Frank Welker

Scooby-Doo / Fred Jones (voice)

Matthew Lillard

Shaggy Rogers (voice)

Diedrich Bader

Batman (voice)

Grey DeLisle

Daphne Blake / Black Canary (voice)

Kate Micucci

Velma Dinkley (voice)

Jeff Bennett

Joker (voice)

Tara Strong

Harley Quinn / Poison Ivy (voice)

Jeffrey Combs

The Question (voice)

John DiMaggio

Aquaman / Crimson Cloak (voice)

Tom Kenny

Penguin / Plastic Man (voice)

John Michael Higgins

The Riddler (voice)

Nika Futterman

Catwoman (voice)

Fred Tatasciore

Harvey Bullock (voice)

Nicholas Guest

Martian Manhunter (voice)

Kevin Michael Richardson

Clayface / Detective Chimp (voice)