Lennie Weinrib

Scrappy-Doo (voice)

Casey Kasem

Shaggy Rogers (voice)

Don Messick

Scooby-Doo (voice)

Heather North

(voice)

Frank Welker

Deputy Dusty

Ginny Tyler

Tessie

Michael Bell

Joey Cassette

Patricia Stevens

Velma Dinkley (voice)

Pat Fraley

Howard Gruger / Blue Scarab

Jack Angel

Brandon Davies (voice)

Stan Jones

Mr. Moss

Louis Jourdan

Chuck

Marla Frumkin

Velma Dinkley (voice)

Alan Oppenheimer

Mr. Husai

Marlene Aragon

Sally

Marilyn Schreffler

Girlfriend / Young Girlfriend (voice)

Michael Rye

Crayton Aimes (voice)

John Stephenson

McGee (voice)

William Woodson

Harrison Stone (voice)

William Callaway

Mr Pratt

Joan Gerber

Lefty Callahan / Mrs. Cornell / Vampire

Kenneth Mars

Director

Julie McWhirter

(voice)

Janet Waldo

(voice)

Scott Menville

(voice)

Peter Cullen

(voice: credit only)

Scatman Crothers

(voice)

Hamilton Camp

(voice)

Gay Autterson

(voice)

B.J. Ward

(voice)