Drill Bomb

Drill Bomb (ドリルボム) is Drill Man's special weapon. It can pierce barriers (though barriers are only known to exist in sections 2 and 4 of Dr. Cossack's castle). Also, Mega Man can set the explosion off early when pressing the attack button after a drill is fired.

Capacity
In both Mega Man 4 and Mega Man III, one Drill Bomb uses 1 weapon energy unit. With a full weapon energy gauge, it can be used 28 times in Mega Man 4 and 19 times in Mega Man III.

Bosses weak against Drill Bomb

 * Toad Man: Mega Man 4
 * Mothraya: Mega Man 4
 * Cockroach Twin: Mega Man 4
 * Wily Machine No. 4 (form 2): Mega Man 4
 * Dust Man: Mega Man III

Other media
Mega Man uses the Drill Bomb in the Mega Man animated series.