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