Bat (Luigi's Mansion)

A Bat is a ghost species that is found in the GameCube video game Luigi's Mansion. Obviously they're in the shape of a real-world bat, and in the game there are two different types of them, each one performing a different attack on Luigi.

Purple Bats
Purple bats can easily be considered the worst of the two, seeing that they'll attack you no matter what. They'll hang from the ceiling for a short while, then swoop down in a pack to attack Luigi. If successful, Luigi will get 5 HP taken away.

Golden Bats
Golden bats will perform the same attack as purple Bats, though will only do so if Luigi's Poltergust 3000 is turned on.