Jogo

Jogo is a special grade cursed spirit in Jujutsu Kaisen, and one of the most powerful antagonists in the early-to-mid parts of the series.

He has a volcano-like head (with an actual erupting crater on top), a mostly humanoid but clearly inhuman body, and red skin with black markings. Jogo is extremely prideful, hot-tempered, and fiercely loyal to his goal of seeing curses dominate humanity. He views himself as far superior to humans and gets easily enraged when underestimated or disrespected.

His cursed technique revolves around volcanic heat and fire:

• He can unleash massive waves of flame
• Create volcanic eruptions
• Shoot concentrated beams of intense heat
• Use domain expansion: Coffin of the Iron Mountain (an open-type domain that engulfs everything in extreme volcanic temperatures)

Despite his overwhelming destructive power, Jogo is often used to showcase how terrifyingly strong the top-tier sorcerers (especially Sukuna and Gojo) really are.

In short: angry volcano-headed special grade curse who wants humans extinct and loves burning everything.