On screen
Cast
16 credited performers
Casey Kasem
Shaggy Rogers (voice)
Don Messick
Scooby-Doo (voice)
Frank Welker
Fred Jones (voice)
Nicole Jaffe
Velma Dinkley (voice)
Heather North
Daphne Blake (voice)
Indira Stefanianna
Daphne Blake (voice)
Patricia Stevens
Velma Dinkley (voice)
John Stephenson
Big Bob Oakley / Dracula / Werewolf (voice)
Hal Smith
The Headless Specter / Asa Shanks / Phony Phantom (voice)
Jean Vander Pyl
Sarah Jenkins (voice)
Vic Perrin
Dr. Najib (voice)
Artwork unavailable
Barry Richards
Ghost of Geronimo (voice) (uncredited)
June Foray
Gypsy Fortune Teller (voice) (uncredited)
Artwork unavailable
Susan Stewart
Helga (voice)
Keye Luke
Zen Tuo / Mr. Fong (voice) (uncredited)
Artwork unavailable
Michael Stull
The Wax Phantom (voice)