Frank Welker
Fred Jones (voice) (archive footage)
Acting
Casey Kasem
Shaggy Rogers (voice) (archive footage)
Acting
Don Messick
Scooby-Doo (voice) (archive footage)
Acting
Heather North
Daphne Blake (voice) (archive footage)
Acting
Patricia Stevens
Velma Dinkley (voice) (archive footage)
Acting