<P> 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--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 . </P> <P> In the alternate 1985, the three work in Biff's casino as his bodyguards . Each gets his nickname from a distinctive character trait . Match often has a match sticking out of his mouth; Skinhead has very short, close - cropped hair; 3 - D is always wearing a pair of anaglyphic 3 - D glasses (a reference to the 3 - D movies that were popular in the 1950s). </P>

Who plays the sister in back to the future 2