Matt Bomer

as Clark Kent / Superman (voice)

John Noble

as Brainiac (voice)

Stana Katic

as Lois Lane (voice)

Molly C. Quinn

as Kara Zor-El / Supergirl (voice)

Diedrich Bader

as Steve Lombard (voice)

Jason Beghe

as Terrorist Leader (voice)

Frances Conroy

as Ma Kent (voice)

Melissa Disney

as Thara (voice)

Alexander Gould

as Jimmy Olsen (voice)

Sirena Irwin

as Alura (voice)

Will Yun Lee

as Parasoldier Leader (voice)

Andrea Romano

as News Anchor #2 / Superman's Ship (voice)

Stephen Root

as Zor-El (voice)

Wade Williams

as Perry White (voice)

Michael-Leon Wooley

as Ron Troupe (voice)

Ian James Corlett

as Kryptonian #1 (voice)