Fats

Fats is a ghost of a man who died in Moe's Tavern.

History
Moe told Anastasia Alekova that his only friends were the ghosts that came with the bar. The ghost of Fats then appeared and started singing whilst playing the piano. Moe then told Fats to get back into his head, which Fats didn't want to do as there were a lot of dark thoughts in Moe's head. Fats then told Moe that he didn't want to die in the tavern, he just came in to use the phone. He then disappeared along with the other ghosts.