Mechazaurus

Mechazaurus (メカザウルス) is the boss of the first part of Wily's castle in Mega Man 6, and guards the front gate of the castle. Mechazaurus attacks by spitting fireballs and shoots platforms from the chest. The weak spot is its eyes, but they are at times hard to hit.

If Megaman is equipped with the Rush Power Adapter, he can charge up his punch to hit the platforms back at the Mechazaurus, dealing 1 point of damage each time.