Tony Stark / Iron Man (voice)
Falcon / Ghost Rider / Hogun / Juggernaut / Kurse / Iron Fist / Silver Samurai (voice)
Agent Phil Coulson (voice)
Gamora / Maria Hill / Ms. Marvel / Storm (voice)
Bullseye / Carnage / M.O.D.O.K. / The Thing / Venom (voice)
Drax the Destroyer / Electro / Mysterio (voice)
Doctor Octopus / Mister Fantastic / Sandman (voice)
Beast / Bruce Banner / Hulk / Doctor Doom / Red Hulk / Volstagg (voice)
Havok / Nightmare / Shocker / Toad (voice)
Peter Parker / Spider-Man / Professor Xavier / Silver Surfer / Superior Spider-Man / Winter Soldier (voice)
Doctor Strange (voice)
Captain Britain / Heimdall / Kraven the Hunter (voice)
The Leader (voice) (as Jeff Combs)
Black Panther / Nick Fury / Power Man (voice) (as John Bentley)
Absorbing Man / Colossus / Galactus / General Thunderbolt Ross / J. Jonah Jameson / Kingpin / Laufey / Mandarin / Odin / Rocket Raccoon / Ronan the Accuser / Super-Skrull / Thanos / Ultimate Green Goblin / Whiplash (voice)
Aunt May / Emma Frost / Gwen Stacy / Invisible Woman / Jane Foster / Spider-Woman / Viper (voice)
Black Cat / Black Widow / Elektra / Mystique / Jean Grey / Phoenix / Pepper Potts / Rescue (voice)
Ant-Man / Cyclops / Deadpool / Green Goblin / Magneto / Pyro / Vulture (voice)
Blade / Gambit / War Machine / Iron Patriot (voice)
Aldrich Killian / Arnim Zola / Punisher / Rhino / Union Jack (voice)
Human Torch / Steve Rogers / Captain America (voice)
Self (voice)
Blob / Sentinel (voice)
Abomination / A-Bomb / Beetle / Beta Ray Bill / Curt Connors / Lizard / Daredevil / Red Skull / Taskmaster / Wolverine (voice)
H.E.R.B.I.E. / Mary Jane Watson / Polaris / She-Hulk / Sif / Statue of Liberty / Squirrel Girl / Wasp (voice)
Dormammu / Mastermind / Sabretooth / Star-Lord / Thor (voice)
Fandral / Groot / Hawkeye / J.A.R.V.I.S. / Loki / Moon Knight / Wizard (voice)
Archangel / Nova / Rick Jones (voice)
Iceman (voice)
Jean Grey / Black Widow / Dark Phoenix / Mystique (voice)
(voice)
Mr. Jasper Sitwell / Doombot V / Silver Samurai / Damage Control / Frost Giant / Ego / S.H.I.E.L.D. Announcer / Roxxon Guard / A.I.M. Agent / Venom (voice)
Various (voice)
Wolfgang von Strucker / Havok / Howard the Duck / Super Skrull / Doombot (voice)