Casey Kasem (37)

Shaggy Rogers (voice)

Nicole Jaffe (28)

Velma Dinkley (voice)

Don Messick (43)

Scooby-Doo (voice)

Frank Welker (23)

Fred Jones (voice)

Heather North (18)

Daphne Blake (voice)

Pat Stevens

Velma Dinkley (voice)

Indira Stefanianna (22)

Daphne Blake (voice)

Patricia Stevens (23)

Velma Dinkley (voice)

June Foray (51)

Gypsy Fortune Teller (voice) (uncredited)

Hal Smith (53)

Farmer (voice) / Mr. Greenway (voice) / Big Ben (voice) / The Phantom / Bluestone the Great (voice) / Cosgood Creeps / Green Ghosts (voice) / The Headless Specter / Asa Shanks / Phony Phantom (voice)

Jean Vander Pyl (49)

Swami Customer (voice) / Princess's Owner (voice) / Sarah Jenkins (voice) / Mrs. Cutler (voice) / Candy Mint (voice)

John Stephenson (46)

The Creeper (voice) / Viking Puppet / Pirate Puppet (voice) / Butler / C.L. Magnus / The Ghost of Redbeard (voice) / Professor Wayne / The Caveman (voice) / Stuart Wetherby / Ghost of Elias Kingston (voice) / The Mummy of Ankha (voice) / Mr. Hyde / Dr. Jekyll (voice) / Samson the Strongman (voice) / John Simms / The Witch Doctor / Mano Tiki Tia (voice) / The Black Knight / Museum Worker (voice) / Big Bob Oakley / Dracula / Werewolf (voice) / Sheriff / The Zombie (voice)

Vic Perrin (53)

Dr. Najib (voice) / Carl / The Ape Man (voice) / The Snow Ghost / Fu Lan Chi / Mr. Leech / Yeti (voice) / Pietro / The Puppet Master (voice)

Barry Richards (23)

Ghost of Geronimo (voice) (uncredited) / The Ghost Clown (voice) (uncredited)

Susan Stewart

Helga (voice)

Keye Luke (65)

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

Michael Stull (20)

The Wax Phantom (voice)