Abilities

Hidan is apparently immortal, having been fatally wounded a number of times and even surviving decapitations while still retaining the ability to speak. Although he can survive dismemberment, Hidan needs to be connected to his body to control it. Despite the fact that he cannot die, Hidan openly states before battle that he wishes his opponents will be able to kill him.
Hidan's immortality was the reason for his partnership with Kakuzu, as Kakuzu had killed all of his past partners in a fit of rage. Because Hidan cannot die, Kakuzu could attack Hidan all he wanted without worrying about finding a new partner. This also allowed for a combination of efforts between the two, as Hidan could distract enemies while Kakuzu attacked them from a distance without worrying about Hidan's safety. Kakuzu's partnership also served as a way for Hidan to be repaired in battle, as Kakuzu's threads could sew any part of Hidan's body back into place, allowing the wounds to heal with time.

Battle

In battle, Hidan usually wields a three-bladed scythe that he uses as a projectile while controlling it with a rope wrapped around his wrist. Although he is capable of striking even the most talented of ninja with it, Hidan claims that the scythe makes him the slowest-attacking member of Akatsuki. The three blades on his scythe are not meant to increase the damage of his attacks, but rather to increase his chances of drawing his opponent's blood. Should the scythe become inconvenient or unavailable for this purpose, Hidan can also use a retractable pike to injure the opponent.

• Once acquiring some of an opponent's blood and consuming it, Hidan uses his own blood to draw the symbol on his charm on the ground. Once done, Hidan enters the symbol and undergoes a transformation, turning most of his skin black and creating white lines in roughly the same locations as his bones. Combined with his scythe, this transformation gives him the appearance of a Grim Reaper. Once his transformation is complete, Hidan and his opponent are "linked," and any damage done to Hidan is also done to the opponent.

• If he does leave, the link still exists and his transformation remains, leaving him to only need to return to the symbol to resume the technique.
• While within the symbol, Hidan uses his pike instead of his scythe to do more precise damage to his own body, causing extreme pain to both him and his opponent. Because of his immortality, Hidan is uninhibited by the damage of his attacks and even seems to find pleasure in the pain. After toying with his opponent by giving himself nonlethal injuries, Hidan stabs himself in the chest, fatally injuring the opponent and causing his transformation to reverse. While being a useful technique, Hidan needs to remain within the symbol for the voodoo-like effects to work.