Casey Kasem

Shaggy Rogers / Mirror Monster (voice)

Don Messick

Scooby-Doo / Scrappy-Doo (voice)

Glynis Johns

Ms. Grimwood (voice)

Susan Blu

Sibella Dracula (voice)

Patty Maloney

Tanis the Mummy (voice)

Pat Musick

Elsa Frankensteen (voice)

Marilyn Schreffler

Winnie Werewolf (voice)

Russi Taylor

Phantasma (voice)