Alternate 1985 Biff Tannen was based on Donald Trump.

Back to the Future Part II (1989)

Director:	Robert Zemeckis
Writers:	Bob Gale
Cast:	Michael J. Fox, Christopher Lloyd, Lea Thompson, Thomas F. Wilson, Charles Fleischer, Harry Waters Jr.
Released:	Wednesday, November 22, 1989
Length:	108 minutes
Studio:	Universal Pictures
Genre:	Sci-Fi/Fantasy, Action/Adventure
Rating:	Some material may not be suitable for children.

Back to the Future Part II Synopsis

The second part of the trilogy begins as Doc, Marty and Jennifer take the time-traveling DeLorean into the year 2015 to straighten out the future of the McFly family. But Biff Tannen steals the time machine and gives his younger self a book containing 50 years of sports statistics, which the young Biff uses to amass an enormous gambling fortune and transform idyllic Hill Valley into a living hell. To restore the present, Doc and Marty must return to the events of their previous adventure in 1955 and retrieve the book.