Taketento

Bug Copter (タケテントウ) are, in a way, upgraded Bladers. They are enemies in Mega Man 4, and they mostly appear in Dust Man's Stage, Drill Man's Stage, and in certain parts of the final stages. They fly straight at first, but when they get close, they lose the propellors and fly toward you in an erratic pattern.

Trivia
Its Japanese name is a combination of taketonbo (Bamboo-copter), and tentoumushi (ladybug). Therefore, its name translation could be something similar to "Bug Copter", "Bamboo Lady", "Bamboo Bug", "LadyCopter", ...

Similar enemies
Enemies similar to Bug Copter.
 * Blader