Yahan

a criminal organisation comprised of former samurai from the Land of Iron who left their homeland at some point and became a hired mercenaries.

Abilities
After hiring Yahan, Kokumo upgraded their weaponry for the attack on Otogakure, exchanging their old samurai armor for stolen Iwagakure steam armor and working versions of 's chakra armor. Installing porous metal devices on the right arm and stolen Getsugakure special gauntlets on the left. Their face masks are designed to act like respirators to combat poison regularly used by shinobi, and to communicate using inbuilt radios.

Wardrobe
Yahan members have a very distinct attire, which could give them away if a village is informed of their presence. They wear a unique type of armor that depletes chakra from ninjutsu and genjutsu while at the same time augments the wearer's chakra, the red armor covering the arms and legs is plated. A porous metal gauntlet is located on the right arm, on the left arm a gauntlet which is able to both petrify anything that it touches and telekinetically manipulate stone. The armor contains a furnace in its back, the armor is also seen rebounding and guarding against thrown projectiles which require no chakra in the least, raising the question of what exactly the armor is based on.