 Seth GreenThe Nerd / Batman / Robin / Aquaman / Additional Voices (voice) | The Nerd / Batman / Robin / Aquaman / Additional Voices (voice) |
 Breckin MeyerSuperman / Plastic Man (voice) | Superman / Plastic Man (voice) |
 Alex BorsteinWonder Woman (voice) | Wonder Woman (voice) |
 Nathan FillionGreen Lantern (voice) | Green Lantern (voice) |
 Matthew SenreichThe Flash / Brainiac (voice) | The Flash / Brainiac (voice) |
 Jonathan BanksComposite Superman (voice) | Composite Superman (voice) |
 Alfred MolinaLex Luthor (voice) | Lex Luthor (voice) |
 Giovanni RibisiThe Joker / Two-Face (voice) | The Joker / Two-Face (voice) |
 Paul ReubensThe Riddler (voice) | The Riddler (voice) |
 Adam West60's Batman / Bank Robber (voice) | 60's Batman / Bank Robber (voice) |
 Burt WardSelf (voice) | Self (voice) |
 Hugh DavidsonMartian Manhunter / Tran-Zar (voice) | Martian Manhunter / Tran-Zar (voice) |
 Zeb WellsGreen Arrow / Swamp Thing (voice) | Green Arrow / Swamp Thing (voice) |
 Dee Bradley BakerRa's al Ghul (voice) | Ra's al Ghul (voice) |
 Kevin ShinickNarrator (voice) | Narrator (voice) |
 Mae WhitmanPower Girl (voice) | Power Girl (voice) |
 'Weird Al' YankovicRubberduck (voice) | Rubberduck (voice) |
 Shooter JenningsMr. Banjo (singing voice) | Mr. Banjo (singing voice) |
