**Thomas F. Wilson (born 1959)**, known as **Tom Wilson**, is an American actor, comedian, and voice actor. He is universally recognized for the iconic role of **Biff Tannen** – and his descendants Griff and Buford 'Mad Dog' Tannen – in the *Back to the Future* trilogy (1985-1990).

These characters solidified his reputation as an actor portraying bullies, over-the-top antagonists, and menacing comedic figures, an archetype he made memorable with a mix of bluster and clumsiness. Beyond Biff, Wilson has had a prolific career in supporting roles in numerous films and television series, often in the comedy and action genres. He has also lent his voice to numerous characters in animated productions, demonstrating a versatility that extends beyond his most celebrated role.