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) / Dr. LaRue (voice) / Klaus / Milo D...

Lennie Weinrib
Mickey Hack (voice) / Griff (voice)

Vic Perrin
Mr. McDabble (voice) / 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-Johnson
Sally (voice)

Hal Smith
Sidney Gaspar (voice)

Alan Young
Gaggy Rogers (voice)