Thomas Francis Wilson Jr. is an American actor, comedian, musician, podcaster and YouTuber. He is best known for playing Biff Tannen, Griff Tannen, and Buford "Mad Dog" Tannen in the Back to the Future film trilogy (1985–1990). He also played coach Ben Fredricks in the comedy series Freaks and Geeks (1999–2000) and voices various characters, mainly villains, on the animated series SpongeBob SquarePants (2001–present).

Biff Howard Tannen is a fictional character and a major antagonist in the Back to the Future trilogy. Thomas F. Wilson plays Biff in all three films as well as the Universal Studios ride, and voiced the character in the animated series. Aidan Cutler played him in the original West End production of the first film's stage musical adaptation, and Nathaniel Hackmann plays him in the Broadway production. Biff is the main antagonist of the first and second films. Biff's great-grandfather, Buford "Mad Dog" Tannen, is the main antagonist of the third.