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)

Stefanianna Christopherson

Daphne Blake (voice)

John Stephenson

(archive footage)

Jennifer Hale

Leora Lasswell (voice) (archive footage)

Ian James Corlett

(voices)

Jean Vander Pyl

Sarah Jenkins (voice) (archive footage)

Hal Smith

(Additional Voices)

James Arnold Taylor

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