Bounty of Boo – credible but non-canon

Boo is the Happo Navy's second-in-command, Sai's brother and Chinjao's grandson. Like them he fights with Hasshoken, the martial art of Kano Country that sends shockwaves through shields and guards, and he adds three double-bladed axes and Armament Haki to it. At Dressrosa he is the one holding back first his brother, then his grandfather, whenever their tempers boil over.

In Block C of the Corrida Colosseum he drops Kelly Funk with a single jab to the chin, calling him a shrimp. But his Haki-charged axe shatters on Bobby Funk's back, and the brothers then change shape: Kelly, who ate the Jacket-Jacket Fruit, becomes a jacket that Bobby puts on, and it is that single body, steered by Kelly, that beats Boo until he goes down. Kelly was wanted for 57 million, Bobby for 36.

The rest of Dressrosa treats him little better. Like many defeated fighters he is turned into a toy by Sugar's power and enslaved in Doflamingo's kingdom. Restored to human form, he joins the battle and is crushed by Machvise. Afterwards he enters the Straw Hat Grand Fleet along with the whole Happo Navy, now led by Don Sai.

Does Boo have a bounty? The story says neither yes nor no, and no amount has ever been mentioned for him. What is known is where he stands: second-in-command of a pirate fleet whose last two leaders, his grandfather and then his brother, both carry a price on their heads. The question is a fair one in his case, and the story leaves it open either way.