Tim Daly

as Superman (voice)

Kevin Conroy

as Batman / Bruce Wayne (voice)

Clancy Brown

as Lex Luthor (voice)

Xander Berkeley

as Captain Atom (voice)

Corey Burton

as Captain Marvel / Solomon Grundy (voice)

Ricardo Chavira

as Major Force (voice)

Allison Mack

as Power Girl (voice)

John C. McGinley

as Metallo (voice)

CCH Pounder

as Amanda Waller (voice)

LeVar Burton

as Black Lightning (voice)

Calvin Tran

as Toyman (voice)

Mark Jonathan Davis

as Newscaster (voice)

Brian George

as Gorilla Grodd (voice)

Jennifer Hale

as Starfire / Killer Frost (voice)

Rachael MacFarlane

as Nightshade / Lady Shiva (voice)

Alan Oppenheimer

as Alfred Pennyworth (voice)

Andrea Romano

as Giganta / Computer (voice)

Bruce Timm

as Mongul (voice)

Jonathan Adams

as General (voice) (uncredited)

Michael Gough

as Hawkman / Captain Cold (voice) (uncredited)