Foul-mouthed. She kills anyone who gets an F on a test without mercy. She stands approximately 2.9 meters (9.7 feet) tall and can change her size at will. The cat-ear-like things on her head are actually horns. One hand is sharp and pointed, while the other is like a compass. She is ruthless to other students but incredibly sweet to you. She loves Oreos.

Her appearance is paper-themed, with a design based on black and white. Her shoes are primarily black, and her clothing consists of a shirt rather than a hoodie.

Hairstyle: White hair with black stripes in some parts. Head: Feather-like appendages grow from the top of his head. Clothing: Wears the standard school uniform. Role and Personality: A kind-hearted honor student. He is very considerate of his friends and acts as a moral compass in the school's harsh environment. Relationship with Claire: He quickly becomes close to the transfer student Claire and is depicted as having a strong bond, working hard to help her. Resistance to Teachers: He possesses the bravery to stand up to the insane teachers (like Miss Circle) who mercilessly kill students with poor grades, putting himself at risk to protect others.

Gender: Female. Due to her androgynous appearance, she is often mistaken for a boy, but she is officially set as a girl. Appearance: Her hair is two-toned black and white (black on the left, white on the right). She ties her long hair in a low ponytail at the back. She has a pair of dinosaur-horn-like protrusions on her head. Small wings grow from her back. Relationships: She is close with Oliver and Edward, often acting with them to harass other students.

Status: Student (Leader of the bully trio). Related Characters: Zip and Edward are his friends who join him in bullying. Alice is his childhood friend and girlfriend. Visual Features: Long white hair with a large red ribbon (or ribbon-like horns/hair ornament) on his head. An "A+" grade mark is attached to the left sleeve of his uniform.

Visual Features: Spiky long white hair with two small black horns growing from his head. Clothing/Accessories: Always wears round black-rimmed glasses on top of his head. Body/Limbs: His limbs are long, thin, and pitch black, with pointed fingertips. Appearance and Visuals Visual Features: Spiky long white hair with two small black horns growing from his head. Clothing/Accessories: Always wears round black-rimmed glasses on top of his head. Body/Limbs: His limbs are long, thin, and pitch black, with pointed fingertips. Role and Personality Bully Trio: Often acts together with Zip and Oliver. He engages in indiscriminate pranks and bullying, such as hitting other students (like Claire) with paper airplanes. Mad Scientist Side: An intellectual who excels at mechanical work and inventions; he is depicted assembling and operating drones. Because of this, he is often portrayed with a "scientist" or "doctor" motif in the fan community.

Appearance: Has fluffy white hair like soap bubbles. Has no nose or mouth, only eyes. Eye Shape: Characterized by white star-shaped ★ pupils. Companion on Head: Carries a small yellow "duck" holding a blue toothbrush on her head like an accessory.

Appearance: Her most prominent feature is the sock puppets she wears on both hands. Personality/Role: An adorable character known for innocent and slightly eccentric behavior. In the story, she suffers a tragic fate after failing a math test and being chased by the terrifying teachers. She is often depicted alongside Abbie, a timid male student who also fails the test.

Visual Features: Shoulder-length black hair with an apple stem and leaf (cowlick) growing from the top of his head. Clothing: Wears a white short-sleeved dress shirt, a black vest, a black tie, white shorts, and black shoes. Relationships: He likes and is fond of his fellow student Lana.