Buford “Mad Dog” Tannen is the main villain of Back to the Future 3. He is the ancestor of Biff Tannen, and he is played by the same actor.
I will say Thomas Wilson looks so much different as Buford than he did as Biff.
Like his future great great whatever grandson, Mad Dog Tannen eventually picks a fight with Marty McFly.
I enjoyed watching Marty get the upper hand on him. After that he’s arrested for whatever crimes he’s committed which are a lot.