Seth Green

as The Nerd / Batman / Robin / Aquaman / Additional Voices (voice)

Breckin Meyer

as Superman / Plastic Man (voice)

Alex Borstein

as Wonder Woman (voice)

Nathan Fillion

as Green Lantern (voice)

Matthew Senreich

as The Flash / Brainiac (voice)

Jonathan Banks

as Composite Superman (voice)

Alfred Molina

as Lex Luthor (voice)

Giovanni Ribisi

as The Joker / Two-Face (voice)

Paul Reubens

as The Riddler (voice)

Adam West

as 60's Batman / Bank Robber (voice)

Burt Ward

as Self (voice)

Hugh Davidson

as Martian Manhunter / Tran-Zar (voice)

Zeb Wells

as Green Arrow / Swamp Thing (voice)

Dee Bradley Baker

as Ra's al Ghul (voice)

Kevin Shinick

as Narrator (voice)

Mae Whitman

as Power Girl (voice)

'Weird Al' Yankovic

as Rubberduck (voice)

Shooter Jennings

as Mr. Banjo (singing voice)