Kazuzu Akatsuki

Kakuzu

(角都, Kakuzu) is a former ninja of Takigakure and the partner of Hidan. He has a deep love for money, and uses his membership in Akatsuki as a means to seek out valuable bounties. Because money is the only thing he relies on, Kakuzu dislikes needing to be partnered with someone in Akatsuki. He has killed all of his previous partners in fits of rage, and thus was paired with the immortal Hidan so he wouldn't need to keep finding a replacement. Kakuzu's body is composed of large amounts of black threads, allowing him to sew things (such as Hidan's dismembered body parts) back together. The threads are also capable of piercing flesh, which Kakuzu uses to remove the still-beating hearts of his opponents for his personal use. By integrating these healthier organs into his body he can escape death and extend his life indefinitely. Hearts that he is not using are stored in animal masks sewn to his back. The masks can be detached during combat situations to shoot elemental blasts at his opponents, and can quickly be recalled to his body if he needs their heart. Kakuzu's masks are systematically destroyed soon after his introduction by a group of Konohagakure ninja. After Naruto Uzumaki leaves his final heart on the brink of failure, Kakuzu is easily finished off by Kakashi Hatake.