Bombat

Bombats are bat creatures who reside in Poobah the Pharaoh's Pyramid in Wario: Master of Disguise. They look like a purple winged-bomb creature with eyes and a mouth. They do not hurt Wario, but if Wario is to harm them in any way, they move after Wario, and then explode, which causes damage. According to the game, it was born from an unholy union of ancient biotechnology and modern chemical warfare.

In-game description
''An explosive bat born from an unholy union of ancient biotechnology and modern chemical warfare. These creatures patrol the entire pyramid, ever watchful.''