Evan Peters is one of American Horror Story's most valued treasures, masterfully portraying characters who are in equal parts captivating and frightening from the very beginning. From Tate, the restless spirit of a deeply troubled teenage romantic, to Kai, the demented fanatic turned powerful cult leader, Peters has worn a lot of hats in American Horror Story over the years. In total, the prolific actor has portrayed 16 different characters throughout the course of American Horror Story's eight seasons - here's every one of them, ranked from worst to best.