Jeffrey "Jeff" Fungus is the (former) tertiary antagonist of Monsters, Inc. He is Randall's henchman.
Fungus is very afraid of Randall, always screaming in fear and / or shaking when Randall screams at him. Oddly enough, despite being one of Randall's henchmen, Fungus has always been somewhat reluctant to assist him.
At the end of the first film, Fungus redeems himself after Randall and Mr. Waternoose's defeat.
- Fungus is often thought to be a minor antagonist in the first film.
- His first name Jeff is first revealed in Monsters University.