Nuclear Detonator is the weapon Mega Man obtains after defeating Dyna Man. It places a time bomb, similar in function to Bomb Man's Hyper Bomb, in the fact that it typically drops down in a slight arc, and explodes after a set time of about two seconds if it does not hit an enemy before doing so. This weapon can also be detonated early by pressing the fire button again, as long as it has landed on the ground at least once. It is Sonic Man's weakness and can kill him in 2 hits (one shot) but is very difficult to hit him with because it bounces more under water.