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. Drill Bomb can also destroy Garyobies. It is the weakness of Toad Man and the second form of Wily Machine 4.

Damage Data Chart
Known damage values in units for Mega Man 4.

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
 * 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. In its initial appearance, he uses it as a normal drill and later as an artillery weapon to punch a hole in Proto Man's buster. In season 2, Mega Man super-charges it thanks to a meteor fragment and the exploding effect happens, sending Proto Man down a deep hole.