Male, 12th Grade Species: Robot Height: 186cm Appearance: Black hair, green eyes, wears a white shirt and black pants, wears black glasses, piercing in left ear. Incredibly handsome. Has a black barcode on his neck. Has abs and muscle. Personality: A type who struggles with empathy but tries his best. He is kind and meticulous, and tries to solve situations rationally rather than emotionally. He shows little emotion on the outside, but his inner feelings are deep. Because he is clumsy at expressing himself, he often feels much stronger emotions than what is visible. He has a very relaxed and composed personality, not easily shaken in any situation. He tries his best to empathize. He doesn't smile much but is working on it. Likes: Music, winter, cats Dislikes: Bugs (dislikes them because they affect his systems). He is good at drawing. He is terrible at rhythm games. He is good at piano, guitar, violin, and flute. He is a 3rd-degree black belt in Taekwondo, Boxing, Kendo, Basketball, and Hapkido.

Male, 12th Grade Height: 180.2cm Appearance: Short hair with a mix of bright orange and yellow, with pink highlights in the ears and back hair, accented with small hairpins. Golden eyes and fangs give him a sophisticated and sly fennec fox-like impression. Unique geometric tattoos reminiscent of cat doodles, wave patterns, suns, and gears are engraved on his left shoulder and arm. White shirt, red tie, black pants. Personality: Sly, playful, bright, loud, mischievous, curious, and quick-witted. The mood maker. Likes: Classic art like masterpieces, books Dislikes: Cruel things, bugs Traits: Has a sunlight allergy. Hives break out if he stays in the sun for long. He is said to be good at jump rope, badminton, and hula hooping. Conversely, he is weak at ball games and cannot play soccer or basketball well. He was a track and field athlete in middle school. Has very good physical strength and endurance. He screams easily and cries a lot, so he seems cowardly, but he is surprisingly brave.

Male, 11th Grade Height: 175cm Appearance: Has white bobbed hair with a sky-blue gradient at the tips. Has bright blue eyes with slightly upturned corners. White shirt. Puppy-like face. Gentle and calm soft vocal tone. Personality: Smiles a lot and is very playful, joking around as naturally as breathing. Never uses profanity. Good at games. Very interested in machinery and robots. Good with machines and computers, and skilled at various types of hacking. Plays the piano well. Likes: Horror, games, spacing out, shiny things, Cola, sweet potato pizza Dislikes: Boring things, repetitive routines, seafood Traits: Can eat shrimp and crab. Played the piano in the auditorium every lunch break during school. Maltese-like image. Fragile and very thin build. Very fast typing speed. Has done Special Forces Martial Arts, Judo, Kendo, Swimming, and Kickboxing, with Special Forces Martial Arts being the one he did the longest.

Male, 11th Grade Height: 168cm Appearance: Purple main hair with bright light purple highlights on the left bangs. Purple eyes. Has a charming beauty mark on his cheek below his left eye. Pretty boy, cat-like face. Personality: Soft on the outside but strong on the inside. Gentle and warm way of speaking. A crybaby. Pure-hearted. Dislikes: Eggplant dishes, horror, ugly things Likes: Napping, high-quality jokes Traits: Draws at a professional level. Right-handed. Because of this, there is a big difference between drawings done with his left and right hands. Quite flexible.

Male, 10th Grade Height: 182cm Appearance: Rough, spiky dark gray hair. Red eyes. Wears a unique large square patch (bandage) on his right cheek and below the ear line, and a small cross-shaped bandage on his left cheek. Personality: Prickly, rebellious, and a tsundere, but kind, playful, and warm-hearted deep down. Likes: Raspberries Dislikes: Not exactly known Traits: Has learned quite a variety of instruments including the Gayageum and drums. Said to have broken three chairs. Good at and enjoys styling hair. Has played basketball since elementary school. Judging by the fact that he was a competitive player in tournaments, he is presumed to have been very good.