On screen
Cast
21 credited performers
Stan Lee
Mayor (voice)
Michelle Trachtenberg
Valkyrie
Shawn Ashmore
Iceman
Tricia Helfer
Sif
Tara Strong
Character not listed
Tom Kenny
Iron Man / Captain America / MODOK (voice)
Charlie Adler
Dr. Doom (voice)
Alimi Ballard
Character not listed
Grey DeLisle
Character not listed
Travis Willingham
Hulk (voice)
Jim Cummings
Character not listed
David Boat
Thor (voice)
Mark Hamill
Chthon
James Marsters
Mister Fantastic
Mikey Kelley
Silver Surfer (voice)
Cree Summer
Storm (voice)
Jennifer Morrison
Wasp (voice)
Nina Dobrev
Ellen (voice)
John Barrowman
Stranger (voice)
Jonathan Frakes
High Evolutionary (voice)
Julia Morrison
Screaming Mimi (voice)