Jason Isaacs Superman (voice)
Tara Strong Young Superman (voice)
Amy Acker Lois Lane (voice)
Phil LaMarr John Stewart / Ron Troupe / Gulag Guard (voice)
Diedrich Bader Lex Luthor (voice)
Paul Williams Brainiac (voice)
Vanessa Marshall Diana / Wonder Woman (voice)
Phil Morris James Olsen (voice)
Sasha Roiz Hal Jordan (voice)
Jim Meskimen John F. Kennedy / Dwight D. Eisenhower (voice)
Jim Krieg Co-Producer
Roger Craig Smith Batman (voice)
Bruce Timm Executive Producer
Winter Ave Zoli Svetlana (voice)
Jim Ward George Taylor (voice)
Travis Willingham Superior Man / Guy Gardner / Petrovich (voice)
Mark Millar Comic Book
Greg Chun Ambassador Lee (voice)
Sam Register Executive Producer
Jason Spisak Dimitri (voice)
Frederik Wiedmann Original Music Composer
Wes Gleason Casting
J. M. DeMatteis Writer
Sam Liu Director, Producer
Anna Vocino Tour Guide (voice)
Melissa Lohman Production Manager
Amy McKenna Producer
Christopher D. Lozinski Editor
William Salyers Joseph Stalin / Jack Ryder (voice)
Kilian Plunkett Comic Book