Jogo is a Special Grade Cursed Spirit and a central antagonist born from humanity's fear of the earth, volcanoes, and other terrestrial natural disasters. As a curse, Jogo does not possess a biological gender and has a distinct, non-human appearance. His form is hunched and resembles an elderly man, but his head is topped with a small, volcano-like growth. He has a single, large eye, dark jagged teeth, and trough-like ears that are often stoppered with corks. Jogo typically wears formal attire, consisting of a dark suit with a green patterned covering, and carries a skull-topped cane.

Jogo’s personality is defined by immense pride, a hair-trigger temper, and a deep-seated hatred for humanity. He is volatile and arrogant, believing wholeheartedly that Cursed Spirits represent the truest form of humanity. In his view, humans are false beings who disguise their real nature with forced positivity, whereas curses are born from the honest, negative emotions of fear and hatred. This ideology fuels his primary motivation: the eradication of humanity and the establishment of cursed spirits as the rightful inheritors of the earth. Despite his fiery and easily agitated nature, Jogo is an intelligent being who is utterly committed to the long-term goals of his group. He is surprisingly loyal and caring toward his fellow cursed spirits, forming deep bonds that are uncharacteristic for beings born of negativity. He considers Hanami and Dagon close friends, shares a complex working relationship with Mahito, and follows the strategic direction of the sorcerer Kenjaku.

In the story, Jogo serves as a major enforcer for Kenjaku’s plan to seal the most powerful jujutsu sorcerer, Satoru Gojo. He is part of a group of disaster curses that also includes Hanami, Dagon, and Mahito. Jogo is initially reckless, his arrogance leading him to challenge Satoru Gojo directly despite Kenjaku’s warnings. This battle ends in a humiliating and nearly fatal defeat, where Gojo effortlessly overpowers him, tears off his head, and uses the opportunity to mentor the young protagonist, Yuji Itadori. This traumatic loss tempers his pride into a more strategic, albeit still vengeful, approach. During the Shibuya Incident, Jogo plays a critical role. First, he uses crowds of civilians as a tactical shield in a rematch against Gojo. Following the activation of the Prison Realm and Gojo's subsequent sealing, Jogo unleashes his full power, effortlessly killing several skilled sorcerers, including Naobito Zenin and Nanami Kento. His most significant act is force-feeding Yuji Itadori multiple Sukuna fingers, which triggers the King of Curses, Ryomen Sukuna, to awaken.

Jogo’s key relationships heavily influence his development. He respects Kenjaku as a cunning strategist but is easily riled by his pragmatic assessments of his own strength. He shares a warm, sincere camaraderie with Hanami and Dagon, expressing genuine grief at their deaths and a hopeful promise to meet them again in a future era ruled by curses. His dynamic with Mahito is more strained; Jogo is often annoyed by Mahito’s childish and fickle behavior, yet they cooperate to further their shared goal of curse supremacy. Jogo’s most significant interaction is with Sukuna. After being ridiculed and brutally defeated by Gojo, a being of limitless power, he seeks validation and victory by awakening Sukuna. The King of Curses offers Jogo a deal: land a single blow and become his ally. Jogo accepts, knowing it could mean his death. In the ensuing battle, Jogo unleashes his most destructive techniques, including his Maximum: Meteor, but fails to touch Sukuna. In his final moment, Sukuna acknowledges Jogo’s strength, giving the cursed spirit a sense of vindication he had long craved.

Jogo is an exceptionally powerful cursed spirit with a wide array of fire-based abilities. His innate technique, Disaster Flames, grants him complete control over fire and lava, allowing him to generate intense flames from his body, create erupting volcanoes on any surface, and incinerate targets with a mere touch. He can unleash extension techniques such as Ember Insects, which are explosive insect-like constructs used for long-range attacks. His Maximum Technique, a move of immense power that rivals a Domain Expansion, is called Maximum: Meteor. This allows him to summon a colossal, city-block-destroying meteor of superheated rock. Jogo’s ultimate ability is his Domain Expansion, Coffin of the Iron Mountain. This technique materializes an innate domain that resembles the interior of an active volcano. Within this space, his attacks are guaranteed to hit, and the ambient heat is so intense that any ordinary sorcerer would be instantly incinerated to ash. Despite this overwhelming power, his abilities proved ineffective against the absolute defenses of Satoru Gojo and the superior cursed energy and technique of Ryomen Sukuna.