Three young monsters — Ickis, Oblina and Krumm — attends an institute for monsters under a city dump and learn to frighten humans.

Charlie Adleras Ickis (voice)
Christine Cavanaughas Oblina (voice)
Gregg Bergeras The Gromble (voice)
Jim Belushias Simon the Monster Hunter (voice)
Kath Soucieas Blorp 2+4 / Woman (voice)
Lacey Chabertas Girl (voice)
Michael Dornas Borl / Chauffer (voice)
Bronson Pinchotas Deitrich Dunlap (voice)
Tim Curryas Zimbo (voice)
Michael Price
Steve Skrovan
Roger Eschbacher
Bruce Kalish
Gary Glasberg