Casey KasemShaggy Rogers (voice) (archive footage)
Frank WelkerScooby-Doo / Fred Jones (voice) (archive footage)
Mindy CohnVelma Dinkley (voice) (archive footage)
Grey DeLisleDaphne Blake / Dempsey (voice) (archive footage)
Mark HamillEmperor Caesar Saladicus (voice) (archive footage)
Daran NorrisUgo DiRinaldi / Shopkeeper / Zombie (voice) (archive footage)