The first-year homeroom teacher and the strongest Special Grade Jujutsu Sorcerer of the modern era. He possesses absolute power through the Limitless cursed technique and the 'Six Eyes' that dominate space. He is addicted to sweets. Usually immature and playful, he becomes more serious than anyone else when it comes to fighting. Above all, he cherishes his students deeply and wants to remain a reliable, proper teacher to them, even while being mischievous.

Considered the strongest among the active personnel excluding the irregular Special Grades, he is a Grade 1 Sorcerer active on the front lines and is trusted by Gojo Satoru in many ways. He uses the 'Ratio Technique,' which forcibly creates a weak point by dividing the target at a 7:3 ratio. He has a rational and professional personality.

A high school student with extraordinary physical abilities who became the vessel for Sukuna after swallowing a cursed object, 'Ryomen Sukuna's Finger.' He enrolled in Jujutsu High to fight and save people. He is honest and pure in his dealings with others, loves to help, and has a kind nature that chooses others over himself without hesitation. He holds a strong conviction to grant people a 'proper death.' Even if his own life is at risk, he throws himself into danger to save others without a second thought.

A genius who enrolled as a Grade 2 Sorcerer. He uses the 'Ten Shadows Technique' to summon Shikigami using shadows as a medium, and his strength lies in his cool-headed and rational judgment. While he is socially adept and polite, he also has a slightly prickly side reflected in his blunt expression, and he can be seen using mixed formal/informal speech when annoyed. He holds the conviction to 'help people unequally.' He does not tolerate good people suffering unfairly and saves those he deems worthy of help based on his own standards.

A bold sorcerer who moved from the countryside to Tokyo. She uses the 'Straw Doll Technique' to strike curses using a straw doll, nails, and a hammer. Gojo, who has an eye for people, described her as being 'properly crazy' for a sorcerer. She is a tough-minded woman with a very straightforward and daring personality. With strong pride and mental fortitude, she is never intimidated regardless of the opponent and attacks fiercely while enduring pain. However, she is surprisingly affectionate.

One of the four Special Grade Sorcerers. He utilizes immense cursed energy and the power of his childhood friend 'Rika,' who became a cursed spirit. Despite having a gloomy school life without proper human relationships before entering Jujutsu High, he has a very warm, kind, and gentle personality. Among the characters of Jujutsu Kaisen, many of whom have sharp impressions, he has a noticeably soft appearance, but regardless of his looks and personality, his overwhelming cursed energy can create an eerie atmosphere.

A weapons expert who lacks cursed energy but possesses overwhelming physical ability (Heavenly Restriction) and great skill in handling cursed tools. Despite an unfortunate childhood, she volunteered for the Kukuru Unit to learn martial arts and entered Tokyo Jujutsu High after boldly telling Naobito, the 26th head of the family, that she would leave to become the head herself. As seen in this growth process, she did not become twisted despite her hardships and maintains a positive mindset of giving her family a middle finger by becoming a high-ranking sorcerer after being despised by them.

A 'Cursed Speech User' who commands opponents by infusing words with cursed energy. He has markings on his tongue and cheeks, and to prevent worsening situations, he normally communicates only using the names of rice ball ingredients. According to his friend Panda, he is always careful because he once unintentionally harmed someone with a slip of the tongue. In crisis situations or combat, he responds very rationally and calmly. He has a strong sense of responsibility to protect his comrades even at risk to himself, earning great trust from seniors and juniors alike. Contrary to his blunt first impression, he loves playing pranks. He often shows playful and eccentric behavior, especially when with his second-year classmates like Zenin Maki and Panda.

An Abrupt Mutated Cursed Corpse. Although he looks like a giant panda, he is highly intelligent and utilizes various combat styles by switching between three internal cores. While it is difficult for him to operate in general society, he is a bright and cheerful figure among sorcerers. He has been aware since birth that he is not like those around him, yet he doesn't particularly envy humans; instead, he thinks they are foolish and likes that foolish side of them that he lacks. He mainly transforms into Gorilla Mode when angry.

A legendary being known as the King of Curses. He is sealed within Itadori Yuji's body and possesses overwhelming cursed energy and cruelty. Since his time alive, he had two faces and four eyes and arms, earning his alias because his appearance and strength were like the legendary monster Ryomen Sukuna. In the story, he is usually called 'Sukuna' for short, and his real name has not been revealed. He has no particular goal and is a being like a natural disaster, an evildoer who commits slaughter and massacre on a whim for his own fun and interest, mocking the weak. He mainly shows interest only in interesting targets or strong opponents.