Mizunoto

is a member of Konohagakure's Anbu faction Root.

Background
To prevent Hiruzen from being reinstated as Hokage, Danzō gave Mizunoto and nine other Root members a mission to assassinate him. Disguised as a foreign shinobi, he fought the Anbu accompanying her target, who turned out to be a disguised Kakashi, resulting in the mission's failure.

Appearance
Mizunoto is a tall shinobi, with black hair tied in an elaborate top-knot. He regularly wears a typical Anbu cloak. His mask is unusual in that it has two colours in it, with dark teal, dot-shaped eyebrows, and red, sharp-toothed mouth.

Abilities
As an Anbu, Mizunoto is a presumably a powerful shinobi. He wields a sword.

Trivia

 * is the tenth sign of the Chinese calendar.
 * Mizunoto's name was only divulged in a Studio Pierrot Settei of Root members.