Sukuna
Ryomen Sukuna (両りょう面めん宿すく儺な Ryōmen Sukuna?), more often referred to as simply Sukuna (宿すく儺な Sukuna?), is the main antagonist of the Jujutsu Kaisen series. He was history's strongest jujutsu sorcerer, regarded as the undisputed King of Curses (呪のろいの王おう Noroi no Ō?).
According to legend, Sukuna was an Imaginary Demon (仮か想そうの鬼き神じん Kasō no Kijin?) born over a thousand years ago during the Heian Era, the Golden Age of Jujutsu. In truth, he was an undefeated human sorcerer also known as the Disgraced One (堕だ天てん Daten?),[2] having felled countless other sorcerers that challenged him. After accepting a proposal from Kenjaku to participate in the Culling Game,[3] Sukuna continued existing after death by transforming himself into a cursed object, remaining in a state in which his cursed energy and soul was split into his twenty indestructible fingers.[1]