Kurotsuchi

is a ninja of Iwagakure and a bodyguard of the Tsuchikage.

Five Kage Summit arc
Kurotsuchi was setting off with Akatsuchi to escort Tsuchikage to the Five Kage meeting, called for by the Raikage. After the Tsuchikage hurt his hips trying to carry his own luggage, Kurotsuchi suggests that he should retire.

When, during the course of the Kage meeting, the Raikage became violent, Kurotsuchi moved to defend the Tsuchikage, taking up a stance behind Akatsuchi.