Lorraine Baines Biff had been after Lorraine for a long time. He tried to ask her to the Enchantment Under the Sea Dance, but he was too late, for "Calvin Klein" had already asked her. In the Alternate Timeline Biff finally does marry her after killing her husband, George McFly. In the normal 2015, Old Biff is still interested in Lorraine, for he says, "Say hi to your grandma for me." just before he leaves the Cafe 80's to who he believes is Marty Jr. In the original 1985, Biff also says this line to Marty before he leaves the house after talking to George.
George McFly George McFly was the guy Biff always picked on and made him do his homework. This continues (although not with homework) all the way to 1985, where Biff is George's Superviser. Back in 1955 Biff also told George where he could and couldn't go ("Hey McFly, I thought I told you to never come in here."), and did the lame "You're shoe's untied!" trick, which George fell for all the time. This changes, however, when George gets the courage to punch young Biff out at the Enchantment Under the Sea Dance.
Calvin "Marty" Klein Though his name is really Marty McFly and is from the future, Biff thinks he's the new kid named Calvin Klein. Calvin becomes Biff's new target in 1955 when he stands up for Lorraine in the cafeteria, trips him in the diner, causes him to crash into a manure truck (twice!), and steals the book that an Old Man gave him earlier Nov. 12, 1955. Biff also gets angry when he hears Calvin is going to the dance with Lorraine, and finds him "parking" with her. He orders his goons to take him away while he takes his place with Lorraine. Calvin also causes more damage to Biff's car on the way home from the dance when he hangs on and flies next to it on the hoverboard and Biff tries to scrap him off by running his car right up against the side of a tunnel. Luckily "Calvin" got out of the way in time.