Kikuchiyo

Kikuchiyo is the main character from the 2004 anime "Samurai 7". Once a man, he transformed into a robot with a mechanized exoskeleton. Often seen as a clown, Kikuchiyo is a sympathetic figure who sacrificed his flesh to become a samurai. He wields the largest sword, which can also function as a chainsaw, and gains acceptance from Kambei after revealing his background as a farmer.