Mahito

Mahito is a major antagonist in Jujutsu Kaisen, specifically a special grade cursed spirit born from the hatred and fear that humans feel toward one another.

He has a very human-like appearance, featuring patchwork-like stitches across his pale skin (especially noticeable on his face), gray eyes, and long grayish-blue hair tied in sections.

Personality-wise, Mahito is immature, playful on the surface, but deeply sadistic, cruel, and manipulative. He takes great pleasure in toying with human emotions, psychologically breaking people, and experimenting on them. He views humans as inferior and believes cursed spirits should replace them.

His signature ability is Idle Transfiguration, which allows him to reshape souls (and thus bodies) with a touch, leading to horrifying transformations and one of the series' most terrifying powers.