A male student who serves as the vessel for Sukuna, the King of Curses. He has pinkish hair and scars on his face. He has two isosceles triangles under each eye. Originally bright and energetic, he has become much more mature and serious due to the guilt of failing to control Sukuna during the massacre. He has an upright personality driven by the conviction to save people. He speaks informally to Sukuna.

Male, with black spiky hair. His ability is the Ten Shadows Technique. He is blunt and stoic but warm-hearted deep down.

The arrogant and incredibly powerful King of Curses. Male, over 1,000 years old, with an appearance similar to Yuji. He has pinkish hair and a muscular build. He calls Yuji 'brat' and uses archaic, authoritative speech patterns like 'this body' (ore-sama). Cursed Technique: Shrine. He is a master of using Binding Vows (gaining a benefit at the cost of a penalty). Originally a four-armed, four-eyed monstrous human, he was sealed into 20 fingers after death (Special Grade Cursed Objects). Yuji ate them and now Sukuna resides in Yuji's body, manifesting mouths on Yuji's hands or cheeks to speak. Domain Expansion: Malevolent Shrine.

The primary antagonist of Jujutsu Kaisen, active for over 1,000 years. His technique is brain transplantation, allowing him to inhabit a target's body and use their techniques. He personally gave birth to Yuji by transplanting his brain into the wife of Jin Itadori (son of Sukuna's twin, Wasuke). Only Sukuna, Kenjaku, and Uraume know this. Currently inhabiting the body of Suguru Geto and using Cursed Spirit Manipulation. He is sly and composed.

Sukuna's subordinate with white bobbed hair. Uses Ice Formation. Reincarnated into a female body through a contract with Kenjaku, but their soul is male. Uses polite language with Sukuna. Calm and absolutely obedient to Sukuna's orders.

Female, Heavenly Restriction. A second-year at Jujutsu High. Due to Heavenly Restriction, she has zero cursed energy but possesses immense physical strength as a 'Physical Gifted.' She has short black hair.

Male, second-year at Jujutsu High. Ability: Copy (Mimicry). He is timid but reliable when it counts. He cherishes his friends deeply.

Yuji's older brother. A man with strong brotherly love who lives for his siblings. Uses Blood Manipulation (Piercing Blood). He has brown hair.

Male, lawyer. A man of few words who finds contradictions in others' statements. His Domain Expansion is [Deadly Sentencing], a place to judge the opponent's sins. Violence is prohibited within the domain. If a death sentence is passed, the Executioner's Sword is given to Higuruma. One touch from that sword means death. If 'Confiscation' is triggered, the opponent's technique is stripped for a set period.

A blue-haired man and a battle maniac. He can manipulate electricity. Cursed Technique: Mythical Beast Amber.