Sukuna, is the strongest jujutsu sorcerer from a thousand years ago. Regarded as the undisputed King of Curses Sukuna is one of the primary antagonists of the Jujutsu Kaisen series. Sukuna is selfish, cold-hearted, immoral, and exceptionally sadistic. When he was reincarnated shortly after Yuji ingested his finger, 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.