Justin Chambers as Barry Allen / The Flash (voice)

C. Thomas Howell as Professor Eobard 'Zoom' Thawne / Reverse-Flash (voice)

Michael B. Jordan as Victor Stone / Cyborg (voice)

Kevin McKidd as Thomas Wayne / Flashpoint Batman (voice)

Kevin Conroy as Bruce Wayne / Batman (voice)

Dee Bradley Baker as Etrigan the Demon / Top / Canterbury Cricket (voice)

Steve Blum as Lex Luthor / Captain Thunder (voice)

Sam Daly as Clark Kent / Kal-El / Superman (voice)

Dana Delany as Lois Lane (voice)

Grey DeLisle as Nora Allen / Young Barry Allen / Martha Wayne / Joker (voice)

Cary Elwes as Orin / Arthur Curry / Aquaman (voice)

Michael Beach as Black Manta (voice)

Nathan Fillion as Hal Jordan / Green Lantern (voice)

Jennifer Hale as Iris West / Billy Batson (voice)

Danny Huston as General Sam Lane (voice)

Danny Jacobs as Grifter / Captain Cold (voice)

Peter Jessop as Dr. Vulko (voice)

Vanessa Marshall as Wonder Woman (voice)

Candi Milo as Persephone / Pedro Pena (voice)

Ron Perlman as Slade Wilson / Deathstroke (voice)

Kevin Michael Richardson as President of the United States (voice)

Andrea Romano as Doris / Central City Newsreader (voice)

James Patrick Stuart as Steve Trevor / George "Digger" Harkness / Captain Boomerang / Orm Marius / Ocean Master (voice)

Hynden Walch as Yo-Yo (voice)