Tom Cruise Jerry Maguire (archive footage) (uncredited)
Héctor Elizondo Jim Gordon (voice)
Suzy Eddie Izzard Voldemort (voice)
Channing Tatum Superman (voice)
Billy Dee Williams Two-Face (voice)
Zach Galifianakis Joker (voice)
Ralph Fiennes Alfred Pennyworth (voice)
Rosario Dawson Batgirl / Barbara Gordon (voice)
Will Arnett Batman / Bruce Wayne (voice)
Jamie Chung Animation
Paul Dini Thanks
Bruce Timm Thanks
Seth Green King Kong (voice)
Chris Hardwick Reporter #3 (voice)
Jonah Hill Green Lantern (voice)
Mariah Carey Mayor McCaskill (voice)
Zoë Kravitz Catwoman (voice)
Neal Adams Thanks
Ralph Garman Reporter #2 (voice)
Kate Micucci Clayface (voice)
Chuck Dixon Thanks
Jemaine Clement Sauron (voice)
John Powers Middleton Co-Producer
Jenny Slate Harley Quinn (voice)
Michael Cera Robin / Dick Grayson (voice)
Conan O'Brien The Riddler (voice)
Joe Samachson Thanks
Jack Kirby Thanks
Adam Devine The Flash (voice)
Riki Lindhome Poison Ivy (voice)
Thomas J. O'Connell ADR Mixer
Christopher Miller Producer
Joe Certa Thanks
Benjamin Melniker Executive Producer
Jason Mantzoukas Scarecrow (voice)
Bob Kane Characters
Bob Rozakis Thanks
Nicholas Stoller Creative Consultant
Phil Lord Producer
Chris McKenna Screenplay
Ellie Kemper Phyllis (voice)
Jay Fisher ADR Mixer
Doug Benson Bane (voice)
William Moulton Marston Characters
John Simpson Foley Artist
Sarah de Gaudemar Animation
Max Allan Collins Thanks
Jerry Siegel Characters
Barbara Harris ADR Voice Casting
Bill Finger Characters
Joe Shuster Characters
Roy Lee Producer
Erik Sommers Screenplay
Johannes Vogel Conductor
Glenn Ficarra Creative Consultant
Chris McKay Pilot Bill / Additional Voices (voice), Director
Patrick Christensen ADR Mixer
Emma Marie DuPell Assistant Editor
Gardner Fox Thanks
John Requa Creative Consultant
Frank Miller Thanks
Chad Smith Musician
Lew Schwartz Thanks
Mort Weisinger Thanks
Paul Norris Thanks
John Venzon Additional Voices (voice), Editor
Don Newton Thanks
Seth Grahame-Smith Story, Screenplay
Daniel Edward Mora Loop Group Coordinator
Carmine Infantino Thanks
Gene Colan Thanks
Jim Mooney Thanks