Seth Green
The Nerd / Batman / Robin / Aquaman / The Penguin / Martian Manhunter / Toyman / Scarecrow / Gorilla Grodd / Little Cheese / Swamp Thing / Abin Sur / Ganthet / Green Arrow / Hawkman / Jimmy Olsen / Various (voice)
Breckin Meyer
Superman / Mirror Master (voice)
Nathan Fillion
Green Lantern / Mr. Freeze (voice)
Alex Borstein
Wonder Woman / Giganta / Woman (voice)
Matthew Senreich
The Flash / Chillblaine / Brainiac / Wildcat (voice)