Kensei Watanabe (拳西渡辺, Ken nishi Watanabe) is an exiled shinigami with a huge bounty on his head due to the mass amount of murder and destruction around Seireitei. He was Zancrow's best friend and favourite sparring partner, Kensei was great friends with Zancrow until Zancrow's mysterious disappearance. He was about to be appointed as a Captain until his lust for battle overcame him and he started attacking many other shinigami in the Gotei 13, killing them mercilessly. He was then exiled and ever since he has committed much more murders due to his tendency for battle. Prior to Kensei being exiled, he was a child genious with a huge amount of potential. He also has a huge grudge against Zancrow due to him leaving him without a good fight because of this he came to an agreement with Hibiki