Bounty of Boo – credible but non-canon

Boo stands twice normal human height, like every man in the Chinjao family — an elongated skull, not giant blood, whatever his silhouette might suggest to someone reading the file cold. Sai's brother and Chinjao's grandson, he brings his grandfather's own fighting style into the Corrida Colosseum: Hasshoken, fists that strike by vibration rather than raw impact.

His run through Block C fits into exactly two fights. He brushes past Kelly Funk without much trouble, then meets Bobby Funk, who has just absorbed his own brother through the Jake Jake no Mi and now fights with both their strength fused into one body. Boo takes that two-headed hybrid full force and exits the tournament on that loss, with no rematch ever shown since that day.

The family name alone explains the total absence of any line about him. Chinjao ran his own thirty-year vendetta against Garp without ever once being filed as an organized threat; his grandsons inherit the same administrative invisibility no matter which tournament they enter. Sai has since joined the Straw Hat Grand Fleet under a recognized flag — Boo hasn't resurfaced in a single arc since his defeat at the Funk brothers' hands, which closes his file on a question rather than an act: what does the Government even do with a fighter whose only public record is a loss inside a rigged exhibition match nobody involved was ever meant to take seriously?