Chōjūrō (長十郎, Chōjūrō) is one of Kirigakure's Seven Ninja Swordsmen of the Mist. He later becomes the Sixth Mizukage (六代目水影, Rokudaime Mizukage; Literally meaning "Sixth Water Shadow").
Despite his membership in the elite Seven Swordsmen group, he is a shy individual and seems to lack confidence in his abilities. He also greatly respects and admires the Fifth Mizukage, as he commented inwardly on wanting to protect her "beautiful smile". By the time of the Fourth Shinobi World War, Mei has noted that he has become a lot more confident in himself as seen when he cut down Black Zetsu without reservation and then declares to the Fifth that as a member of the Seven Ninja Swordsmen of the Mist, he would guard the area with his life.[3] Years later after becoming the Sixth Mizukage, Chōjūrō has seemed to grow well into his new role, appearing much calmer and confident in his abilities.
Chōjūrō has short, tufty blue hair, and dark eyes. He also has pointed, shark-like teeth; a common trait of the members of the Seven Ninja Swordsmen of the Mist as well as apprentices share. He wears square, black-rimmed glasses connected to ear protectors, a blue pin-striped shirt and camouflage pattern pants. Also, he wears his forehead protector on the front of his holster which he uses to carry Hiramekarei. The sword itself is wrapped in bandages leaving only the double hilt visible. He also has shuriken holsters strapped onto each of his legs. During the Fourth Shinobi World War, he still wears the same outfit but changed his forehead protector to that of the alliance's.
Years after the Fourth Shinobi World War, Chōjūrō grew noticeably taller and developed a firmer jawline with some chin stubble. His glasses' frame also became thicker and the ear protectors he wore changed design. He retained his overall attire, but the straps of his swordholster now only covers his left shoulder. Chōjūrō now also wears light grey pants without the dual shuriken holsters.