Suguru Geto
The antagonist, Suguru Geto, appears in both Jujutsu Kaisen and its precursor, Jujutsu Kaisen 0: Jujutsu High. Along with Satoru Gojo and Shoko Ieiri, he had previously studied under Masamichi Yaga at Tokyo Jujutsu High.
Suguru killed more than a hundred non-sorcerers in a single night as a result of an incident that was caused by his experiences as a jujutsu sorcerer. Geto is one of four special-grade sorcerers acknowledged by Jujutsu High, who was formerly a hero before becoming a villain.
Suguru Geto was one of only four special-grade sorcerers, and because of the threat he posed to humanity, he was regarded as the worst curse user. Most of Suguru's adversaries believe that he will engage in shikigami combat and let his cursed spirits carry out the majority of the attack. Suguru takes use of people's misconceptions about his method to surprise opponents with his skill in hand-to-hand combat.
The former hero's real claim to fame is his irrational supply of cursed energy, enabling him to easily command and subdue hundreds of strong cursed spirits. Then, Geto can combine these curses to create the excessively potent Maximum Uzumaki strike. Geto is among the strongest martial artists in Jujutsu Kaisen, even if he lacks a plentiful supply of cursed energy. No wonder he is one of the strongest "Jujutsu Kaisen" characters.