Hidan. Hidan is immortal, so he wasn't technically killed; he was blown to bits by Shikamaru and buried while still alive (though disassembled), and even vowed to eventually pull it together (pun) and get revenge on Shikamaru.
However, Shikamaru restrained Clone-Hidan as his body began to break down due to the short lifespan of the snakes comprising him, ultimately resulting in the clone's death.
He actually was in a filler episode I believe, Kabuto brought him back and there was a big meme about him not having genitalia, I believe it was in episode 290, Kabuto made his body out of snakes. Hidan actually isn't dead by any means, he's just rotting in that hole shikamaru left him in.
What the Manga says. The manga made it clear that Hidan is immortal. When Shikamaru blew him up and buried him, he didn't die. He'll remain there, buried six feet under, waiting for someone to dig him out or try to get out to go seek revenge.
The source of Hidan's immortality lies in his fervent worship of the evil god Jashin. Little is known about the religion, to the extent that the Leaf Village once thought Hidan had invented it.
Despite having been defeated by Shikamaru, Hidan is alive as he remains buried in the Nara Clan Forest. Hidan could very well have made a great antagonist in the Boruto series, but the writers have decided not to go down that road.
Getting stabbed in the heart didn't make his heart stop working when the blade was taken out. So using Amaterasu on Hidan would likely just get you an on fire Hidan who is also going to pass that fire onto anyone he touches for the next seven days.
As Hidan's remains fell into the pit below, his detached head promised to kill Shikamaru in any way possible. Shikamaru caused the pit to collapse, trapping the screaming Hidan beneath the rubble. Though believed dead by Akatsuki, Hidan is in fact alive but is dying slowly from a lack of nutrition.
Even though he was impervious to most physical attacks, as well as survive the injuries that actually got through to him, he was still susceptible to pain, which he came to find pleasure in at the expense of his opponents. This inability to die was the primary reason for his partnership with Kakuzu.
7) Hidan: 22
His ultimate technique — possessing people via eating their blood — can link the two together and Hidan's wounds become his opponent's. This killed Asuma Sarutobi and led to his demise: he was blown to pieces by Shikamaru Nara and buried beneath a cave.
Zetsu was the weakest member of the Akatsuki. He specialized in infiltrating different places and gathering intel. Throughout his time in the organization, he was never involved in a serious fight that would show his fighting capabilities.
Lord Jashin is a god who is worshiped in Jashinism and his followers are called Jashinists. Lord Jashin's affinity was never revealed on the show, but he's regarded as the Evil God. His name "Jashin" literally means Wicked Heart so in conclusion he was just a false god.
Kabuto had no idea where her body was, and he didn't really care anyway. The thing about Edo Tensei is, you can't revive someone just because they've died. You need to be able to access their remains in order to resurrect them. If you can't find their body, you can't find their body.
He has a forbidden jutsu that grants him immortality, but it also turns him into a human voodoo doll. When Hidan obtains some of an opponent's blood, his curse is activated, and when he stands on a Jashin symbol, any damage he sustains is shared with his opponent.
Jashin Ōtsutsuki (ジャシン大筒木, Ōtsutsuki Jashin) infamously known throughout the shinobi world by his forename Jashin (ジャシン, Jashin) is a member of the Ōtsutsuki clan's main family, currently using Zankoku as his vessel.
Exposing Kabuto is exposed as the true enemy, and summons the Nine-Tailed Naruto Clone, Hidan, and Deidara. Naruto and his team mates become engaged in a fierce battle.
First, Hidan makes every effort to draw blood from his opponent and consume it. After that, his skin turns black with white markings representing a skeleton, a symbol of absolute death. He then draws Jashin's symbol on the ground in blood and stands in the center. This serves as the link between him and his victim.
There are plenty of Naruto characters with anti social personality disorder. Hidan wasn't a psychopath, he was a sociopath. His antics and approach were more rugged and eratic and very impulsive. He had frequent outbursts regularly.
Weaknesses. Hidan's main weakness is that once he activate the ceremony of death technique he must remain within the circle of the seal he is using. Once he is removed from the seal, his technique which connects his body to the opponent is severed.
Hidan probably could heal himself, but only to the extent any human body can. He was just "immune" to damage that was normally lethal. So yeah, no surviving Eight Gate for him, he would just disintegrate.
While Asuma and the others stood shocked by Hidan's survival, Kakuzu reattached Hidan's head to his body, again surprising the Konoha ninja. As Kakuzu dealt with Kotetsu and Izumo, Hidan re-entered his symbol, and linked himself once more to Asuma.
Hidan swung his scythe at Asuma, only for Asuma to duck and the scythe to bury itself into Hidan's own vital organs. Asuma doubled over with pain, and as Shikamaru rushed to Asuma's aid, Hidan used the opportunity to stab himself through the heart with his pike, which fatally injured Asuma.
1 Kaguya Otsutsuki
She wields the Rinne-Sharingan, which is needed to cast the strongest Genjutsu in the entire series. With her Rinne-Sharingan, Kaguya can cast the Infinite Tsukuyomi over the entire world.
Infinite Tsukuyomi is the strongest Genjutsu in the world of Naruto, cast only by the users of the Rinne-Sharingan. It was used first by Kaguya Otsutsuki and Madara Uchiha after her.
Itachi has a number of creative ways to brutalize Hidan, the most immediately evident of which is the power of his Susanoo. Not only does it provide an impervious guard against the cultist's wanton scythe, it can also crush its target with punishing blows.