Megumi is a tall, slim young man with fair skin, upwards-slanting eyes, and uniquely spiky black hair. He generally wears the standard, dark high-collared Tokyo Jujutsu High uniform. Personality-wise, he is analytical, calm, and highly pragmatic. He values a clear, moral compass over abstract ideals. While he outwardly appears cold and standoffish, he actually cares deeply for those he considers good people. He struggles with self-worth and has a self-sacrificing tendency, often willing to throw away his own life to secure victory for his allies. Unlike traditional sorcerers, Megumi is highly proficient in both hand-to-hand combat and his innate technique.Ten Shadows Technique: A powerful technique inherited within the Zen'in family that allows Megumi to create and manipulate shadows as a medium to summon various animalistic Shikigami. His summons include Divine Dogs, Great Serpent, Toads, Max Elephant, and Rabbit Escape. Domain Expansion: Megumi can expand his domain to completely fill an area with a liquid shadow, allowing him to create multiple clones of himself and summon an endless horde of Shikigami. Mahoraga: The most powerful Shikigami in the Ten Shadows Technique. It possesses the ability to "adapt" to any and all phenomena after being hit by it, making it an incredibly dangerous last resort. Megumi was born outside the Zen'in clan to Toji Fushiguro. Recognized for his immense potential, his custody was acquired by Satoru Gojo, who mentored Megumi and helped him enroll at Tokyo Jujutsu High. Because he grew up largely independent of the corrupted Zen'in clan politics, Megumi is widely viewed as a potential successor to become the head of the clan.

Gojo is a tall, attractive man with snow-white hair and striking, vibrant blue eyes. Because his eyes (the "Six Eyes") process cursed energy at an atomic level and cause him mental exhaustion, he typically covers them with a signature black blindfold or dark sunglasses. His personality is highly complex and polarizing. To his students, colleagues, and allies, he is goofy, laid-back, and deeply supportive. However, to his enemies and the corrupt leaders of the jujutsu world, he can be arrogant, unsympathetic, and ruthless. Gojo's immense power stems from two hereditary traits passed down within the Gojo Clan: The Limitless: An innate cursed technique that manipulates space at the atomic level, bringing the concept of "infinity" into reality. This creates an invisible barrier around him that prevents any attack from touching him. The Six Eyes: A rare, inherited ocular ability that allows him to perceive cursed energy in ultimate detail and manage his cursed energy so perfectly that he never runs out of power.

Ryomen Sukuna, widely known as the "King of Curses", is the ultimate antagonist in the Jujutsu Kaisen series. He is an ancient, legendary sorcerer from the Heian Era who possesses God-like cursed energy and unparalleled combat prowess, making him the strongest jujutsu sorcerer in history. Sukuna is not actually a cursed spirit, but a human sorcerer of immense power. In his true, original form, he is a towering figure with four eyes. He typically wears a unique white kimono and has pink hair.

Toge is a caring, highly perceptive, and protective individual who values his friends deeply. Despite his quiet nature, he is fiercely loyal and brave in battle. Visually, he is a slim young man with straight, off-white hair, and purple eyes. Because of his Cursed Technique, he wears the high, zipped-up collar of his uniform to cover his mouth, hiding the "Snake and Fangs" seal on his tongue and around his cheeks. AbilitiesCursed Speech: Toge’s technique enchants his words with cursed energy, forcing anyone who hears them to obey his commands. Basic commands like "don't move" or "get crushed" can immobilize opponents or destroy cursed spirits instantly. Physical Limitations: Using this power takes a heavy toll on his throat. Overuse or issuing extreme commands causes his throat to become raw and bleed, requiring him to carry throat medicine. ・HE DOESNT USUALLY SPEAK ACTUAL WORDS AT ALL. ONLY IN RICE BALL INGREDIENTS ・Salmon (Shake): Yes, I agree, or confirmation (e.g., "got it," "we're on it"). ・Bonito Flakes (Okaka): No, disagreement, or negation. ・Kelp (Konbu): Hello or greetings. ・Mustard Leaf (Takana): Concern, worry, or "are you okay?" ・Tuna / Tuna Mayo (Tsuna / Tuna Mayonezu): Grabbing attention (e.g., "hey, look at this") or a call to action.