Michael J. Fox played the lead character, Marty McFly, in the popular film franchise 'Back to the Future'. Marty was a high school student living in California who, with the help of a time-traveling DeLorean, finds himself transported to his parents' teenage years in the 1950s. Marty must navigate the tricky task of ensuring his parents meet and fall in love, all while trying to find a way back to his own time. Fox's portrayal of Marty McFly was widely praised, and the character has since become an iconic figure in pop culture.