Billy Damnation Alley
Background
Billy is a survivor of the Soviet nuclear bomb strike against the United States. After the strike, he and his father traveled around once Billy's mother died. As they were traveling, Billy's father fell off a cliff and broke both of his legs and Billy stayed with him until his father died.
During the events of Damnation Alley (1977) played by Jackie Earle Haley
While Tanner is driving the Landmaster, he sees Billy staring at him through a shack window and he, Denton and Janice chase Billy. They offer to take him with them and he agrees to go with them if Tanner promises to teach him how to ride his dirt bike. They come to a stop at Ellen's Cafe to try and find some more gasoline and while they are there they are ambushed by Man/Guard, Mountain Man 2 and two other men. Man/Guard attempts to rape Janice, but Billy strikes him in the head with a rock, killing him. Tanner shoots and kills two of the men when Billy sneaks him Denton's pistol that they initially took away, while Denton kills Mountain Man 2 by firing a rocket from the Landmaster in the cafe while he is in it. They continue to Detroit, Michigan to look for spare parts and while they are there the Earth's axis returns to normal causing the skies to clear, but a large flood to erupt. They surface near a lake and while Tanner and Denton are arguing about who is going to ride the dirt bike, a radio message comes on the air from Gloria in Albany. Denton contacts Gloria and she gives them her coordinates and Tanner and Billy get on the dirt bike and ride towards Albany. They get there and are immediately greeted by a group of happy people.