Ickis, Oblina, and Krumm are bored when Gromble's old teacher lectures at the academy. But when they escort him back to the dump, they learn that old monsters are the best monsters.
Charlie Adler
Ickis (voice)
Gregg Berger
The Gromble (voice)
Jim Belushi
Simon the Monster Hunter (voice)
Kath Soucie
Blorp 2+4 / Woman (voice)
Lacey Chabert
Girl (voice)
Michael Dorn
Borl / Chauffer (voice)
Bronson Pinchot
Deitrich Dunlap (voice)
Tim Curry
Zimbo (voice)
Shelley Duvall
Ocka (voice)
Beverly Archer
The Library Monster (voice)
Edward Winter
Dr. Buzz Kutt (voice)
Billy Vera
Slickis (voice)
Marcia Strassman
Harryette (voice)
Bill Fagerbakke
Carl (voice)
