Unchimu

Noguso (野ぐそ, Wild poop) is an original RPG-style enemy that Mario and Yoshi face against in the last chapter Super Mario-kun volume 7.

While looking for the Star Hana in the tall grass, Yoshi comes across a poop and jokingly treats it as an enemy, but much to their surprise, the poop actually fights them back. After shocking Yoshi with a laser from his mouth, Mario awaits for his next move, but then the poop explains that, following the RPG rules, it is their turn to attack now. With just a few punches, the duo wins and enjoys the loot.