Casey Kasem

Shaggy Rogers (voice) (archive footage)

Indira Stefanianna

Daphne Blake (voice) (archive footage)

Janet Waldo

Additional Voices (voice) (archive footage)

Nicole Jaffe

Velma Dinkley (voice) (archive footage)

Don Messick

Scooby-Doo (voice) (archive footage)

Vic Perrin

Additional Voices (voice) (archive footage)

Frank Welker

Fred Jones (voice) (archive footage)

John Stephenson

Additional Voices (voice) (archive footage)

June Foray

Fortune Teller (voice) (archive footage)