Shaggy Rogers (voice)
Casey Kasem
Scooby-Doo / Scrappy-Doo (voice)
Don Messick
Mummy (voice)
Alan Oppenheimer
Dreadonia Witch / Woman at Store (voice)
Joan Gerber
Screamer (voice)
Mimi Seaton
"The Werewolf Rock" Singer (uncredited voice)
Sven Libaek
Googie / Repulsa (voice)
B.J. Ward
Dracula (voice)
Hamilton Camp
Vanna Pira (voice)
Pat Musick
Brunch (voice)
Rob Paulsen
Crunch (voice)
Frank Welker
Frankenstein / Skull Head / Genghis Kong (voice)
Jim Cummings
Bonejangles (voice)
Brian Stokes Mitchell
Dr. Jackyll / Mr. Snyde (voice)
Ed Gilbert
Executive Producer
William Hanna
Director
Ray Patterson
Animation Director
Casting
Andrea Romano
Joseph Barbera
Original Music Composer
Editor
Gil Iverson
Writer
Jim Ryan
Producer
Bernard Wolf