Scooby-Doo / Fred Jones / Motoshondu (voice) (archive footage)
Frank Welker
Shaggy Rogers (voice) (archive footage)
Casey Kasem
Daphne Blake / Shawna (voice) (archive footage)
Grey DeLisle
Velma Dinkley (voice) (archive footage)
Mindy Cohn
Crunchy Granville / Fritz / Mr. Keenan (voice) (archive footage)
Jeff Bennett
Maura Ravenmane / Helga (voice) (archive footage)
Mimi Rogers
Sharky Tazo / Stink Eye (voice) (archive footage)
Kevin Michael Richardson
Zelig (voice) (archive footage)
John Stephenson
Captain Corvina Cloyd (voice) (archive footage)
Eva Almos
Dr. Armand Zola / Worker (voice) (archive footage)
John Gabriel
Monroe Hopper (voice) (archive footage)
Mikey Kelley
Sergeant Linda Rauch (voice) (archive footage)
Kathy Nagler