Killer Bee is a muscle-bound shinobi from Kumogakure and the Jinchūriki of the Eight-Tailed Beast. It is hinted he comes from the Yotsuki clan. He appears to dislike light. On his right shoulder, he has a tattoo that says "iron" (鉄, tetsu); and on his left cheek, he has a tattoo of a bull's horn (correspondingly, the Eight-Tails has horns like a bull, and the left one is missing). He also carries seven swords and has a brother who is the Raikage. It seems that he demands respect from others and asks to be called "Lord Jinchūriki" (人柱力様, Jinchūriki-sama) and his Tailed Beast be called "Lord Eight-Tails" (八尾様, Hachibi-sama). He also appears willing to speak in song, more specifically in rap style, even when confronted with potential threats. He will even stop in a middle of a fight to write whatever rhymes come to him. He has a casual relationship with the Eight-tailed Beast, frequently engaging in friendly conversation with it.
(Source: Naruto Wikia)
