Michael J. Fox as Marty McFly : A high school student and aspiring musician. He is the average teenage American who lived an average life before he met Doc.
Christopher Lloyd as Dr. Emmett Brown : An scientist experimenting with time travel. He is a crazy guy who has brilliant ideas that care potentially dangerous, so he if often in hiding.
Lea Thompson as Lorraine Baines : A 1955 teenager who grows into Marty’s unhappy, alcoholic mother.
Thomas F. Wilson as Biff Tannen : A 1955 high school bully turned George’s 1985 boss.
Crispin Glover as George McFly : A nerdy 1955 high schooler who grows into Marty’s cowardly, submissive father. Bullied by Biff, he cowardly carries himself through high school and his adult years.
Claudia Wells as Jennifer Parker : Marty’s girlfriend from the 1980s who doesn’t know he can time travel
