Kenjaku

Kenjaku is an ancient sorcerer who pursues the goal of "evolving" humanity via cursed energy, thereby ushering in a new golden age of jujutsu sorcery. Via his cursed technique that allows him to transplant his brain into different bodies to possess them, he has inhabited different people throughout the centuries, assuming different identities. Kenjaku serves as one of the primary antagonists of Jujutsu Kaisen.

Among those he has possessed was Noritoshi Kamo over 150 years ago, as whom Kenjaku became known as history's evilest sorcerer and a stain on the Kamo Family. Currently, Kenjaku possesses the body of the deceased Suguru Geto—whom he chose for his Cursed Spirit Manipulation—and has assumed his identity as Pseudo-Geto (（）).

Appearance
As Noritoshi Kamo, Kenjaku takes the same appearance as Noritoshi himself, only with a stitched scar running horizontally through his forehead.

As Suguru Geto, Kenjaku takes the same appearance as Suguru himself, only with the same stitched scar through his forehead. It was shown that Kenjaku was able to remove the top part of his head in Suguru's body and reveal his brain.

Personality
While in the body of Suguru Geto, Kenjaku displays a relaxed, cheerful and cocky attitude.

Although willing to work with cursed spirits to achieve his own ends, he reacted negatively when these spirits acted like they were his equal. He proved to be a civil collaborator as he told Jogo and the others exactly what they needed to do and even formed a friendly bond with Mahito. In his spare time Kenjaku would even play board games with them. This relaxed and condescending attitude remained during fights, where he would praise the abilities of his opponents. Although Kenjaku occasionally pauses claiming that he is talking like somebody else. This implies that at least some of his habits come from the original Geto's personality influencing him.

As shown in his conversation with Yuki Tsukumo, Kenjaku believes that the next stage of human evolution is not "removing themselves of cursed energy", but is instead "optimizing cursed energy". This belief being the main reason to his actions and all of his unethical and inhuman experimentation on both cursed spirits and human beings and the main motivation for his current plots.

Abilities and Powers
He was stated by Tengen to be the second most powerful barrier user after himself. He is incredibly knowledgeable about curses and jujutsu, as proven by his experiments with Death Womb Paintings alongside his barrier techniques. His most notable cursed technique allows him to swap bodies with another person, even if they are dead. Once he is inside a body, Kenjaku gains access to all their innate techniques. Even the Six Eyes cannot recognize him as an imposter as he retains the host's cursed energy.

Body Possession

 * Suguru Geto: Currently, Kenjaku has taken Suguru Geto as his host body, effectively giving him access to all of Geto's memories, skills and jujutsu. This is seen where he could now apparently access all of Geto's Cursed Spirit Manipulation techniques.
 * Cursed Spirits: Due to gaining Geto's body, Kenjaku was shown to have acquired numerous cursed spirit's as his personal familiars and has deployed them to fight off numerous opponents and bombard them with a variety of different cursed technique that each spirit possess.
 * Smallpox Deity: While inside Geto's body, Kenjaku has shown to have acquired a powerful special grade cursed spirit capable of creating its own unique Innate Domain. As shown during its battle against Mei Mei, it was powerful enough to nearly corner her if not for the assistance of her brother to distract it to give her a chance to finish it off.
 * Mahito: Later after acquiring Mahito, he was granted access to the latter's Idle Transfiguration technique.
 * Maximum: Uzumaki: The Maximum: Uzumaki technique of Cursed Spirit Manipulation combines the cursed spirits the user has absorbed into one and uses it as a powerful attack of super condensed cursed energy. While at glance it seems to negate Cursed Spirit Manipulation's main advantage, its wide arsenal of cursed techniques due to losing access to the curses used in the attack, its true potential is revealed when used on cursed spirits of semi-grade 1 or higher as Maximum Uzumaki extracts their innate cursed technique, allowing the user to keep the techniques. The author confirmed that if Suguru Geto didn't use the lower level curses to attack the town and instead used them in this attack, he would have beaten Yuta Okkotsu.