Knowing These Back to the Future Facts Makes You A Genius, McFly

34. High school bully Biff Tanned was played by comedian Thomas F. Wilson. Sick of being asked the same questions about his time filing BTTF, he worked it into his stand-up comedy routine 31. Speaking of Wilson, his character Buford “Mad Dog” Tannen was originally slated to kill the marshall (aka Mr. Strickland) in BTFF III, but the scene was cut after it was decided that it was too dark.