Mangetsu Hōzuki

was a member of the Seven Ninja Swordsmen of the Mist and the older brother of Suigetsu Hōzuki.

Background
Both Mangetsu and Suigetsu trained with the intention of becoming members of the Seven Ninja Swordsmen of the Mist together. This dream acted as their motivation for them both to complete cruel missions day by day. Mangetsu was the first to become a member of the Seven Swordsmen, mastering all seven of the swords before his death. His premature death seemingly demotivated Suigetsu.

Appearance
Mangetsu had white hair and pointed, shark-like teeth; a trait that all known members of the Seven Ninja Swordsmen of the Mist had. He wore a dark sleeveless shirt and light pants. Like his brother he carried a water bottle in a belt around his waist and wore striped leg warmers typical of his village and a Forehead Protector.

Kenjutsu
Mangetsu was a very gifted and talented swordsman, having been accepted into the Seven Ninja Swordsmen of the Mist. According to his younger brother, Suigetsu, he was called the 'Second Coming of the Demon'. His skill, power and chakra were such that all the blades, including Samehada — which is notoriously picky about who wields it — allowed him to wield them. He had great proficiency in using the blades. He even had a scroll that would keep the swords sealed inside them, and can summon them if they are not with their current wielders.

Nature Transformation
Little else is known about his jutsu, but he seems to be a Water Release user like his brother. He was shown using what appeared to be the Hydration Technique against an Allied Shinobi Forces ninja.

Shinobi World War Arc
Mangetsu, as well as his fellow Swordsmen, were summoned by Kabuto Yakushi to fight Kakashi's division in the Land of Hot Water. After a combined attack from the shinobi forces proved fruitless against them, just destroying the coffins they came out of, and summoned the swords for his fellow swordsmen. Then they engaged in battle, and Mangetsu was found over a dead shinobi, using the Hydration Technique.

Trivia

 * means "full moon", and is the Japanese word for the "chinese lantern" or "winter cherry", a fruit which resemble Chinese paper lanterns; like all members of the Seven Ninja Swordsmen, his surname is derived from a type of produce.