Kikuchiyo

A robot, once a man, who paid to have his body forged with a mechanized exoskeleton, much like the Nobuseri. He is often looked upon as a clown or a bother; he gets angry easily and often causes trouble. He carries the biggest of the swords, which also acts as a chainsaw when need be. At first rejected by the other six, Kambei accepts Kikuchiyo into the fold when the latter reveals his reasoning for helping the villagers - that he, too, came from a family of farmers. He is a largely sympathetic character, having literally given up his flesh to become a samurai and change his fate as a poor farmer. He is well liked by the villagers, especially by little Komachi, who asks him to become her husband when she grows up, a request that he accepts in return for her keeping his (fake) family tree. (wikipedia)