Amy is a scatter-brained teenager in love and has self-prclaimed herself as Sonic's girlfriend. She is dedicated to searching for the bue 'pest'(Dr. Eggman's quote) no matter how fast he runs.
She is always happy(in her own way) but always wants to get her own way- by force, if need be. Her choice of wepon is her beloved Piko Piko hammer sometimes alows her to win, others... I'd just say she fails miserably. But often enough, Sonic is overwhelemed by her temper, and hammer!