Tom Cruise Jerry Maguire (archive footage) (uncredited)
Mckenna Grace ADR & Dubbing
Ralph Fiennes Alfred Pennyworth (voice)
Seth Green King Kong (voice)
Jamie Chung Animation
Joan Martorell Orchestrator
Channing Tatum Superman (voice)
Jonah Hill Green Lantern (voice)
Jason Mantzoukas Scarecrow (voice)
Will Arnett Batman / Bruce Wayne (voice)
Zach Galifianakis Joker (voice)
Michael Cera Robin / Dick Grayson (voice)
Jemaine Clement Sauron (voice)
John Requa Creative Consultant
Jenny Slate Harley Quinn (voice)
Rosario Dawson Batgirl / Barbara Gordon (voice)
Héctor Elizondo Jim Gordon (voice)
Chuck Dixon Thanks
Mariah Carey Mayor McCaskill (voice)
Zoë Kravitz Catwoman (voice)
Susan Bennett 'Puter (voice)
Kate Micucci Clayface (voice)
David Burrows Editor, Anchorman Phil (voice)
Doug Nicholas Additional Voices (voice)
Patrick Christensen ADR Mixer
Riki Lindhome Poison Ivy (voice)
Conan O'Brien The Riddler (voice)
Ellie Kemper Phyllis (voice)
Max Aruj Music Score Producer
Chris McKenna Screenplay
John Simpson Foley Artist
Billy Dee Williams Two-Face (voice)
Bill Finger Characters
Glenn Ficarra Creative Consultant
Phil Lord Producer
Benjamin Melniker Executive Producer
Bob Kane Characters
Bruce Timm Thanks
Jerry Siegel Characters
Christopher Miller Producer
Neal Adams Thanks
Jack Kirby Thanks
Frank Miller Thanks
Adam Devine The Flash (voice)
Eddie Izzard Voldemort (voice)
Chad Smith Musician
Joe Shuster Characters
Bob Rozakis Thanks
John Whittington Additional Writing, Screenplay
Gerry Conway Thanks
Doug Benson Bane (voice)
Christopher S. Aud Sound Effects Editor
John Powers Middleton Co-Producer
Gardner Fox Thanks
Roy Lee Producer
Max Allan Collins Thanks
Steve Englehart Thanks
Paul Dini Thanks
Ryan Young ADR Mixer
James Bleakley Layout
Will Kaplan Music Editor
Marv Wolfman Thanks
George Pérez Thanks
Gregg Landaker Sound Re-Recording Mixer
Curt Swan Thanks
Nicholas Stoller Creative Consultant
Mort Weisinger Thanks
Òscar Senén Orchestrator
John Venzon Editor, Additional Voices (voice)
Matt Hatton Concept Artist
Christopher Gordon Conductor
William Moulton Marston Characters