Justin Chambers as Flash / Barry Allen (voice)

C. Thomas Howell as Professor Zoom / Thawne (voice)

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

Kevin McKidd as Batman / Thomas Wayne (voice)

Dee Bradley Baker as Etrigan (voice)

Steve Blum as Lex Luthor (voice)

Kevin Conroy as Batman / Bruce Wayne (voice)

Sam Daly as Superman (voice)

Dana Delany as Lois Lane (voice)

Grey DeLisle as Nora Allen (voice)

Cary Elwes as Aquaman (voice)

Nathan Fillion as Green Lantern / Hal Jordan (voice)

Jennifer Hale as Iris (voice)

Danny Huston as General Lane (voice)

Danny Jacobs as Grifter (voice)

Peter Jessop as Dr. Vulko (voice)

Lex Lang as Captain Atom (voice)

Vanessa Marshall as Wonder Woman (voice)

Candi Milo as Persephone (voice)

Ron Perlman as Deathstroke / Slade (voice)

Kevin Michael Richardson as President (voice)

Andrea Romano as Doris (voice)

James Patrick Stuart as Steve Trevor (voice)

Hynden Walch as Yo-Yo (voice)