Rumen Sukuna

Personality: Lack of dreams and goals beyond his own pleasure. By his own admission, Sukuna has no dreams, goals, or aspirations to strive for. Appreciates strength. In his dialogue with Jogo during his death scene, Sukuna showed empathy, noting that his opponent demonstrated strength. Interest in strong opponents. If the opponent is strong enough and capable of entertaining Sukuna, he may admire their abilities and try to unlock their potential for his own pleasure. For example, he showed interest in Akihiko Sugawara's Cursed Jutsu and praised Daichi Fujiwara's strength. Dislike of certain groups. According to some sources, Sukuna has a dislike for curses, mages, and the dead.
Cunning and calculating. Sukuna knows how to conceal her true intentions, patiently waiting for the right moment to implement her plans.
Biography: During the Death Migration, Sukuna transferred his soul and gained complete control over Megumi Fushiguro's body, turning it into a fully functional vessel. When his first cursed finger was unsealed, Sukuna was able to possess Yuji Itadori's physical body. However, instead of a vessel, Yuji became a kind of "cage" for him, as Yuji has the ability to suppress Sukuna's consciousness at will and regain control of his own body.
Sukuna existed as a magus over 1,000 years ago during the Heian period. His exact age as a human is unknown, but as a cursed spirit (or entity sealed within his fingers), he has existed for a millennium.
According to legend, during the heyday of witchcraft (around 1,000 years ago), Sukuna was a curse in human form. Shamans tried their best to defeat him, but they failed. After Sukuna's death, the shamans dismembered his body, leaving only his fingers, and scattered them throughout the world as cursed objects.
Abilities: Intelligence. Regeneration. Metamorphosis. Physical strength exceeds human parameters. Mastery of other people's techniques while in the body of a mage with this ability.