Casey Kasem
Shaggy Rogers (voice)
Don Messick
Scooby-Doo / Scrappy-Doo (voice)
B.J. Ward
Googie / Repulsa (voice)
Hamilton Camp
Dracula (voice)
Pat Musick
Vanna Pira (voice)
Rob Paulsen
Brunch (voice)
Frank Welker
Crunch (voice)
Jim Cummings
Frankenstein / Skull Head / Genghis Kong (voice)
Brian Stokes Mitchell
Bonejangles (voice)
Ed Gilbert
Dr. Jackyll / Mr. Snyde (voice)
Alan Oppenheimer
Mummy (voice)
Joan Gerber
Dreadonia Witch / Woman at Store (voice)
Mimi Seaton
Screamer (voice)
Sven Libaek
"The Werewolf Rock" Singer (uncredited voice)