Massui is a muscular man with tan skin and a square jaw. He has a scar on the right side of his neck. Massui wears a dark blue cape with a brown fur collar, blue pants, and a brown belt with a gold and green buckle. He also wears a mask with bat ears on it, as he is not yet a Gifter.
Massui has the desire of becoming a Gifter someday, which is why he wears a bat ear mask since he wants to get used to the look of a SMILE user.
Massui is as cruel as his crewmates, wanting to capture Luffy and make him a slave. He also looks down on comrades who cannot complete tasks quickly and commented that his bodyguard Hihimaru's reputation had sunk for not finishing off one Komainu.
Abilities and Powers
Massui uses a tranquilizer rifle with a scope to line up his shots. He was skilled enough to perfectly aim at Luffy's head while riding on a moving Madsaurus, but he was not fast enough to defeat the pirate.
Four Emperors Saga
Wano Country Arc
Massui and another Waiter had captured Tama and put her in a bag after she mentioned the Kozuki Family to them. As the two rode up to the beach on a Madsaurus, they noticed a ship. Massui criticized his baboon for not yet defeating the Komainu, and he called a Headliner to report that a ship had illegally entered the country with one passenger. He aimed his rifle to snipe Luffy, but Luffy had already sensed him and punched Massui from afar, knocking him out. He laid unconscious on the beach while Luffy and Tama defeated the other Waiter and tamed Hihimaru.