Reparto (por orden de créditos)
Bob Holt
ACTOR
Allan Melvin
Casey Kasem
Shaggy Rogers
Don Messick
Scooby-Doo
Patricia Stevens
Velma
Janet Waldo
Arlene Wilcox
Micky Dolenz
Linda Hutson
Virginia Gregg
Hettie Lynne Hurtes
Shirley Mitchell
Heather North
Daphne Blake
Alan Oppenheimer
Squire Marley
John Stephenson
Man
Lennie Weinrib
Additional Voices
Frank Welker
Fred Jones
Nicole Jaffe
Velma Dinkley