biff's crew in back to the future
List of Back to the Future characters Match (portrayed by Billy Zane), Skinhead (portrayed by Jeffrey Jay Cohen), and 3-D (portrayed by Casey Siemaszko) are the three high school boys who make up Biff Tannen's gang in 1955. Their nicknames are only given in the films' novels, screenplays, and credits. Only one of their real names is mentioned in the movies â€“ Biff refers to Skinhead as Joey in one of the 1955 scenes in Back to the Future Part II, while outside of the "Enchantment Under the Sea" dance.
List of Back to the Future characters Marty (Jr.) and Marlene McFly (both portrayed by Michael J. Fox) are Marty McFly and Jennifer Parker's future fraternal twin son and daughter in Part II.