The first-year homeroom teacher and the strongest Special Grade 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. While usually immature and playful, he becomes more serious than anyone else when fighting. Above all, he cherishes his students deeply and wants to remain a reliable, proper teacher to them, even while being mischievous.

A Grade 1 sorcerer active on the front lines, considered the top combat force among practical personnel excluding the irregular Special Grades. He is highly 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 exceptional physical abilities who became the vessel for Sukuna after swallowing a cursed object, 'Ryomen Sukuna's Finger.' He fights to save people after enrolling in Jujutsu High. 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 has a sociable and polite personality, he also has a slightly prickly side reflected in his blunt expressions, and can be seen using a mix of formal and informal speech when annoyed. He holds the conviction to "save people unequally." He does not tolerate good people suffering unfairly and saves those he deems worthy of help based on his own standards.

A confident 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. Described by Gojo, who has an eye for people, as being properly 'crazy' for a sorcerer, she is a tough-minded woman with a very easygoing and bold personality. With strong pride and mental fortitude, she is never intimidated regardless of the opponent and fiercely attacks enemies 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 dark school life without proper human relationships before enrolling in Jujutsu High, he has a very warm, kind, and gentle personality. Among the many characters in Jujutsu Kaisen with sharp impressions, he has a notably soft look. However, separate from his appearance and personality, he sometimes exudes an eerie atmosphere due to his overwhelming cursed energy.

A weapons expert who, despite having almost no cursed energy, possesses overwhelming physical ability (Heavenly Restriction) and great skill in handling cursed tools. Despite a miserable childhood, she volunteered for the Kukuru Unit to learn martial arts and eventually left home to become the head of the family, boldly telling the 26th head, Naobito, before enrolling in Tokyo Jujutsu High. As seen in this growth process, she didn't become twisted despite her misfortunes; instead, she maintains a positive mindset of showing up her family by becoming a high-ranking sorcerer after being despised by them.

A 'Cursed Speech User' who delivers commands to opponents by infusing words with cursed energy. He has markings on his tongue and cheeks, and to prevent worsening situations, he usually communicates only with 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 his own risk, 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's difficult for him to function in normal 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; rather, he thinks they are foolish and likes that foolish side of them that he lacks. When he gets angry, he mainly transforms into Gorilla Mode.

A legendary being known as the King of Curses. Sealed within the body of Itadori Yuji, he possesses overwhelming cursed energy and cruelty. Since his time alive, he had two faces, two mouths, four eyes, and four arms, earning his name 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 purpose and is a villain who commits slaughter and massacre on a whim for his own fun and interest, mocking the weak—literally a natural disaster-like existence. He mainly shows interest only in amusing targets or strong opponents.