Remote Mine

From MMKB

Remote Mine is Pirate Man's main weapon. It throws a remote mine that can be controlled using the arrow keys and sticks on enemies and walls, and can be blow at any time by the user. It's Ground Man's weakness. It can also destroy ice blocks. Mega Man and Bass can use only one Remote Mine at time, but Pirate Man can use three Remote Mines in a row. As Ground Man's weakness, it sticks to him even while he's underground.