Piko Hammer

Piko Hammer is the Special Weapon used by the Roboticized Master Rose Woman in the crossover Worlds Collide. The weapon converts the users hand into a powerful hammer for smashing, and can also be used to deflect some weapons. Mega Man focused on acquiring this weapon when both Rose Woman and Knuckles Man ambushed the heroes while their self-destruct protocols were active in the hopes that it would prove to be Knuckles Man's weakness. It proved capable of shattering the metal knuckles of Knuckles Man's Sharp Knuckle weapon and permitted his defeat with seconds to spare.