Kakuzu

Kakuzu is a fictional character in the Naruto manga and anime series created by Masashi Kishimoto. He is a rogue ninja from the Hidden Waterfall Village (Takigakure) who becomes a member of the criminal organization Akatsuki. He joins Akatsuki alongside Hidan and serves as one of its more dangerous enforcers.

Kakuzu is best known for his immortality: he keeps five hearts within his chest, each of which was taken from a different ninja. This arrangement allows him to live despite critical injuries and to access multiple chakra nature transformations. He can detach a heart, restoring health, and adjust his power by switching between hearts. His technique repertoire includes the use of multiple elemental natures and the ability to combine them for advanced techniques. The five hearts grant him access to fire, water, wind, earth, and lightning releases, enabling him to use a wide range of jutsu and to fight multiple opponents at once.

In the narrative, Kakuzu and Hidan pursue their assigned targets for Akatsuki, often clashing with Konoha shinobi. His battles reveal strategic cunning and a focus on financial gain due to Akatsuki's missions. Kakuzu is ultimately defeated in combat as the Akatsuki assault on the tailed-beast vessels progresses.