Fred Jones / Scooby-Doo (voice)

Shaggy Rogers (voice)

Velma Dinkley (voice)

Daphne Blake (voice)

Burr Batson / Champ Truman (voice)

Faceless Phantom / Bull Brassman / Assistant Director (voice)

Earnest Bailey / Burglar #1 / Worker #1 (voice)

House Computer / Allison (voice)

Taylor Leland / Police Officer (voice)

J.T. Page / Steve Powell (voice)

Natlas (voice)

Nancy Chang (voice)

Bruce Wilkenson (voice)

Elliott Binder (voice)

Jingle (voice)

Gibby Norton (voice)

Alexandra Viggi (voice)

Avery Orenthal / Government Agent (voice)

Ugo DiRinaldi / Shopkeeper (voice)

Cat Creature (voice)

Rebel Canyon (voice) (uncredited)