Main Actor
Frank Welker
Scooby-Doo / Fred Jones (voice) (archive footage)
Casey Kasem
Shaggy Rogers (voice) (archive footage)
Grey DeLisle-Griffin
Daphne Blake (voice) (archive footage)
Mindy Cohn
Velma Dinkley (voice) (archive footage)
Miranda Cosgrove
Miranda Wright (voice) (archive footage)
Jeff Bennett
General Niedermeyer (voice) (archive footage)
James Arnold Taylor
Frankie Martin / Shawn (voice) (archive footage)