Jogo, a special grade cursed spirit born from humanity's collective dread of volcanic eruptions and fire-based disasters, merges humanoid and volcanic traits. His head distinctly resembles Mount Fuji with an active crater, pale gray skin darkening to brown at the crown, a single central eye, and ear holes plugged with corks that shoot flames during anger, all set above blackened teeth. He typically appears as a diminutive, hunched figure reliant on a cane, clad in black quarter-sleeved clothing, a yellow-spotted cape, and a white scarf. Ideologically driven, Jogo believes cursed spirits represent humanity's "true" essence as manifestations of raw negative emotions, dismissing human positivity as deception. This fuels his commitment to eradicating humanity for cursed spirit dominance. Despite contempt for humans, he demonstrates fierce loyalty and camaraderie with fellow curses—particularly Hanami, Dagon, and Mahito—whom he views as allies. His arrogance causes him to underestimate opponents, notably Satoru Gojo, whose power leaves him with enduring fear. Hypocrisy surfaces in his violent grief over allies' deaths versus casual slaughter of humans. Jogo allies with curse user Kenjaku (posing as Suguru Geto) for strategy, participating in the Shibuya Incident to seal Satoru Gojo. During this, he employs hit-and-run tactics with Hanami and Choso, exploiting human shields to restrict Gojo's techniques. After Hanami's death, he retreats but later avenges Dagon by incinerating sorcerers Naobito Zenin, Nanami Kento, and Maki Zen'in in rapid succession. To recruit Sukuna, he force-feeds Yuji Itadori ten cursed fingers, awakening the King of Curses. He then challenges Sukuna directly, wagering that Sukuna will join the curses' cause if defeated. Unleashing his ultimate technique, Maximum: Meteor—a colossal flaming projectile capable of leveling city blocks—Sukuna evades it effortlessly. Throughout the battle, Jogo acknowledges his inferiority and avoids his Domain Expansion, anticipating Sukuna's superior domain would overwhelm it. Sukuna criticizes Jogo's ideological goals as limiting his growth but acknowledges his combat strength, noting Jogo ranked among his strongest opponents in a millennium. In his final moments, Jogo envisions Dagon and Hanami, apologizes for their failure, and places hope in Mahito's leadership before disintegrating. Jogo wields pyrokinetic and volcanic manipulation. His presence combusts non-sorcerers; direct contact incinerates most sorcerers. Key abilities include firing lava beams from his palms or summoned miniature volcanoes, deploying explosive Ember Insects, and creating the city-destroying Maximum: Meteor. His Domain Expansion, Coffin of the Iron Mountain, manifests an incinerating volcanic landscape guaranteeing attack accuracy. He also uses Domain Amplification to neutralize enemy techniques. Physically, he exhibits exceptional speed—outmaneuvering Naobito Zenin, ranked among the fastest sorcerers—and high durability, surviving assaults from Gojo and Sukuna. Kenjaku estimates his cursed energy reserves equal 8-9 of Sukuna's fingers.