 Seth GreenThe Nerd / Batman / Robin / Scarecrow / Darkseid / Ace the Bathound / Toyman / Dr. Fate / Jimmy Olsen / Black Manta / Aquaman / Clayface / The Penguin / Killer Croc / Cyborg / Banehound / Various (voice) | The Nerd / Batman / Robin / Scarecrow / Darkseid / Ace the Bathound / Toyman / Dr. Fate / Jimmy Olsen / Black Manta / Aquaman / Clayface / The Penguin / Killer Croc / Cyborg / Banehound / Various (voice) |
 Breckin MeyerSuperman / Bizarro (voice) | Superman / Bizarro (voice) |
 Nathan FillionGreen Lantern / Black Adam (voice) | Green Lantern / Black Adam (voice) |
 Alex BorsteinWonder Woman (voice) | Wonder Woman (voice) |
 Matthew SenreichThe Flash / Reverse-Flash / Weather Wizard / Waiter (voice) | The Flash / Reverse-Flash / Weather Wizard / Waiter (voice) |
 Alfred MolinaLex Luthor / Green Arrow (voice) | Lex Luthor / Green Arrow (voice) |
 Zac EfronSuperboy / Brainiac (voice) | Superboy / Brainiac (voice) |
 Sarah HylandLena Luthor (voice) | Lena Luthor (voice) |
 Clancy BrownGorilla Grodd (voice) | Gorilla Grodd (voice) |
 Paul ReubensThe Riddler / Sunbather (voice) | The Riddler / Sunbather (voice) |
 Giovanni RibisiThe Joker / Two-Face (voice) | The Joker / Two-Face (voice) |
 Kevin ShinickNarrator / Starro / Captain Cold (voice) | Narrator / Starro / Captain Cold (voice) |
 Zeb WellsSinestro / Swamp Thing / Captain Cold (voice) | Sinestro / Swamp Thing / Captain Cold (voice) |
 Tara StrongHarley Quinn (voice) | Harley Quinn (voice) |
 Hugh DavidsonMartian Manhunter / Seahorse Leader (voice) | Martian Manhunter / Seahorse Leader (voice) |
 Clare GrantCatwoman / Poison Ivy / Little Girl (voice) | Catwoman / Poison Ivy / Little Girl (voice) |
