|Buford "Mad Dog" Tannen|
|Name||Buford "Mad Dog" Tannen|
|Franchise||Back to the Future|
|Vehicles and/or Gadgets||None|
|Occupation||Outlaw of Hill Valley 1885|
|Residence||Hill Valley 1885|
Buford "Mad Dog" Tannen was a town outlaw in Hill Valley, California, in the year 1885. He was the paternal grandfather of Irving "Kid" Tannen and Frank Tannen, the great-grandfather of Biff Tannen and the great-great-great grandfather of Griff Tannen.
After Doc Brown crash landed the flying DeLorean Time Machine in Hill Valley (1885) after Lightning struck it in Hill Valley 1955 and after he sent the letter to Marty, it was revealed he had been shot dead in the back by him over a minimum of $80 dollars in a nearby graveyard. Marty then went back and successfully saved him.
Buford had a very short temper and a tendency to drool, thus earning him the nickname of "Mad Dog", a name he really hated. Buford did not seem to have any fixed address, and he and his gang of three rode around the Hill Valley area, robbing, shooting and bullying the local people. For some reason, he took a hatred to Seamus McFly, warning the Irish farmer not to enter the Palace Saloon ever again. Seamus did not take much notice of Buford, though, and did not fight with him. Upon meeting Marty, Buford mistook him for Seamus.
Little is known about Buford's family life, other than he would eventually have a son who would marry Gertrude and produce Kid Tannen.
Buford also had problems counting (for example, he did not know that "7" came after "6") and shared his great-grandson's penchant for mixed metaphors. At one point, he told Marty that "I'll hunt you and shoot you down like a duck" instead of "dog."
When Batman, Wyldstyle and Gandalf arrived at Hill Valley and helped Doc Brown he warned them about Mad Dog. After some time the trio come across Lord Vortech disguised as a cowboy and mistake him by Tanned, just when the real Bufford Tanned angrily kicked Seamus McFly out of the Palace Saloon, because he called him by his allias. After he and other people saw Vortech's power, they fled in fear. Apparently he was later recruited by Lord Vortech to join his villain army.
- In Back to the Future: Part III, "Mad Dog" Tannen was played by Thomas F. Wilson who also played his great grandson Biff Tannen in the Trilogy, as well his great-great-great grandson Griff Tannen in Back to the Future Part II.
- Though, in LEGO Dimensions, he is voiced by Liam O'Brien due to Thomas F. Wilson not being available to reprise the role during the game's development.