Bat

The Bat is a rather common enemy that simply flies towards the player and will not stop until killed. You can kill it in one shot with any weapon, which makes for a very weak and simple enemy.

Strategies
The best thing to do is try to shoot it down as quick as possible, as it will clone itself if it is powered up by Professer Xaiver. Otherwise, it is a simple creature who is not difficult to defeat.

Drops
The bat's spoils aren't the greatest, but the armor is very good. The bat only drops 1-3 coins, and the weapon Bat's Wing only does 1 damage per hit, and is not very hard to obtain. The Bat Armor, however, is very rare, and allows the player to fly. The more pieces of the Bat Armor the player has, the faster they can fly. The bat armor does not give much protection, however. There is only a 2% chance of it dropping the helmet, a 1% chance of dropping the chestplate, and a 3% chance of dropping the greaves.

Trivia

 * The Bat is one of the enemies the Big Demon summons in Don't Look Back.
 * The Bat is the most common enemy in Don't Look Back: The Revenge of Professor Xaiver, yet it is the enemy that only gets powered up by Professor Xaiver twice.