Season 1

Billy Vera

Slickis (voice)

Bronson Pinchot

Deitrich Dunlap (voice)

Bill Fagerbakke

Carl (voice)

Jim Belushi

Simon the Monster Hunter (voice)

Tim Curry

Zimbo (voice)

Lacey Chabert

Girl (voice)

Kath Soucie

Blorp 2+4 / Woman (voice)

Gregg Berger

The Gromble (voice)

Michael Dorn

Borl / Chauffer (voice)

Shelley Duvall

Ocka (voice)

Charlie Adler

Ickis (voice)

Christine Cavanaugh

Oblina (voice)

David Eccles

Krumm / Snorch (voice)

Beverly Archer

The Library Monster (voice)

Edward Winter

Dr. Buzz Kutt (voice)

Marcia Strassman

Harryette (voice)