Kairo Iga (伊賀 甲斐路, Iga Kairo) is the fifth retainer of the Yanari Shogunate.
A reckless brute of a man.
Since he is contained inside the armor, his appearance cannot be seen.
A former ninja who was from the same group as Emonzaemon Sōda who used a muscle ninjutsu to use Zokutō Yoroi, he was defeated by being lifted off the ground, and hit again, to destroy him and his armor, by Shichika Yasuri.
Swordsmanship Specialist: He wields Yoroi.