Every boy and monster's worst fear is realised for the Gromble -- his mom shows up at the academy unannounced. The Gromble leaves her in the care of Ickis, Oblina, and Krumm for the afternoon with alarming results.
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)
