hairstyle to whomever it hits. The only way to damage him is to use scissors to cut his afro or sing better than he can.
Debuts in episode 114. The younger sister of Dasonu Maso. She learnt that Keroro Platoon is a team full of comedians from Dasonu Maso so she went to observe Keroro Platoon. Keroro, who was trying to prove her wrong, started invasion immediately, but they all failed in comedic ways.
At the end of episode 114, Dasonu Maso turns her long blond hair into a black heart-shaped afro, which she keeps for all her future appearances.
From episode 132. Chuuton is one of five identical trainee assassins, from an alien race based on bees just as Keronians are based on frogs. They take orders from a wall-mounted falcon symbol with a blinking red light - this, combined with their appearance, references the evil organisation Shocker and the Shocker Riders from Kamen Rider.
An evil alien that likes to possess the others body and eat as much as he can. According to the Space Law, the possessed one is responsible for paying the economical loss caused by 303.
With a head shaped like a lava lamp and a two-colored skin tone split down the middle, these members of the Events Alien race are commonly seen in charge of galactic television stations.
Voiced by: Kumiko Watanabe (Japanese), Colleen Clinkenbeard (English)
Debuts in episode 66. The catgirl-looking voice actress of Space Captain Geroro (galactic dub), named after the real life voice actress for Keroro Gunso. She was often seen in scenes with a lot of aliens.
A kind of tiny humanoid invader. Super Dali love to invade unhealthy teeth and build a headquarters on them. Keroro's molar was once invaded by Super Dali. In episode 10 the Super Dali are led by a Dali Queen, 100 times taller than her minions, and resembling the Succubus from Warcraft 3.
In Episode 218, Dasonu*Maso mutates a colony of Super Dali into the afro-coifed Super Daso, making them powerful enough to not only beat the Keroro Platoon, but take them prisoner.
A gigantic invader which is 2000 m tall. Any planets targeted by him have no chances to survive from his mad collecting habit. As he was moving to Earth, all aliens except Keroro Platoon left the Earth. Keroro Platoon attempted to fight him but get beaten and forced to return to the Earth. At the same time, Angol Moa found an ancient weapon in Aliens Street. Keroro Platoon, with their human partners and some aliens led by the Space Police used it to fight ZZZ but failed to damage him even with the attack from Garuru's Platoon. Angol Moa dropped a space banana peel and Keroro went to step on it and the peel flew to ZZZ's feet. ZZZ slipped and was defeated when he flew to the Sun caused by the slip.
Voiced by: Yui Aragaki
Mirara is a Keronian who sealed Kiruru. She was released, along with Kiruru, when Keroro and Fuyuki breaks the orange crystal where they were sealed in. She is a pink Keronian tadpole with a brace and bell holding two locks of her hair and wears a pink robe with a red O symbol. She uses a giant mecha similar to the three in Episode 28 to travel and she can control O marks just as Kiruru can control X marks. After replacing Keroro and Fuyuki's X marks with O marks, she turns into a key. She and Kiruru were sealed away when Keroro and Fuyuki pressed her into a slot in a giant orange crystal in the heart of Kiruru's pillar. The capturer of Kiruru. She can absorb positive energy and turns into a key that can seal Kiruru away.
Voiced by: Ogi Yahagi
The main villain of the first movie who was sealed away with Mirara in tower form. Kiruru is a Keronian war machine that went on an uncontrollable rampage millions of years ago but was sealed away in an orange crystal by Mirara. He feeds on negative energy. His design is a white Keronian that wears golden bracelets and has a Keronian soldier helmet-like head with a black bottom jaw and belly. He has a red X on his forehead, much like the placement of Keronian emblems on their hats. He attacks by flying through the air and giving people an X mark on their body. This allows them to telepathically communicate and give more X's, but Kiruru powers himself using their negative emotions and the victims eventually only think about negative thoughts. Then, once he obtains enough power, he transforms into a more powerful form, which looks like a large beast. In this form he has no legs, instead he has a long, thick tail and moves around with his two hands. This form and the next are impervious to damage and generate a strong paperlike substance from its limbs to cover up large expanses of land. After collecting even more negative energy, Kiruru transforms into a tower and begins cloning his first form. The clones fly in a X formation until they attack, when they swarm around their unfortunate victim. He was defeated when the Hinata's and the Keroro Platoon's friendship removed their X's and Fuyuki and Keroro placed Mirara into the orange crystal, sealing away Kiruru once again.
Left behind in their undersea home by an ancient Maron alien army after an unsuccessful invasion, Meru and Maru appear to be squid-based in the same way the Keronians are based on frogs. They appear in vol. 20 of the manga.
Voiced by: Hoko Kuwashima
Meru is prince of the Deep Sea, destined to marry Natsumi Hinata, whom he claims to be his princess. Growing up with no memories of his childhood, family, home, nor race, he and Maru (マール Maaru) as his servant develops a second childhood, filled with loneliness. Meru is dark blue Maronian, He has a sword-like horn on his helmet and another one behind is smaller and small, pointed ear flaps, he has narrow green eyes whereas Maru is pink, he's always seen wearing a yellow collar around his neck and white pointed belly with a yellow Maron star, he also has dorsal-like fins attached to his wrists and limbs, Meru has a salamander-like stubby tail unlike Keronian's appearance. One night, Meru and Natsumi the kingdom's sacred weapon to uphold their titles with the Mer Ball, a weapon that resembles the Kero Ball. Kululu then reveals that Meru and Maru came from Maron, a planet of water, and Meru would eventually flood Pekopon to become his world. They were saved by the Keroro Platoon together with Fuyuki and Momoka. With the corrupted Mer Ball forever out of the wrong hands, Meru and Maru ultimately fall in love and wish their friends farewell as they start a new life on Maron as prince and princess.
Voiced by: Nozomi Tsuji Maru is a "childhood friend" and assistant of Meru. They have been together for as long as they can remember. Maru is a light blue Maronian, she almost looks similar to her counterpart, Meru except she has a shorter horn and another one behind is shorter on her helmet and longer flaps, she's always seen wearing a sky blue pointed dress with a pink Maron star on her chest and yellow lines below her dress, her eyes are larger and pink, like Meru, she has dorsal-like fins attached to her wrists and limbs and a stubby tail. Unlike Meru's face color, she has sky blue face match to her dress and abdomen (It was clearly seen below her dress while she's standing in front of the Ferris wheel).
Groups of giant creatures that were created from the Mer Ball by Meru. They were used to capture Natsumi and also to guard the palace. When the platoon went to get Natsumi back, they were held back by the Nightmares, but they managed to defeat them.
A young male Keronian who is with Kululu when he finds the Kero Ball outside of Chibi Kero's hideout. He is a grayish-purple in color, wears a periwinkle hat, and has a bandage over his nose. Shupepe wears blue-rimmed headphones similar to those that Kululu wears as an adult. His symbol is a bandage that is blue on his belly and white on his hat. He is voiced by an uncredited child fan.
A young female Keronian who is also with Kululu when he finds the Kero Ball. She is pale orange in color, wears a pink hat with a red bow on the right side. Her symbol is a bow that is orange on her belly and light pink on her hat. She and Shupepe leave Kululu behind when he becomes more interested in the Kero Ball. She is voiced by an uncredited child fan.
Voiced by: Yui Horie
Appears in the third movie. She was released (accidentally, by Keroro) from imprisonment in a crystal chamber deep in the ruins of Macchupicchu in Peru. Dark Keroro recruits her into his fledgling platoon, where she turns system operator of his massive battlecruiser. Sharing Pururu and Sumomo's ability to disguise herself as a human, she assumes the name Nazca and lures Fuyuki into a trap. At the end of the movie, Miruru is revealed to have the same role as Mirara in the first movie, intended this time for sealing Dark Keroro.
Voiced by: Kumiko Watanabe
The main villain of the third movie. Looking almost exactly like Keroro, he is in fact a newly-uncovered Kiruru in the mountaintop city of MacchuPicchu in Peru, grown from a sample of Keroro's DNA taken off the Kero Ball (during the same occasion where Miruru awakened). He leads the other Keronian manifestations, Shivava and Doruru.
At the end of the film, Miruru sacrifices herself to seal the Kiruru half of Dark Keroro, putting an end to his malevolent intentions. Rid of his violent ambitions, Dark Keroro makes up with his counterpart and heads off into space to try to conquer a different planet. However, his plans are thwarted by alien look alikes of Fuyuki and Natsumi in an intentional parody of the start of the series.
Voiced by: Minami Takayama
Shivava is a stuck up Keronian who thinks of himself as the "main character." He left Keron because it was "too small" for him and joined forces with Dark Keroro and Doruru. He is rivaled with Tamama, who cannot stand him, but ultimately loses to him and Momoka when they gang up on him.
Voiced by: Rū Ohshiba
Doruru is a member of Dark Keroro's Keronian manifestation empire, alongside Dark Keroro and Shivava. Giroro remembers him as one of his old brigade's fiercest soldiers. In the end, Doruru is defeated with Giroro and Natsumi's combined efforts.
Voiced by: Nana Mizuki
Félicia Shion du Dracoon, called Shion by Momoka and her friends, initially felt alone for much of her life. Through an heirloom she inherited when her parents died, Shion learned of the Earth Dragon prophecy. She sets the events of the movie in motion by turning Tamama, Giroro, Kululu, and Dororo into dragons as part of a warrior program. Eventually learning a secret in the spellbook she used, and learning that she is not alone, she helped to stop the Earth Dragon.
Voiced by: Ikue Ōtani
The Earth Dragon who awakens once every 5000 years to recreate the world, it was eventually held back by the Keroro Platoon, who were then turned to dragons by Shion and made to its servants. Sion eventually reasoned with it, giving it the name Terara. Terara transferred all of it energy back to Earth. A piece of the Earth Dragon is eventually born at the end of the movie, it is Terara in a Keronian tadpole form.
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