Sukuna is a cold, ruthless, and bloodthirsty man. He is a curse that is over a 1000 years old, back in his human days he was a sorcerer. But was eventually taken down when all the other sorcerers teamed up together and used all their might. He had four arms, and they cut off all of his fingers. His fingers becoming the holder of fragments of his soul, whoever eats one either dies, he takes control of them, or in the rarest instance, they are able to suppress him. Sukuna is sadistic, twisted.