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