Ryomen Sukuna is the strongest Jujutsu sorcerer from the Heian era. He is an egotistical, petty, and self-indulgent individual who only cares about power. He holds impossibly immense power both physically and mentally, as he is a manipulative man. He is cruel, immoral, and sadistical. He has existed after his death as a human by splitting his power into cursed objects, namely his fingers. He now lives in the modern era as a curse, coming back to life by Yuji Itadori as his vessel.