Pit Bull Pete (ボス) is a professional fighter and scammer. He appears in episode 272 (287 in the uncut), "Celebrations with Majin Buu".
Pit Bull Pete is a fairly tall, muscular, tan-skinned man with small, beady eyes, a cleft chin, and spiky black hair. He wears a black shirt with torn shoulders, green cargo pants, black sneakers and a pair of red boxing gloves.
Pit Bull Pete is shown to be extremely confident, as evidenced by his belief that he would defeat Majin Buu as well as later when remaining calm when the police surrounded the diamond store that he and his manager are robbing, only losing confidence when he realizes Majin Buu was also in the store.
Majin Buu wants to buy fourteen ice cream cones, but has no money, so he goes looking for money. Soon, he discovers Pit Bull Pete and his manager offering a hundred thousand zeni to anyone who can last for three minutes in a fight against him. Buu, of course, entered the fight, and apparently was the first to do so, as the entry fee is ten thousand zeni, and Pit Bull Pete is a professional. A fan of Mr. Satan's pays the ten thousand for Buu, believing him to be one of Mr. Satan's students. Pete punches Buu repeatedly, but Buu is unaffected, and then Buu slaps him into a brick wall, knocking him out and winning the money. Afterwards, he spends it all on ice cream and tells the shop owner to keep the change.
Later, when Bulma asks him to hold the groceries for her while shopping for jewelry (Vegeta and Trunks ran off because the shopping took more than an hour), Pit Bull Pete and his manager return and try to rob the store, even after they were surrounded by the cops. Pit Bull Pete brags that he killed over a dozen gangs. Bulma warns him that Majin Buu is with her, and they panic when they see Buu (remembering their humiliation at Buu's hands). Pit Bull Pete shoots Buu, although he is unaffected by the bullet, causing Buu to flick the bullet inches from his face while remarking "You dropped this!". Great Saiyaman and Great Saiyawoman arrive to stop the robbery, but they show up too late as Pete and his manager turn themselves in to the police, afraid of having to fight Buu.