Shaggy Rogers (voice)

Scooby-Doo / Pterodactyl (voice)

Blue Falcon (voice)

Dick Dastardly (voice)

Dynomutt, Dog Wonder (voice)

Daphne Blake (voice)

Velma Dinkley (voice)

Fred Jones (voice)

Young Shaggy (voice)

Young Velma (voice)

Young Daphne (voice)

Young Fred (voice)

Dee Dee Skyes (voice)

Captain Caveman (voice)

Simon Cowell (voice)

Harry Perry (voice)

Bike Cop Gary (voice)

Officer Jaffe (voice)

Keith (voice)

Restaurant Owner (voice)

Ira Glass (voice)

Chad / Chet (voice)

Judy Takamoto (voice)

Muttley (voice)

Muttley (archive sound) (voice)

Cerberus (voice)

Indira Knight (voice)

Hal Murphy (voice)

Beach Guy (voice)

Jamie Rivera (voice)

Mrs. Rogers (voice)

Ghost / Mr. Rigby / Alice (voice)

Officer North (voice)

Baby Rotten (voice)

Dispatcher Stevens (voice)

Ben (voice)

Kari (voice)

Officer Casey (voice)

Samuel Colton (voice)