CHARACTERS
O
These profiles represent (for the most part) individuals. Certain collective beings may be found here as well. Heroes and Villains, Cosmic entities, and civilians are the major examples.
O (MI-13 quartermaster, Captain Britain & MI-13 character) - by Loki
Oa the Living Planet of Earth-9602 (Amalgam character)
Oak (Warpies)
Oakland (Thor character)
Obar (Magneto's mutates)
Obb (Deadpool character)
Obeahman (Hellstorm character)
O-Bengh (possibly Cagliostro)
Ober, Wally (window washer, saved by Llada) - by Grendel Prime
Ober, Walter (great-grandfather of Wally)
Oberbeck, Tristam (Blacklung the Malady Man, All-Hate Squad)
Oberlin, Randy (Iron Fist character)
Obituary (O-Force)
"Obi-Wanna-Be" (Charlie Weiderman)
Obliterator (Elder of the Universe, Silver Surfer foe) - by Norvo
Obliteron (dark Celestial, Final Host member) - by Proto-Man
Oblivion (Iceman/Quasar foe) - by MarvellousLuke
Oboroth (Inhuman, X-Men foe) - by Chadman
O'Breen, Fergus (Glorianna's father)
O'Breen, Glorianna (Foggy & Daredevil ex-girlfriend) - by Chadman
Obrien (Broodlings of Chthon)
O'Brien (WWII-era FBI agent)
O'Brien (Daredevil character)
O'Brien, Jeff (NYPD, Sir victim)
O'Brien, Matthew (Hangman foe) - by Prime Eternal
O'Brien, Randy of New Universe (DP7, Antibody) - by Prime Eternal
Obsession (Dusk)
"Obsidian" (Guerreros del Sol, Scarlet Spider/Hummingbird foe)
Ocam the Watcher (Quasar#16)
Ocar (philosopher, Pre-Cataclysmic Atlantis)
Occidental (They)
Occult (Peeper, Resistants member)
Occultist (Spider-Man foe) - by Minor Irritant
Occulus (Fantastic Four character)
Ocelot (Warpies)
Ocelot (O-Force)
Ocean (O-Force)
Ochelo, Samalie (Muties character)
O'Connell, Dr. Jeannine (Project: PEGASUS)
O'Connell, Maire (sorceress, Magik ally) - by Markus Raymond
O'Connell, Taryn (U.S 1 character)
O'Connor (Corporation)
O'Connor, Gilbert (Accutech)
O'Connor, Harry (Ghost Rider (Blaze) character) - by Proto-Man
O'Connor, Miss (Namor character)
O'Connor, Teresa of Earth-98120 (Estigma)
Octavius, Dr. Otto
Octobliterator (extradimensional octopod, Squirrel Girl character) - by Chadman
"Octo" Doctorpuss, the Cat o' Nine Tails of Earth-7840 (humanoid animals)
Octodroid (robot Dr. Octopus creation, Marvel RPG) - by David Lawrence
Octo-Monster (Lizard Men) - by Prime Eternal
octopus of Swampland of Terror (Lorna foe)
Octo-Sapien (Hulk foe) - by John Kaminski
Octo-Spidey of Earth-11983 (Peter Parker) - by Proto-Man
Oculist (Blaze character) - by Markus Raymond
Oda (Marvel Italia, Lords of War)
O'Damia, H.R. (Sparrow, Underground Legion)
O'Day, Bubbles (Conspiracy)
"Odalisk" (Calliope's Circus)
Odashu, Genji (Shogun Warriors pilot) - by David Lawrence
Oddball (Death-Throws, Elton Healey) - by Chadman
Oddball of Earth-9511
Oddball (Death-Throws, Orville Bock) - by G Morrow
Oddbrand Otter (Asgardian character)
Odd John (Micronauts foe)
Oddt, Professor Hugo (Dorkham Asylum)
Odin
O'Donnell, Eamon of Otherworld (Keeper of Cassidy Keep, X-Men character) - by MarvellousLuke & Proto-Man
O'Donnels, Patty (Pulitzer Patty)
O'Doughan, Terri (Mr. Immortal's first girlfriend) - by Proto-Man
O'Dowd, Duke (WW2, Human Meteor)
Odukoye, Dr. (Katherine Summers' doctor)
Odysseus (Greek hero) - by Will U
Of (Brotherhood of Evil Prepositions, Howard the Duck character)
O'Farrell, Artie (porn producer, Karen Page character) - by Chadman
O'Farrell, Jim (porn producer, Artie's brother)
Officer Andrews (San Francisco first responder) - by Chadman
Officer Brady (Cloak & Dagger/Mayhem foe)
Officer Brick (corrupt police officer)
Officer Kris Cleary (Cloak & Dagger/Mayhem character)
Officer Coogan (NYPD, Kingpin agent)
Officer Demin of Earth-75011 (Peddler, Slow Glass)
Officer Clair Dodge (Typhoid character)
Officer Dragon imposter (Nova character) - by Madison Carter
Officer Greene (NYPD, corrupt)
Officer Gun (Mr. Laughs foe, Spider-Man Magazine)
Officer Hegerfors (NYPD, Daredevil character)
Officer George Hill (Lockjaw story)
Officer Holloran (Pink Psychos)
Officer LaRoue (Xenophobic Man foe)
Officer Liebowitz (Matt Murdock character) - by Chadman
Officer Louis Mazzilli (Cloak & Dagger/Mayhem character)
Officer Menendez (NYPD, Muse victim)
Officer Mulcahay (NYPD, fought Micah Synn)
Officer O'Malley (World War II-era NYPD officer, Betty Dean ally) - by Proto-Man
Officer Outbody (Astral Plane Patrolman, Doctor Strange character) - by Loki
Officer Pacifico (Daredevil character)
Officer "Race" Racette (Westside Ripper)
Officer Scott (NYPD, Muse victim)
Officer Simmons (Thor character)
Officer Spanner (police officer, killed by Paulo Scorcese)
Officer Stanley (NYPD, Kraven character)
Officer Stone (X-Statix character)
Officer Trezza (Lockjaw story)
Officer Trumbull (police officer, killed by Paulo Scorcese)
Officer Wilson (San Francisco first responder) - by Chadman
Officer Z.E.R.O. (Code: Blue foe) - by Prime Eternal
Offset (Shi'ar Death Commandos) - by Chadman
Og, Ian (Clansman, 1692)
Ogada, Dr. (Damocles Foundation)
Ogar (guardian of King Solomon’s Tomb, Black Panther foe)
O'Gara, Heather (Blackbird/Jackdaw)
Ogarth (New Atlantean, 1950s) - by John Kaminski
Ogden (She-Hulk character) - by the Beetle
Ogeode (Crystar character) - by David Lawrence
Ogilvy, Robert (Sons of the Serpent, Daredevil character) - by Chadman
Ogor (Kallusian)
Ogor (Martian) - by John Kaminski
Ogord of Earth-691 (31st Century, Reavers of Arcturus)
Ogord, Stakar (Starhawk) of Earth-90110 (Cosmic Avengers)
O'Grady, Chief (Code: Blue administrator) - by Prime Eternal
Ogre (Bonzo)
Ogre (X-Men & Thunderbolts character)
ogre (Asgardian, Raven Banner character)
Ogre of Ultraverse (Wrath foe) - by Grendel Prime
Ogre (Wicked Brigade)
Ogron (Maruthea, Bonjaxx's Bar patron, Doctor Who)
Ogrus of Earth-5555 (Death's Head (FPA) foe) - by MarvellousLuke
Oguot (Sputs, Tunnelworld)
Ogun (African God)
Ogun (Santerians)
Ogur (Mogul, Thor character)
O'Hanlon, Paddy (Gael)
O’Hara (Sweat Shop)
O'Hara, Mrs. (Robert "Ironguts" O'Hara's wife) - by Chadman
O'Hara, Angel (Lilith character)
Ohara, Gedde of Earth-928 (Spider-Man 2099 character) - by Zerostar
O'Hara, Martin (Angel's father)
O'Hara, Miguel (Spider-Man) of Earth-928
O'Hara, Reuben (Tantra, X-Student)
O'Hara, Cmdr. Robert "Ironguts" (San Francisco Police Department, Daredevil ally) - by Chadman
O'Hara, Rose (Origin, Wolverine character) - by Stunner
O'Hare, Bridget (Sea Witch, Young Gods)
O'Hare, Kaitlyn of Ultraverse (Backstabber)
Ohnn, Dr. Jonathan (Spot)
"O'Hoolie" (Sergius O'Hoolihan)
O'Hoolihan, Sergius (Fantastic Four character) - by Norvo
O-Inari (Inari)
Oinari-sama (Inari)
Oink (O-Force)
Oizys (Olympian goddess of misery) - by Proto-Man
Ojeeg (Baron Karza foe) - by Grendel Prime
Ojo Macabra (South American super-hero, Zeitgeist victim) - by Prime Eternal
Oka'an (Dark Dimension ruler)
Okada, Col. (Iron Man character)
Okonorote (Incan God)
O'Koren, Mr. (father of Billy & Mary Elizabeth O'Koren)
O'Koren, Mrs. (mother of Billy & Mary Elizabeth O'Koren)
O'Koren, Billy (aided Daredevil in bringing Hogman to justice)
O'Koren, Mary Elizabeth (bought drugs from Hogman, overdosed)
"Okraas" (demon associates of Orleans Cooper)
Okzik (pre-FF alien) - by John Kaminski
Olafsen, Bruce (Bruto the Strong Man, Circus of Crime)
Olar (Brethren)
Olav (Conan ally) - by Prime Eternal
Old Clem (Clem Barstow)
Olddan, Miles (Living Mummy character)
Old Devil (Scribe)
Old Devil of Earth-717
Oldest of All Wizards (Master Khan)
"old friend" (Dr. Zero)
"Old Funny Face" (George Masterson)
Old Grey Beard (Gandalf)
old guy (Mandate, Wolverine character)
Old Hattie (Capo agent, Inhuman psychic)
old inventor (created Phantom Bullet's gun)
Old Izak of "Earth-8116" (Izak)
Old John (Haggard/Grimjack)
"Old" Joseph (highwayman, Howard Douglas rival)
old lady (fallen angel Lucifer host)
Old Lady Squirrel Girl of Earth-61340 (elderly time-displaced Squirrel Girl counterpart) - by Chadman
"old man" (Elod Kisfaludi)
old man (encountered Dralla)
old man (encountered Ch'manu)
"old man" (Man-Thing character)
"Old Man" (Willis Striker foe)
"Old Man" (Ogeode)
Old Man (Starbrand wielder) - by Prime Eternal
Old Man (Ken Connell, Star Brand wielder)
"old man" (Zum Corporation)
"Old Man" (Cloak's "precursor", Shadow (Larry Cranston) homage)
Old Man of Ultraverse (Freex character) - by Luis Dantas and Snood
Old Man (Verdelet)
"Old Man" (Cole)
"Old Man" Jameson (Daily Bugle, World War II)
Old Man of the Mountain (Hassan ibn Sabbah)
Old Man of the Mountain (Rashid ad-Din)
"Old Man of the Sea" (Namor character) - by Markus Raymond
Old Man of the South Pole (Shou-Hsing)
Old Man Spider of Earth-4 (Ezekiel Sims, Spider-Man character) - by MarvellousLuke
Old Man Venom of Earth-17673 (Logan, Anti-Poison resistance leader) - by Proto-Man
Old Man X of Earth-4011 (White Ghost (John Howlett Jr.) )
Old Nick (Mephisto)
Old Nick (Satannish)
"Old One" (Ak)
Old One (Golden Age, Terror (Pevely) foe) - by Ron Fredricks
Old One (Argonauts)
old one (Alpha Centaurian, Namor character)
Old One of Earth-Shadowline (Dr. Zero)
Old Sarah Mumford (Marvel UK) - by Loki
Old Scratch (Satannish)
"old stranger" (Elod Kisfaludi)
"Old Whitey" (Dallas Kid)
Old Wolf Heart (Wolverine ally)
Old Woman (Avatars of the Mandarin)
Old Woman of Beare (Glorianna O'Breen)
Old Woman on the Hill (Bova)
old worker (Harry Markham employee)
"old yeti" (Man-Thing character)
Oldow (Golden Age, Defender foe) - by Grendel Prime
Oldstrong, Kate (Kate Waynesboro)
Olebogeng, Theodore (Black Panther Character) - by Markus Raymond
Olebogeng, Walter (Theodore's brother)
Oleg (Namor foe) - by John Kaminski
"Ol' Hobby" (Roderick Kingsley, Hobgoblin)
Oliver (Demon-Fire)
Oliver, Frank (Kangaroo)
Oliveri, Felicita (NFL SuperPro character)
Olivetti, Charles (NY city councilman) - by Proto-Man
Olivier (demon, Punisher foe) - by Squid
Ollakook (Santa Claus)
Ollerus the Unmerciful (Defenders foe) - by Chadman
Ollsen, Jack (Joel Flood trial)
Olnar (Dark Dimension ruler) - by Jean-Marc Lofficier
Olórin (Gandalf)
"Ol' Roddy" (Roderick Kingsley, Hobgoblin)
Olsen ("Duckworld")
Olsen, Dr. (scientist, served Nazis)
Olson, Tara (Thor Girl)
Ol' timid Timothy (Timothy Quail)
Oltnam (Contraxian, Jack of Hearts foe)
Olvidos, Manuel (Team America/Thunderiders character)
Olympian God of the Underworld (Pluto, Olympian)
Omar (Sinbad's crew)
Omar (Sando's partner, Captain America/Bucky foe)
Omar ?? (Captain America character)
Omar (X-Statix character)
Omar, Colonel (Golem enemy)
O'Malley (World War II-era NYPD officer, Betty Dean ally) - by Proto-Man
O'Malley (police officer)
O'Malley, Captain (Namor character)
O'Meara, Shan of Earth-691 (31st century, computer system engineer of Sol III)
Omega (Fantastic Four foe)
Omega (Man-Beast)
Omega of the Thanosi (Infinity Abyss character)
Omega-20 of Earth-700 (First Line character) - by Norvo
Omega Ray (Asteroth)
Omega Red of Earth-9112
Omega Skrull of Earth-982 (MC2, Apox)
Omega the One-Man Army (Scramble)
Omegatron (Defenders foe) - by Stunner
Omen (Legion of the Night)
Omen, Nathaniel (Captain Omen)
Omerta (Italian hero, Alpha Flight character) - by AvatarWarlord72
Omerta (Paulie Provenzano, X-Men member) - by Norvo
Omeyocantli (Serpent Men)
Omir the Snake Charmer (Circus of Death member) - by Chadman
Omm (Spider God, Conan character)
Ommennon (Tunnelworld?, mentioned only)
Omnipotent Oshtur (Oshtur)
Omniscient One (Asti the All-Seeing)
Omnivore (Quasar foe)
Onanwro, Yan of Earth-691 (31st century, chief security officer of Sol III)
Once and Future King (King Arthur)
Once and Future Thor (Dargo Ktor) - by Snood and Doc Savage
The One (repository of the knowledge of the Watchers, Fantastic Force/Fantastic Four character) - by Donald Campbell
One (Divine Wolf/Shu-Hu)
The One (K'un-Lun robot, Iron Fist foe)
One (Stealth Inc.)
One (Hulk character)
One Above All (Soul Survivors)
One-Armed Bandit (Jackpot)
One-Eye (Old West, el Sombro foe)
"One-Eye" (Psyklop)
One-Eye (neanderthal)
One-Eyed (Akif of Jarabesht)
One-Eyed Joe (Skrulls of Kral)
One From Beyond (Beyonder; also see Kosmos)
Onehand (Church of the Sheltering Hands, Daredevil foe)
"One-I-Hate" (Joe MacTaggert)
One-Kilometer tall Man (Temujai)
107 (Psigns of the Times)
O'Neal, Kwame (hospital security officer, Daredevil character)
O'Neil (security guard, Spider-Man character)
O'Neil (Commander, Free Divers)
O'Neil (Commissioner, Shadow City)
O'Neil, Bridget (Fantastic Four character) - by The Beetle
O'Neil, Lucius (Mangler)
O'Neill of Earth-88194 (Shadowline, Merchants)
O'Neill, Ms. (Kingpin employee)
"One-Man Army" (Arsenal/Nimrod Strange)
One-Man Atrocity (Fight Man/Agent X foe)
One-Man Zodiac (Ghost Rider foe)
"One Robot Humanoid Horde" (Humanoids)
1000-Year-Old Son of a 1000-Year-Old Mother (Hassan ibn Sabbah)
1400 Club Leader (Spider-Man & Foreigner foe)
Oninjay (Firemane, Force Four)
Onionhead (Split-Second Squad)
Oni Yew of Earth-2301 (Mangaverse, Punisher foe) - by MarvellousLuke
Ono, Kosei (Genji Odashu's lawyer, Shogun Warriors character)
Onslaught (Imperial Guard)
Onyx (Broker's slaves)
Onyxx (Sydney Green, X-Student) - by MarvellousLuke
Oog (pre-FF monster) - by Madison Carter
Oona's mate (at Odin's auction, Land of the Golden Star)
Oonagh Mullarkey (Marvel UK, Gena-Sys)
Oort the Living Comet ("Quicksilver foe", Legion of the Unliving)
Ooru (Captain Mar-Vell foe) - by Spidermay
Ootah of the Negative Zone
Ooze (O-Force)
Opal ?? (She-Hulk character, talk show host) - by Will U
"Opaque" (Tigra foe)
Opar (Tagak ally)
Operative 12 (Kashmir Vennema-12083)
Operative A.1416 (Brain Drain)
Operative M (Nihilist Order)
Operative X (Lightner/Nth Man/Mysterium)
Operator (Lenny Flynn)
Opsidian the Dark (Gene Nation)
Optiman (O-Force)
Optinuts Prime (squirrel, Squirrel Girl ally)
Oracle of Lemuria (Sinbad character)
Oracle (Inhuman character) - by Spidermay
Oracle (Shi'ar Imperial Guard) - by Chadman
Oracle (Sehv) - by Greg O
Oracle (S.H.E.)
Oracle (O-Force)
Oramosha, Dr. Kishi (Deadline)
Oranah (Stag God)
"Orange" of Earth-5555 (Freedom Fighters)
Orann (sorcerer, enemy of Cat People)
Oranna (voodoo priestess)
Orastes (Hyborian era)
Orator (Magneto character) - by Norvo
Oratz (former head of Dallas, Texas hospital burn ward)
Orb (Ghost Rider foe)
Orb (Zadkiel/Danny Ketch associate) - by G Morrow
Orb (Neo, X-Men foe) - by MarvellousLuke
Orbin (Conan character)
Orbit (Spacemen)
Orbit (O-Force)
Orbiting Coffin (Ray Coffin)
Orb Weaver (Galactic Alliance of Spider-Men member)
Orc (Urthona's Champion)
Orchid (Blackstone the Magician foe) - by Grendel Prime
Orchid (O-Force)
O'Reilly, Clyde (vampire, 1950s) - by Markus Raymond
O'Reilly, Eveline (Abraham van Helsing's daughter, Dracula character) - by MarvellousLuke
O'Reilly, Sean (Daily Bugle staff)
O'Reilley, Seymour (Spider-Man character, Midtown High School bully) - by Snood & Mike Fichera
Orekhov, Vladimir (Dr. Volkh, Bogatyri)
Orestez (Elektra's brother)
Orestus (Argonauts)
Orff, Noel (Captain America character)
Orffyreus (Stonecold)
Organizm 0.9B (Sludge character)
Organizer (Daredevil foe)
Orge (Orgesky's partner)
Orgesky, Dr. (mutated Elk Diamond)
Ori (Yakuza, Sano Orii ally)
Ori, Sen. Stan (corrupt politician, Punisher foe) - by Proto-Man
O'Rielly, Brigid (Mayhem)
Orifice (O-Force)
Origin (Cosmic being, Quasar character)
original Yancy Streeter (Daniel Grimm Jr.)
Orii, Kenzo (Yakzua, White Tiger (Del Toro) foe) - by Chadman
Orii, Sano (Kenzo's son, White Tiger (Del Toro) foe) - by Chadman
Orikal (Thor character)
Orini (Dr. Strange foe) - by Jean-Marc Lofficier and Prime Eternal
"Orio" (Deviant Horde)
Oriole (Air Force) - by LV
Orion (Truthsayer's dog)
Orion, Kara (Daredevil character) - by Chadman
Orion Rex (Marvel Boy (Grayson) foe) - by John Kaminski
Orizaba (sorcerer, Costaguay) - by AvatarWarlord72
Orizaba, Theresa ("Blood-Beast", Costaguay) - by AvatarWarlord72
Orka (the Human Killer Whale, Namor foe) - by Chadman
Orkie (Hank Pym's dog) - by Julien Vivé
Orksa (Deadpool character)
Orlando (Masque victim, Ghost Rider character)
Orlando (Owl employee)
Orlova, Lisette of Earth-917 (Reed Richards' wife) - Zerostar
Orm (Dimension of Exiles)
Ormraxes (Eithriall the Invincible)
Ormuz (Conan foe)
Orne'q (Conan character)
Ornstein (Kingpin colleague)
Orogo (Journey into Mystery) - by Future
Orogo the Mighty (Orogo) - by Future
Ororogue of Earth-989112 (Rogue/Storm)
Orphan (extraterrestrial creature) - by Markus Raymond
Orphan (Mr. Sensitive, X-Statix) - by Proto-Man
Orphan Maker (X-Factor/X-Men/Generation X foe) - by Chadman
Orphelus (Dracula character)
Orpington-Smythe, Nigel (Peter, RCX)
Orrek (Homo mermani)
Orrgo (Defenders foe, pre-Marvel monster) - by Stunner
Ort-Beast (Hulk foe) - by Chadman
Ortega, father (Hellstorm character)
Ortega, Nicol (Slug employee)
Ortez (boxer)
Ortiz, Jaime (Damage)
Orugawa, Princess Akiuki of Earth-1211 (Black Dragon Society)
Oruthu (worshipped by Jeremiah)
Orville ?? (Howard the Duck's "brother", "Duckworld")
Orwell (Brotherhood)
Orwell, Oliver (MI-13 quartermaster, O)
Os, Kyzerra (Deviant, Mole Monster's mother)
Osaku (Snakeroot)
Osama el-Braka (suspected identity of Howard the Duck)
Osato of Earth-1211 (Black Dragon Society)
Osborn, Harry
Osborn, Norma of Earth-8107 (Spider-Man character) - by David Lawrence
Osborn, Norman (Green Goblin)
Oscar ?? (Daily Bugle intern)
Oscar ?? (doorman)
Oscar ?? (X-Student, X-Cutioner victim) - by MarvellousLuke
Oscuram (Darklove)
O'Shaugnessy, "Knuckles" (Ghost Rider character) - by Loki
O'Shaughnessy, Sergius (newspaper column writer) - by Chadman
O'Shea, Heidi (Avengers character) - by Proto-Man
Oshtur (Elder God, Vishanti member, Doctor Strange character)
Oshun (Santerians)
Osiris (Egyptian god) - by Will U
Oskar, Rachel (Ratatoskr)
Osnick, Oliver "Ollie" of Earth-982 (Steel Spider)
Osprey (Frightful Four try-out member) - by John Kaminski
Osprey (Pol Tiurno)
Ossem (former King of Atlantis) - by MarvellousLuke
Ostara (Oshtur)
Ostinato (X-Force member)
O'Sullivan, Solomon (X-Statix rival) - by Proto-Man
Oswald (Brotherhood) - by Zerostar
Oswald, Lee Harvey of Earth-9007 (WCA story)
Otanes (Zugite)
Otetsukun (Japanese giant robot, Fantastic Four character) - by Madison Carter
Othbaal (Conan foe) - by Spidermay
Other (Chthon)
Otkid the Omnipotent (Dr. Strange foe) - by Grendel Prime
Otmu the Watcher (Oblivion Plague, Quasar character)
Otny (Asgardian troll, Raven Banner character)
Otomo (Gene Dogs enemy)
Otomo (Machine Man ally) - Sammy 7D and Prime Eternal
O'Toole (1950s, Sven the Spider-Killer's boss)
O'Toole, Donny (reporter) - by Chadman
O'Toole, Leila (Plasma)
O'Toole, Megan (Burnout)
O'Toole, Quentin (Punisher's ally) - by the Beetle
Otterson (colleague of Horatio Piper)
Otto ?? (Hugo von Stahl victim)
Otto ("Wise Ones", Doctor Doom character)
Otto (Miss Mech's Super Squad)
Ouija (Alpha Flight trainee) - by Norvo
"Our li'l Doomanatrix" (Leather Boy)
"Our Lord Godhead" (Celestial)
Ousir (Osiris)
Outback (Wanderers)
"Outback" (Tigra foe)
Outcast (Xorak the Outcast)
Outcast (Yuri Petrovitch, Crimson Dynamo)
Outlaw (Death's Head-Minion)
Outlaw (Punisher character)
Outlaw (Deadpool/Agent X ally) - by Patrick D Ryall
"Outrageous S-Boy" (Spider-Boy, Amalgam Universe)
Ou'zli (Shi'ar, Starblast character) - by Chadman
Ovada (Conan foe)
Overdrive (Spider-Man foe) - by Minor Irritant
"Overgrown Eggplant" (Vicious Vine)
Overkill of Earth-691 (Guardians of the Galaxy foe) - by Markus Raymond
Overkill (O-Force)
Overkiller (mutant hunter, Slapstick foe) - by Patrick D Ryall
Overknight (Chess Set)
Overlay (X-Student) - by MarvellousLuke
Overlord of Earth-6966 (Silver Surfer foe) - by Stunner
Overlord (Kearson Dewitt)
Overlord of Dimension X (Slapstick foe) - by Patrick D Ryall
Overlord of the Underworld (Pluto, Olympian)
Overman (Master of the World)
Overmaster (Thog)
Over-Mind (Fantastic Four foe, Defenders member) - by Chadman
"Overpower" (Override)
Override (partner of Aura, Scarlet Spider/Spider-Man/Spider-Woman foe) - by Minor Irritant
Overrider (Captain America and SHIELD II foe)
Overseer (Iron Man foe)
Overshadow (Voight)
Oversight of Earth-88194 (Shadowline, Merchants)
Oversize (Shadow Force)
Overtime of New Universe (Linsdey Falmon)
Overtime (Hector Bautista)
Owayodata (Native American god, Red Wolf patron) - by Will U, caliban & Prime Eternal
Owl (Leland Owlsley, Daredevil foe) - by Chadman
Owl (Dr. Strange character) - by Markus Raymond
Owl of Earth-717
Owl, Ethan (Ghost Dancer character)
Owl, James (Ghost Dancer, Marvel UK)
Owlsley, Leland (Owl)
Owlwoman (Marvelman/Miracleman character)
"Owner of the world's only time machine" (Willy Phelps)
Owsley, Brigadier General (Defenders character)
Ox (Blonde Phantom foe) - by Spidermay
Ox (Karl Stragg)
Ox (Night Raven foe)
Ox of Earth-80219 (Enforcers)
Oxbow (First Line member) - by Norvo
Oxford Blue (Euro-Trash)
Oxo (Special Executive)
Oya (Santerians)
Oyakata (Deadpool employer) - by Patrick D Ryall
Oyama, Kenji (Lord Dark Wind)
Oz, Dr. Malachi (Woodgod foe) - by Markus Raymond
Ozaan (Frog-Man foe)
Ozak (pre-FF alien) - by John Kaminski & Ron Fredricks
Ozaki, Keigo (Vision character) - by Proto-Man
Ozamm (pre-FF monster) - by Future
Ozarks Kingpin (backwoods crime boss, Deadpool ally) - by Proto-Man
Ozawa, Osama (Colleen Wing's great-uncle, X-Men character) - by Norvo
Ozel (Inhuman) - by Markus Raymond
Ozone (O-Force)
Ozt (xt, shrunk Mark Coren)
Ozu (Cutlass foe)
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