Casey Kasem

as Shaggy Rogers (voice)

Don Messick

as Scooby-Doo (voice)

Frank Welker

as Fred Jones (voice)

Heather North

as Daphne Blake (voice)

Patricia Stevens

as Velma Dinkley (voice)

Ginny McSwain

as Kerry / Girl Fan / Executive Secretary (voice)

Marilyn Schreffler

as Cherie / Sis / Receptionist (voice)