Kenjaku

Kenjaku is one of the primary antagonists of the Jujutsu Kaisen series. He is an ancient sorcerer who pursues the goal of "evolving" humanity via cursed energy, thereby ushering in a new golden age of jujutsu sorcery paralleling the Heian Era.

Using his cursed technique that allows him to transplant his brain into different bodies to possess them, he has inhabited different people throughout the centuries, assuming different identities.