Michael Andrew Fox, known professionally as Michael J. Fox, is a Canadian and American activist and retired actor. Beginning his career as a child actor in the 1970s, he rose to prominence portraying Alex P. Keaton on the NBC sitcom Family Ties (1982–1989) and Marty McFly in the Back to the Future film trilogy (1985–1990). Fox went on to star in films such as Teen Wolf (1985), The Secret of My Success (1987), Casualties of War (1989), Doc Hollywood (1991), and The Frighteners (1996). He returned to television on the ABC sitcom Spin City in the lead role of Mike Flaherty (1996–2000).

Alex P. Keaton is a fictional character on the American television sitcom Family Ties, which aired on NBC for seven seasons, from 1982 to 1989. Family Ties reflected the move in the United States away from the cultural liberalism of the 1960s and 1970s to the conservatism of the 1980s. This was particularly expressed through the relationship between Young Republican Alex and his hippie parents, Steven and Elyse Keaton.