When his aunt mysteriously vanishes after spending the night at her spooky mansion, 10-year-old Brian McKenzie meets his first monster—clumsy, big-hearted Boo Marang—who jumps from a bedpost and whisks the young boy off to Monster Mania, a land of crazy monsters (located in dark closets everywhere). He helps the monsters battle the evil Osh and a variety of other monsters.
Jeannie Elias
Brian McKenzie / Jamm / Creature Key
Jim Cummings
Boo Marang/Sootybush/Bus
Mark Hamill
Osh / Bellylint / Doorman
Miriam Flynn
Olive McKenzie / Coin #1
Mark L. Taylor
Stan McKenzie / Limo
Tress MacNeille
Gertie / Fudge / Taxi
