Mushy

Mushy, known as "Chamush" (チャマッシュ) in Japan, is a virus from the Mega Man Battle Network series that moves only on grass panels and attacks by spreading spores around itself. It moves close to its victim and emits these spores. If it is placed in a position where no grass panels are available on the field, it will become immobilized. Its higher forms are able to use the Grass Stage chip to change the entire battle field to grass panels.

Battle Chips
Spice, known as Bad Spice (バッドスパイス) in Japan, is the Battle Chip from Mushy viruses. It spreads harmful spores on all grass panels.

Mushy also has a Battle Chip from the Virus Breeder.