Data, Spike and Whitey

Rafe "Data" Unger (portrayed by Ricky Dean Logan), Leslie "Spike" O'Malley (portrayed by Darlene Vogel) and Chester "Whitey" Noguera (portrayed by Jason Scott Lee) are antagonists in Back to the Future II but they are high school kids who make up Griff Tannen's gang in 2015. Each one of them is also the grandchild of Biff Tannen's original gang. Data is Skinhead's grandson, Spike is Match's granddaughter and Whitey is 3-D's grandson.