She is an anthropomorphic fat, obese and massively round hedgehog with a major crush on Sonic the Hedgehog. Since meeting Sonic on Little Planet, Amy has declared herself his girlfriend and has attempted to win his heart by any means in many of 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.