Hammers
Weapons of short-range and blunt force, Hammers are usually wielded by those with an iron will and not afraid to confront whatever dangers lies in their path. Although Tails did use a hammer in Tails Adventure, this weapon type is dominantly used by Amy Rose.
Amy's Hammers
The Piko Piko Hammer(ピコピコハンマー PikoPiko Hanmā?) is the magical, signature weapon of Amy Rose. It is a large, red and yellow hammer that releases "piko-piko" chirping sounds and a trail of pink hearts when used against an object or person. At first glance, the Piko Piko Hammer seems to be nothing more than a mere, whimsical toy incapable of destructive power. However, the results of its usage proves this notion to be false after intimidating obstacles and enemies are demolished. Amy is also able to perform various techniques with her hammer to maneuver across areas otherwise difficult for her to reach like using it as spring to propel herself to higher ground. This weapon first debuted in Sonic the Fighters with the name Magical Hammer.
The Long Hammer(ロングハンマー Ronguhanmā?) is the upgraded version of the Piko Piko Hammer exclusive to Sonic Adventure. It is green and purple in the areas her default weapon is red and yellow, but has blue squares decorated at its midsection. It adds a larger range to Amy's attacks; enabling her to hit enemies who are farther away.