The primary antagonist across multiple time periods. Biff is a bully who torments the McFly family across generations, representing the consequences of unchecked aggression.

An eccentric scientist and inventor who creates the time machine. Doc is brilliant, enthusiastic, and deeply cares about the consequences of time travel and scientific responsibility.

An eccentric scientist and inventor who creates the time machine. Doc is brilliant, enthusiastic, an...

Marty's father, initially a timid and insecure man who transforms into a confident writer after Marty's intervention in the past.

A typical 1980s teeger who becomes an accidental time traveler. Marty is resourceful, brave, and loyal to his friends and family, though sometimes impulsive when called "chicken."

A typical 1980s teeger who becomes an accidental time traveler. Marty is resourceful, brave, and l...