Don Messick

Scooby-Doo (voice) (archive footage)

Casey Kasem

Shaggy Rogers (voice) (archive footage)

Frank Welker

Fred Jones (voice) (archive footage)

Indira Stefanianna

Daphne Blake (voice) (archive footage)

Nicole Jaffe

Velma Dinkley (voice) (archive footage)

Marilyn Schreffler

(voice) (archive footage)

Michael Bell

(voice) (archive footage)

Vic Perrin

Additional Voices (voice) (archive footage) (archive footage)

Jean Vander Pyl

Additional Voices (voice) (archive footage)