Ryomen Sukuna (両りょう面めん宿すく儺な Ryōmen Sukuna?), more often called just Sukuna (宿すく儺な Sukuna?), is a mighty cursed spirit known as the undisputed King of Curses (呪のろいの王おう Noroi no Ō?). He serves as one of the primary antagonists of Jujutsu Kaisen.

According to a legend, during the golden age of jujutsu over 1,000 years ago, Sukuna was an Imaginary Demon (仮想かそうの鬼神きじん Kasō no Kijin?), though in truth was a human sorcerer, and other sorcerers gave their all to defeat him. After his death, he became a cursed spirit, and his curse was too strong for his body to be fully destroyed. Henceforth, his remains of 20 indestructible fingers, preserved in grave wax, traversed the ages as cursed objects, ever growing in power. In the present, Sukuna has been incarnated into Yuji Itadori due to the latter eating one of his cursed fingers, which contain his fragmented power.

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Appearance

His past appearance is described as a demon with four arms and two faces. Currently, he appears similar to the host he is in, but with spiked hair and with unique markings on his forehead, nose, cheeks, and torso. He also has a second pair of eyes under his normal eyes, which are usually closed. Sukuna also has two lines on both his wrists, upper arms, circles on both his shoulders with a dot in each, two-segmented curve lines on his chest, and two lines are his stomach while possessing Yuji.

Sukuna wears a light-colored kimono with a black edge, a black scarf, and black shoes.

Personality

Sukuna is selfish, cold-hearted, immoral, and exceptionally sadistic. When he was reincarnated shortly after Yuji ingested his finger, he commented, implying the slaughter of women and children and likening them to maggots crawling around. Due to his immense power, he rarely cares about the consequences of his actions, even if these affect his host, Yuji Itadori. In fact, he frequently taunts and insults Yuji, calling him a brat and even laughing at or enjoying Yuji’s despair on multiple occasions.

Sukuna is aware of his immense power and is quite arrogant about it, brutalizing a finger bearer while being patronizing and proclaiming his superiority over it. For this reason, he is highly dismissive of his opponents and rarely takes them seriously, even explicitly stating he would kill Satoru Gojo to his face. However, these brutish traits are not to be confused for stupidity. 

Sukuna is highly intelligent and manipulative, taking Yuji’s body hostage by tearing out his heart to force him into a Binding Vow. He has also displayed the ability to acknowledge and praise his opponents, as shown by how before killing Jogo he acknowledged he was strong despite having completely overpowered him and that he should be proud.

Abilities and Powers

Overall Skill Level: Sukuna is a special grade cursed spirit. As the most powerful cursed spirit, Sukuna has a vast amount of cursed energy.

Incarnation (受肉じゅにく Juniku?): Sukuna will incarnate into whoever eats his fingers, gaining a physical, human body in the process. Upon Yuji consuming the first of his fingers, Sukuna immediately came to possess his body.

Immense Strength: In Yuji’s body, Sukuna possesses tremendous physical strength and managed to fling a person through several building floors without effort. Even in an incomplete state, he easily overpowered the likes of a finger bearer, a special-grade curse.

Immense Speed: Sukuna has shown to move at incredible speed, which his opponent didn’t even notice that Sukuna has moved until it is too late.

Immense Reflexes: Sukuna can easily counter any opponent and is fast enough for his opponent to not even realize that their limb has been cut off.

Immense Durability: Even in Itadori’s body, Sukuna can use cursed energy to bolster his host’s resilience. Sukuna was punched through five buildings and shown to be completely fine.

Metamorphosis: Sukuna can create new eyes and mouths on his host, allowing him to see and speak without controlling the body of the host. For example, he made a single eye and fanged mouth on Yuji’s left cheek to belittle and taunt him.