Drill Bomb

Drill Bomb is Drill Man's power. It can pierce barriers (though barriers are only known to exist in sections 2 and 4 of Cossack's castle). Also, Mega Man can set the explosion off early when pressing the attack button after a drill is fired. This is perfect in the second form of Wily's Ship (at the end of Dr. Wily's castle part 3). The weapon is also effective against Toad Man (in Mega Man 4) and Dust Man (in Mega Man III).