DrillMan is a violent NetNavi that works for the World Three criminal organization. Wily trusts the four TetraCodes to DrillMan to take "Alpha" from SciLab, taking advantage of the weakened security after Mr. Match's attack. He then escapes with Alpha to Undernet 5, and when MegaMan finds him, he says it would be a good chance to avenge his cousin BubbleMan, but is deleted. Bass appears soon after and takes Alpha with him.
MegaMan faces DrillMan again in Castle Wily, World Three's hideout, where he controls a robot to defend the location. After his defeat, he attempts to self-destruct with the robot to destroy both Lan and MegaMan, but ProtoMan appears and deletes him before he could do so.
DrillMan: Undernet 5, and later in WWW Comp 4.
DrillManα: Behind the trader in Undernet 6, after defeating the original.
DrillManβ: Random encounters in Hades Net, after defeating his Alpha version.
DrillManΩ (SP): In the same place as the original in Undernet 5, after completing several quests.
Drill Drive: DrillMan drills into the battlefield through three holes, one on each row, at different timings. One of these drills is DrillMan, giving the player the opportunity to damage him. The drills can be destroyed with breaking attacks.
Triple Hole: Three holes appear at the back of DrillMan's area, and they constantly fire drills down random rows. One of these holes is linked to DrillMan - shooting it will damage him. Once again, the drills can be destroyed with breaking attacks.
Panel Crusher: Three panels on the player's area will flash. DrillMan will then drill through these panels, destroying them, and three rocks will fall on the player.