Batty

Batty, known as "Batroll" (パットロール) in Japan, is an enemy from Mega Man ZX, a bat Mechaniloid that tend to appear out of nowhere in groups and focus their attacks on weakened enemies. According to its database entry, there's an urban legend that says the locations they congregate at are cursed. They appear in Area L and Area N.

Etymology

 * Batty's Japanese name, "Batroll" seems to be a combination of the words "Bat" and "Patrol".