Nathan Fillion Hal Jordan / Green Lantern (voice)
Ron Perlman Slade Wilson / Deathstroke (voice)
Dana Delany Lois Lane (voice)
Jay Oliva Director
Grey DeLisle Nora Allen / Young Barry Allen / Martha Wayne / Joker (voice)
Candi Milo Persephone / Pedro Pena (voice)
Kevin Conroy Bruce Wayne / Batman (voice)
Bruce Timm Executive Producer
Michael B. Jordan Victor Stone / Cyborg (voice)
C. Thomas Howell Professor Eobard 'Zoom' Thawne / Reverse-Flash (voice)
Danny Huston General Sam Lane (voice)
Justin Chambers Barry Allen / The Flash (voice)
Sam Daly Clark Kent / Kal-El / Superman (voice)
Kevin McKidd Thomas Wayne / Flashpoint Batman (voice)
Michael Beach Black Manta (voice)
James Patrick Stuart Steve Trevor / George "Digger" Harkness / Captain Boomerang / Orm Marius / Ocean Master (voice)
Danny Jacobs Grifter / Captain Cold (voice)
Cary Elwes Orin / Arthur Curry / Aquaman (voice)
Andrea Romano Doris / Central City Newsreader (voice)
Dee Bradley Baker Etrigan the Demon / Top / Canterbury Cricket (voice)
Kevin Michael Richardson President of the United States (voice)
Peter Jessop Dr. Vulko (voice)
Hynden Walch Yo-Yo (voice)
Vanessa Marshall Wonder Woman (voice)
James Krieg Screenplay
Geoff Johns Original Story, Executive Producer
Jennifer Hale Iris West / Billy Batson (voice)
Sam Register Executive Producer
Steve Blum Lex Luthor / Captain Thunder (voice)
Alan Burnett Executive Producer
Jim Lee Characters
James Tucker Producer
Bobbie Page Executive Producer
Frederik Wiedmann Original Music Composer
Christopher D. Lozinski Editor