Fred
Daphne
Shaggy
Velma
Mondavarious
Mary Jane
Voodoo Maestro (as Miguel A. Nunez Jr.)
N' Goo Tuana
Sugar Ray (as Stan Frazier)
Sugar Ray (as DJ Homicide)
Sugar Ray (as Murphy Karges)
Sugar Ray
Zarkos
Velma's Friend (as Charles Cousins)
Brad
Old Man Smithers
Scooby (voice)
Scrappy (voice)
Scrappy Rex (voice)
Tiny Henchman
Reporter #1
Reporter #2
Island Emissary
Bartender Dead Mike's
Guy in the Vat
Carol
Training Video Woman (as Holly Ann Brisley)
Training Video Guy #1 (as Robert Diaz)
Training Video Guy #2
Melvin Doo
Co-Ed
Fitzgibbon
Coast Guard #2 (as Michael Caffrey)
Airport Attendant
Airport Family
Spooky Hotel Bartender
Co-Ed Hottie
Autograph Seeker
Cavern Henchman
Henchman #1
Henchman #2 (as Keith Bullock)
Creatures (voice)
Dancer
Dancer (as Steve Holford)
Pamela Anderson (uncredited)
Traveller (uncredited)
Waitress (uncredited)
Extra on Beach (uncredited)
Young Woman in Airport (uncredited)
Toy Fair Kid (uncredited)
Psychiatric Patient (uncredited)