Casey Kasem

Shaggy Rogers (voice)

Nicole Jaffe

Velma Dinkley (voice)

Don Messick

Scooby-Doo (voice)

Frank Welker

Fred Jones (voice)

Heather North

Daphne Blake (voice)

Indira Stefanianna

Daphne Blake (voice)

Patricia Stevens

Velma Dinkley (voice)

June Foray

Gypsy Fortune Teller (voice) (uncredited)

Hal Smith

The Phantom / Bluestone the Great (voice)

Jean Vander Pyl

Mrs. Cutler (voice)

John Stephenson

The Black Knight / Museum Worker (voice)

Vic Perrin

Pietro / The Puppet Master (voice)

Barry Richards

Ghost of Geronimo (voice) (uncredited)

Susan Stewart

Helga (voice)

Keye Luke

Zen Tuo / Mr. Fong (voice) (uncredited)

Michael Stull

The Wax Phantom (voice)