Tansui

His arowana heritage gives him an unusually broad frame, an enlarged lower jaw, and skin of a faint pink, with scales spread over the back of his skull. Everyday wear for him means swim briefs, a green fur cloak, several necklaces, and a belt on which the word Alowana is printed. Back when he ran with the Sun Pirates, his cloak instead bore vertical stripes.

Blunt to a fault, he voices his thoughts without restraint, which grates on both Macro and Duval. He stands apart from most fish-men in the tale because selling fish-men and merfolk into bondage stirs no guilt in him, a coldness shared by the rest of the Macro crew.

Like any fish-man he carries roughly ten times a human's raw strength, a figure that doubles once he is submerged, yet he ranks among the weaker sort, since Hatchan dispatched him and his two crewmates with ease. He can reportedly wield Fish-Man Karate, but he is beaten before ever putting it on display, and during his Sun Pirate days he fought with a dagger.

Long before the Macro Pirates existed, Tansui was one of the fish-men serving under the Sun Pirates, joining their string of raids on the Marines. When a freed human ex-slave called Koala came aboard to sail home to Foolshout Island, he, Gyaro, and Macro all grew fond of her and wept when she departed. Not long after her reunion with her family, a Marine ambush cost the crew their ship and left Tiger mortally wounded; they seized an enemy vessel, but Tiger died of his injuries. Once Arlong was imprisoned and Jinbe rose to captain, Jinbe took a Warlord's seat, prompting Arlong to raise his own crew while the three fish-men split away to found the Macro Pirates, who turned to abduction and the slave trade. Years on, they traded Hatchan a treasure map for Camie, but the octopus judged the map fake, smashed their ship, and freed her, earning their lasting grudge. Later, teamed with Duval and the Flying Fish Riders, they seized Hatchan to bait Camie and the Straw Hats into a trap, only for Luffy to recover Camie and Pappag at once and for the freed Hatchan to send the whole crew flying with a punch each.