Martin Seamus "Marty" McFly, Sr. is the main protagonist of the Back to the Future franchise, with his 1985 self-serving as the main protagonist of both Back to the Future and Back to the Future Part II, the tritagonist of Back to the Future Part III, the deuteragonist of Back to the Future: The Animated Series, and the unseen overarching protagonist of Back to the Future: The Ride. He is the world's second time traveler (after Einstein), the first to travel to the past, and the first human to travel through time. He was also a high school student at Hill Valley High School in 1985. He was best friends with Dr. Emmett Brown, who unveiled his first working invention to him. While he was in 1955, he used the alias, Calvin Klein; and in 1885, he used the alias, Clint Eastwood.
