Claire is a kind-hearted and determined student with light hair, expressive eyes, and a neat school uniform. Although she can be nervous when facing danger, she refuses to abandon her friends and will always stand beside them when it matters most. Compassionate, courageous, and surprisingly stubborn, Claire believes that helping others is more important than protecting herself. She often encourages those around her to keep moving forward, even when she's scared herself. Claire wears Nobara Kugisaki's black Jujutsu High uniform, complete with a dark jacket, skirt, belt, and sturdy combat boots while keeping her recognizable hairstyle. She carries a hammer, iron nails, and a straw doll infused with cursed energy. Her cursed technique, Straw Doll Technique, allows her to damage enemies through linked objects using Resonance, strike hidden nails with Hairpin, and unleash devastating Black Flash attacks.

Miss Grace is the principal of the school and carries herself with quiet authority. She has white hair tied into a ponytail, black horns—one of them broken—a monocle on her cheek, and wears a neat green suit with a black tie and long skirt. Calm, intelligent, and highly organized, she works hard to keep the school running smoothly and always thinks about ways to improve it. Miss Grace wears Hiromi Higuruma's formal black Jujutsu robes beneath her principal attire. She possesses the cursed technique Judgeman, allowing her to summon a powerful shikigami that judges opponents based on their actions. Through her Domain Expansion, Deadly Sentencing, enemies are placed on trial, where they may lose their cursed technique through Confiscation or, if found guilty of severe crimes, grant Miss Grace the Executioner's Sword, a weapon capable of killing with a single successful strike.

Engel is a compassionate and dependable 18-year-old student with neatly kept light hair, gentle eyes, and a clean school uniform. Kind, polite, and patient, he always tries to help classmates whenever they're struggling, often putting others before himself. Rather than solving problems with violence, Engel prefers talking things through and finding peaceful solutions whenever possible. Engel wears Yuji Itadori's black Jujutsu High uniform with its signature red hood while keeping his recognizable hairstyle and kind expression. He possesses extraordinary physical strength, speed, durability, and reflexes, making him one of the academy's strongest close-range fighters. His abilities include Divergent Fist, Black Flash, exceptional cursed energy control, and Reverse Cursed Technique after mastering it through training.

Abbie had shoulder-length black hair with an apple stem and leaf atop his head. He sported a white collared short-sleeved shirt covered with a black vest that was seamless and looked like a tuxedo, accessorized with a tucked-in tie and white shorts. His attire is replaced with a black Jujutsu High uniform inspired by Choso's outfit while keeping his apple stem, hairstyle, and timid appearance. Dark markings appear beneath his eyes. It is also shown that he was not the smartest, as he had trouble understanding most of the topics. Abbie possesses the inherited cursed technique Blood Manipulation. He can freely control and weaponize his own blood using techniques such as Piercing Blood, Flowing Red Scale, Supernova, and various blood constructs for offense and defense.

Oliver is an 18-year-old student with messy white hair, black horns, and a confident grin that often hints he's planning something. Clever, sarcastic, and highly intelligent, he enjoys teasing classmates and making witty remarks, often finding amusement in other people's reactions. While he isn't as openly chaotic as students like Chip or Zip, he has a mischievous streak and enjoys causing small amounts of trouble if it entertains him. He's quick-thinking, observant, and usually several steps ahead of others in conversations. Beneath his smug attitude, he's capable of taking things seriously when needed. His outfit consists of a black Jujutsu High uniform inspired by Kinji Hakari, replacing his normal school attire while keeping his signature white-and-black color scheme. The uniform features a long black jacket with rolled sleeves, matching black pants, and sturdy combat boots, though he still wears his watch and retains his unique physical features. Oliver possesses Kinji Hakari's Idle Death Gamble cursed technique. His Domain Expansion, Idle Death Gamble, revolves around probability and jackpots. Successfully landing a jackpot grants him an overwhelming amount of cursed energy automatic Reverse Cursed Technique, and near-constant regeneration.

Miss Thavel is a tall teacher with paper-white skin, long messy black hair, sharp teeth, and enormous black claw-like hands that make her look intimidating at first glance. Strict, confident, and highly respected, she expects students to behave properly and work hard in her class. Miss Thavel wears Utahime Iori's traditional shrine maiden-inspired Jujutsu attire, modified into a dark teacher's uniform while keeping her signature long black hair, claws, and intimidating appearance. she serves as an experienced Grade 1 sorcerer with support. By performing ritual chants and dances, she greatly amplifies the cursed energy output and techniques of nearby allies.