Kakuzu

Treasurer of the Akatsuki, Rogue Ninja of the Village Hidden in the Waterfalls

Kakuzu is a 91-year-old man who is very tall, tan-skinned man with long dark brown hair. His eyes have an unusual coloring: green pupils and red eyes. Noticeably, despite his advanced age, he still appears as a man well within his prime, retaining a very muscular build. He wears a black mask over his lower face, covering his mouth which is stitched together in a Glasgow smile. He dons a white hood which covers his long, black hair. His clothing includes the traditional Akatsuki cloak, the Takigakure forehead protector with a scratch in the middle, which symbolizes that he is no longer loyal to it, and grey pants with matching shinobi sandals. He also wears black nail polish, and a dark green Akatsuki ring with the kanji for "north" is placed on his left middle finger. Underneath the Akatsuki cloak, he wears a tight, black halter top. The various stitches on his body are the result of the unique technique that he possessed — the Earth Grudge Fear.

Kakuzu is a possessive, greedy, and materialistic individual, arranging goals in terms of the highest profit he could gain from them, and is often unwilling to involve himself in something if there is nothing to gain from it, as well as claiming that he tended to forget opponents who were not worth any money after he was done with them. He even remarked that money is the only dependable thing in the world. Kakuzu is also rather impatient and cantankerous, quickly growing angry with anything he deems as unnecessary or wasting time. Due to his obstreperous temper, Kakuzu often kills anyone close by when enraged, having killed his previous partners and even took their hearts to extend his own life. Despite his obsessive personality and violent rages, Kakuzu is much very cautious, not arrogant, and never mindlessly rushing into battle. Due to his obstreperous temper, Kakuzu often killed anyone close by when enraged, having killed his previous partners and even took their hearts to extend his own life. Therefore, Hidan is the perfect partner for Kakuzu, because of Hidan's inability to die. Kakuzu's somewhat indiscriminate attack style also makes Hidan an ideal partner, since Kakuzu didn't need to worry about catching his partner in the crossfire.

Kakuzu has strong steel threads running throughout his body. He can use them to throw people and dig into their organs to capture their heart. He can also harden his body at will and the hearts can separate from his body to form bipedal creatures that can attack his opponents with various elemental techniques. Kakuzu is also biologically immortal and can only be killed if all five of his hearts are destroyed.