- For objects with the same name, see Piko Piko Hammer (disambiguation).
Piko Hammer is a Special Weapon exclusively used by Rose Woman in the Sonic the Hedgehog and Mega Man comic crossover, Worlds Collide. When using this move, the user can slam an foe or object with a similar looking Piko Piko Hammer-like hammers. For Mega Man, the robot turns into a red and pink attire with his Mega Buster being replaced with a Piko Piko Hammer. This allows the robot to damage the hardest of material, such as Knuckles Man's knuckle-spikes. When using this move Mega Man turns into a red and pink attire, which matches Amy's color scheme.
During the First National Bank Robbery in Mega City, Proto Man had faced against Knuckles Man, Shadow Man, Tails Man, and Rose Woman. Rose Woman used her Piko Hammer ability to destroy Proto Man, but Mega Man, Proto Man's brother, had saved Proto Man before being slammed down by Rose Woman's Piko Hammer. Rose Woman would then use the Special Weapon once again after ambushing Sonic, Mega Man, Tails, and Rush at a desert somewhere at Skull Egg Zone. She was then be deroboticize by Mega Man's Sonic Shot. Mega Man would then use the Special Weapon for himself to defeat Knuckles Man before he would self-destruct. (WC #1, #2, #8)