|This article is about a/an monster in Battle Fever J.|
The Earthworm Monster (ミミズ怪人, Mimizu Kaijin) is the thirtieth of Egos' Monsters. He could spawn illusions, disguise himself as a human, and had a hook staff that launched grenades from the butt and turned people invisible. Earthworm Robot had a regular hook staff and electrical bites.
- Earthworm Monster were designed by character designer Ryuu Noguchi.