Answer
George McFly, portrayed by Crispin Glover, is the father of Marty McFly in the Back to the Future trilogy. He is a kind-hearted but timid and clumsy man who is often bullied by his boss, Biff Tannen. George's life takes a turn when his son, Marty, travels back in time and inadvertently alters the past, resulting in George becoming a more confident and assertive individual.