Frank Welker

Scooby-Doo / Fred Jones (voice) (archive footage)

Mindy Cohn

Velma Dinkley (voice) (archive footage)

Grey DeLisle

Daphne Blake (voice) (archive footage)

Casey Kasem

Shaggy Rogers (voice) (archive footage)

Don Messick

Scooby-Doo (voice) (archive footage)

Nicole Jaffe

Velma Dinkley (voice) (archive footage)

Indira Stefanianna

Daphne Blake (voice) (archive footage)

Jennifer Hale

Leora Lasswell (voice) (archive footage)

Jean Vander Pyl

Sarah Jenkins (voice) (archive footage)

James Arnold Taylor

Burr Batson / Champ Truman (voice) (archive footage)

Eddie Deezen

Gibby Norton (voice) (archive footage)

James Horan

Dr. Fleg / Bandit (voice) (archive footage)

Fred Tatasciore

Skeleton (voice) (archive footage)

John DiMaggio

Mike Fury (voice) (archive footage)

Frankie Ryan Manríquez

Jimmy (voice) (archive footage)

Victoria Bruno

Cindy (voice) (archive footage)

Rodger Bumpass

Announcer / Steve (voice) (archive footage)

Hal Smith

(voice) (archive footage)

Vic Perrin

(voice) (archive footage)

John Stephenson

(voice) (archive footage)