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. 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" and his Tailed Beast be called "Lord Eight-Tails". 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.