Tenzen's Bodyguard

He was the bodyguard of Tenzen Daikoku and he wielded Zabuza Momochi's Kubikiribōchō.

Abilities
He was skilled in kenjutsu and strong enough to handle the Kubikiribōchō with ease, cutting Suigetsu down with one slash. He could also break through a wall with sheer power. Suigetsu noted his envy about that the bodyguard could use the Kubikiribōchō without special training and with brute strength alone.

Itachi Pursuit Arc
Sasuke Uchiha and Suigetsu Hōzuki confronted Tenzen at his castle to obtain the Kubikiribōchō which he claimed at Zabuza's grave when he was originally after Zabuza. Tenzen gave the sword to his strongest henchmen and made him his bodyguard. Tenzen's bodyguard crashed through the wall and slashes Suigetsu with Zabuza's sword but is shocked to see that Suigetsu had survived the slashes due to his unique body. Suigetsu increases the size of his arm and grabs the sword, tossing Tenzen's bodyguard out of the hole in the wall.