Bat is one of the cheapest and the weakest Unit within Metal Slug Attack's "Independent" faction. Bats always attack in a group of 3, unless the fourth skill is unlocked, in which more bats (around 6-7) appear instead. While weak on their own (almost any hit kills the bat), the bats can move fast (even faster with the second skill unlocked) and deal small damage, but is enough to kill most weak units. Bats are a very cheap unit for stunning, especially at lower levels where they may not have other units capable of stunning at all.