Energy Cannon

Energy Cannon is a Cannon enemy from Mega Man ZX. It appears as a yellow hatch on the ground until it opens its top and fires a sphere of energy from another sphere inside. If left undestroyed, the energy sphere will grow larger in size each time it opens to fire. The sphere can also be fired in almost any direction to follow the player. Energy Cannons appear in Area E Power Plant, Area J Ocean, and Area D Highway.