Amy Rose, also known as Rosy the Rascal, is a fictional character that appears in the Sonic the Hedgehog series. She is an anthropomorphic hedgehog with a major crush on Sonic the Hedgehog. Since meeting Sonic on Little Planet, Amy has become his self-proclaimed girlfriend and has attempted to win his heart by any means during their adventures. She wields the Piko Piko Hammer, which she uses with skills second to none and never leaves home without. Amy is a cheerful, though slightly erratic girl, with a positive attitude and boundless energy. However, she has a scary temper and her infatuation with Sonic makes her short-sighted and a bit obsessive about him, having followed him everywhere since meeting him. Nevertheless, she has a pure heart and will not let anything stop her.