On screen
Cast
14 credited performers
Casey Kasem
Shaggy Rogers (voice)
Heather North
Daphne Blake (voice)
Don Messick
Scooby-Doo / Scrappy-Doo (voice)
John Stephenson
Professor Busby / Olaf the Terrible (voice)
Lennie Weinrib
Griff (voice)
Vic Perrin
Mr kronos (voice)
Andre Stojka
Toby Wallace (voice)
Arthur Burghardt
Randar the Ape Man (voice)
Bernard Erhard
Darcy (voice)
Henry Corden
Danny Divine (voice)
Jack Angel
Jerry (voice)
Vernee Watson
Sally (voice)
Hal Smith
Sidney Gaspar (voice)
Alan Young
Gaggy Rogers (voice)