List of Marvel Universe characters: O

O

• O
• O-Force
• O'Brien, Randy
• O'Grady, Eric (Ant-Man)
• O'Meggan, Alfie
• O'Sullivan, Solomon
• Obituary
• Obliterator
• Oblivion
• Obnoxio the Clown
• Obsidian
• Occulus
• Ocean
• Ocelot
• Octavius, Otto (Dr.Octopus)
• Odashu, Gengi (see Gengi Odashu)
• Oddball
• Odin
• Officer Coyle
• Offset
• Ogord, Aleta
• Ogre
• Ogre (Paul Ebersol)
• Ogress
• Ogun
• Oktober
• Old Lace
• Old Skull
• Oliver, Frank (aka Kangaroo)
• Omega
• Omega Red
• Omega the Unknown
• Omerta
• One Above All
• Oneg the Prober
• Onslaught
• Onslaught (Imperial Guard)
• Onyxx
• Ooze
• Operator (Ultraverse)
• Opsidian
• Optoman
• Oracle
• Orator
• Orb
• Orbit
• Orchid
• Ord
• Ord Zyonyz (see Gardener)
• Orikal
• Orka
• Ororo Iqadi T'Challa (née Munroe, aka Storm)
• Orphan
• Orphan-Maker
• Ortega, Armena
• Ortega, Ishmail
• Orwell
• Osborn, Harry
• Osborn, Liz Allan (see Liz Allan Osborn)
• Osborn, Norman
• Osborn, Normie
• Oscar Depanini
• Oscar McDonnell
• Oshtur
• Osiris
• Osprey
• Oswald
• Otomo
• Otto Octavius (aka Doctor Octopus)
• Outlaw
• Outlaw Kid
• Overdrive
• Overkill
• Overlord
• Overmind
• Override
• Overrider
• Owen Reece (aka Molecule Man)
• Ozone
• Owl
• Ox
• Oxbow
• Oya
• Ozymandias