Here it is my biggest cast for none other than "Marvel Ultimate Alliance." There will be characters you may not recognize. That's because different consoles have different playable characters. I included everyone, even cameos. So enjoy and please leave comments.
Jason Lewis as Captain America
Tobey Maguire as Spider-Man
Chris Hemsworth as Thor
Hugh Jackman as Wolverine
George Clooney as Nick Fury
Scarlett Johansson as Black Widow
Ted Levine as Dum Dum Dugan
Robert Downey Jr. as Tony Stark/Iron Man
Pete Postlethwaite as Edwin Jarvis
Esai Morales as Wyatt Wingfoot
Ioan Gruffudd as Mr. Fantastic
Jessica Alba as Invisible Woman
Nick Zano as Human Torch
Michael Chiklis as The Thing or as the voice of The Thing
Justin Long as Weasel
Sean Patrick Flanery as Daredevil
Jordana Brewster as Elektra
Gina Gershon as Ronin
Wesley Snipes as Blade
Nicolas Cage as Ghost Rider
Tyrese Gibson as Luke Cage
James Franco as Moon Knight
Djimon Hounsou as Blak Panther
Michael Rosenbaum as Vision
Patrick Wilson as Hank Pym
Wentworth Miller as Namor
Nathalie Cox as Namorita
Johnny Depp as Doctor Strange
Gemma Ward as Clea
Daniel Dae Kim as Wong
Jensen Ackles as Hawkeye
Edward Norton as Bruce Banner/The Hulk
Doug Jones and Laurence Fishburne as Silver Surfer
Phil LaMarr as Uatu
Jake Gyllenhaal as Black Bolt
Rachel McAdams as Medusa
Isla Fisher as Crystal
Sean Maguire as Gorgon
John Malkovich as Karnak
Ladislav Beran as Triton
Monica Bellucci as Spider Woman
Meryl Streep as Lilandra
Ewan McGregor as Corsair
Meiling Melançon as Psylocke
James Marsden as Cyclops
Ryan Renolds as Deadpool
Joseph Gordon-Levitt as Nightcrawler
Famke Janssen as Jean Grey
Patrick Stewart as Professor X
Daniel Cudmore as Colossus
Shawn Ashmore as Iceman
Halle Berry as Storm
Brian Blessed as Odin
Kate Beckinsale as Valkrie
Rosemary Harris as Volla
Vinnie Jones as Vidar
Jessica Biel as Sif
Javier Bardem as Tyr
Robert Knepper as Heimdall
Joaquin Phoenix as Balder
Luke Ford as Hermod
Ali Larter as Ms Marvel
Billy Crudup as Captain Marvel
Dominic Purcell as Venom
Nathan Jones as The Rhino
Mark Strong as Shocker
Vin Diesel as The Scorpion
I really like the Scorpion from the Spider-Man 3 game
Bruce Campbell as Mysterio
Ray Park as Bullseye
Derek Mears as Attuma
Michael Fassbender as Tiger Shark
Tom Cruise as Winter Soldier
Robert Maillet as Radioactive man
John Rhys-Davies as Ulik
Sala Baker as Kurse
Chow Yun-Fat as The Mandarin
Frank Welker as Ultron
Daniel Day-Lewis as Baron Mordo
Tony Todd as the voice of Mephisto
Doug jones as the voice of Blackheart
Hugo Weaving as Fin Fang Foom
Hugo Weaving as Ymir
Hugo Weaving as Galactus
What can I say Hugo is the perfect giant
Collin Chou as Krang
Anthony De Longis as Byrrah
Michelle Forbes as Deathbird
Dwayne Johnson as Gladiator
Katherine Heigl as Enchantress
Steve Austin as The Executioner
Robert Foxworth as M.O.D.O.K
Thomas Kretschmann as Super Skrull
Luke Goss as Paibok
Anna Walton as Skrull Empress
Kevin Grevioux as Titannus
Roland Kickinger as Grey Gargoyle
Conan O'Brien as Arcade
Karel Roden as Crimson Dynamo
Grey DeLisle as Hussar
Kevin Nash as Neutron
Mark Ryan as the voice of Star Bolt
Charles Adler as the voice of Warstar
Jess Harnell as Dragon Man
Randy Couture as Wrecker
Ian Ziering as Piledriver
Jamal Duff as Thunderball
Andrew Pleavin as Bulldozer
Ian McKellen as Magneto
Liev Schreiber as Sabretooth
Tom Hiddleston as Loki
Ralph Fiennes as Dr. Doom