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)
Seth Green
Superman / Bizarro (voice)
Breckin Meyer
The Joker / Two-Face (voice)
Giovanni Ribisi
Narrator / Starro / Captain Cold (voice)
Kevin Shinick
Sinestro / Swamp Thing / Captain Cold (voice)
Zeb Wells
Harley Quinn (voice)
Tara Strong
Martian Manhunter / Seahorse Leader (voice)
Hugh Davidson
Catwoman / Poison Ivy / Little Girl (voice)
Clare Grant
Green Lantern / Black Adam (voice)
Nathan Fillion
Wonder Woman (voice)
Alex Borstein
The Flash / Reverse-Flash / Weather Wizard / Waiter (voice)
Matthew Senreich
Lex Luthor / Green Arrow (voice)
Alfred Molina
Superboy / Brainiac (voice)
Zac Efron
Lena Luthor (voice)
Sarah Hyland
Gorilla Grodd (voice)
Clancy Brown
The Riddler / Sunbather (voice)
Paul Reubens
Animation
Sarah de Gaudemar
Writer
Director
Cameron Baity
Executive Producer
Geoff Johns
Rich Zim
Ben Zelkowicz
Tom Root
Doug Goldstein