Glover played George McFly, the main character Marty's father. Glover didn't want to return to the role because of moral issues that he had with the story. Instead of just recasting George, they hired someone as a "body double" and used molds that were taken from Glover's face for prosthetics to make a "mask" of Glover to use on the actor. He sued them for violating his rights and privacy and settled for $760k.