3-D
From Multiversal Omnipedia
3-D was a bully at Hill Valley High in 1955, so named because he was always seen wearing a pair of 3-D glasses. Along with fellow bullies Match and Skinhead, 3-D was a friend of Biff Tannen and followed him around, doing his bidding, usually helping bully a young George McFly. Although the trio were apparently no longer Biff's friends in the normal 1985 timeline, when the older Biff from 2015 gave his younger self Gray's Sports Almanac in 1955, and in this alternate "Biffhorrific 1985" timeline 3-D remained Biff's friend and served as one of his personal bodyguards at his casino.
