Jerry O'Connell Clark Kent / Superman (voice), Cyborg Superman (voice) Rebecca Romijn Lois Lane (voice) Rainn Wilson Lex Luthor (voice) Cress Williams John Henry Irons / Steel (voice) Cameron Monaghan Connor Kent / Superboy (voice) Charles Halford Eradicator (voice), Bibbo Bibbowski (voice) Patrick Fabian Hank Henshaw (voice) Rosario Dawson Diana Prince / Wonder Woman (voice) Jason O'Mara Bruce Wayne / Batman (voice) Shemar Moore Victor Stone / Cyborg (voice) Nathan Fillion Green Lantern / Hal Jordan (voice) Christopher Gorham Barry Allen / The Flash (voice) Nyambi Nyambi J'onn J'onzz / John Jones / Martian Manhunter (voice) Tony Todd Darkseid (voice) Jennifer Hale Martha Kent (voice) Brenda Strong Lillian Luthor (voice) Toks Olagundoye Cat Grant (voice) Erica Luttrell Mercy Graves (voice) Rocky Carroll Perry White (voice) Max Mittelman Jimmy Olsen (voice) Paul Eiding Jonathan Kent (voice) Trevor Devall Dabney Donovan (voice)