Mirror Buster

Mirror Buster (ミラーバスター) is Enker's special weapon. When used by Mega Man, it creates an energy shield in front of him while the attack button is held down. The shield itself doesn't cause damage, but it can absorb an enemy's shots and reflect it back at the one who shot it. This is the only weapon that can hit the Wily Machine's final form in Mega Man: Dr. Wily's Revenge.

Mirror Buster can also be obtained in Mega Man 10, Mega Man being the only playable character able to use it.

Capacity
Activating the Mirror Buster does not cost any weapon energy, unless a shot is actually reflected of it, using 1 weapon energy unit for each reflected projectile. With a full weapon energy gauge, it can reflect 19 shots in Mega Man: Dr. Wily's Revenge.