Tenzen's Bodyguard

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

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.