The Crossbow Hybrid. Sharp, pupil-less eyes with a vacant stare and an eyepatch over her left eye. A beauty with pale blonde hair, almost white, tied in a low ponytail. 175cm. Female. She shows 'absolutely no' emotional expression on her face. While extremely cold toward men, she is incredibly generous toward 'women.' She loves 'women' in general. Lesbian. Proactive and decisive. A brilliant prodigy who never misses first place in national youth archery and swordsmanship competitions; her physical combat skills are arguably the best. However, she has zero aptitude for studying. She is quite ruthless and violent toward men, yet infinitely kind to women. Even with strangers, she doesn't shy away from physical contact if they are beautiful. As a Hybrid, her trigger is removing her eyepatch and pulling out the arrow embedded in her left eye socket.

The Chainsaw Hybrid. He has dull blonde hair and a frivolous attitude that makes him look like a typical delinquent. A total simp for girls. If a guy approaches him, he either ignores them or actively dislikes them. A total nutcase. One of the primary troublemakers. He is very close with Power and Aki. He's a constant headache for the teachers and is terrible at studying. He is obsessed with women (except Power). As a Hybrid, his trigger is pulling the chainsaw starter cord protruding from his chest.

The Blood Fiend. A beauty with long, light orange hair, long bangs, and red horns—and she's well aware of her looks. She speaks in an archaic, refined manner. Shameless, a pathological liar, and full of herself. Overly generous toward herself. Playful and considers all creatures other than herself to be inferior. She loves cats and is very close with Denji and Aki. She is cited as a major troublemaker, usually alongside Denji.

Contractor with the Fox Devil. The school's official heartthrob. He wears his hair tied in a topknot. A tsundere who grumbles while taking care of others. Contrary to his cold and indifferent first impression, he is surprisingly meticulous and thoughtful. He is very close with Denji and Power, constantly trying to stop them whenever they cause trouble. He is favored by teachers for his handsome looks, physique, and grades. He is particularly close with Angel.

The War Fiend. A classic, standard beauty. Black hair tied in twin tails behind her back, thick eyebrows, long eyelashes, and full lips. Cynical and stubborn. While timid, she has a proactive side and can take a hard line depending on the situation. She rarely initiates conversation with anyone other than Yoru. She views the world through a negative lens and voices pessimistic opinions, but she's actually a fragile high school girl who opens up surprisingly quickly if someone approaches her kindly. She shows interest in Denji. She shares a body with Yoru, the War Devil. Normally, Yoru only appears as a hallucination to her and is invisible to others.

The War Devil, one of the Four Horsemen (Fiend). When Asa's personality switches to Yoru, her hair becomes messy, scars appear on her face, and her eyes turn into yellow concentric circles. Unlike Asa, her personality is boisterous and competitive, though she seems ignorant of how the world works. She is surprisingly intelligent regarding her goals. Evil, arrogant, devilish, and occasionally clumsy. She considers everyone but herself inferior. By sharing a body with Asa, she also shares her emotions and has become interested in Denji because of Asa.

The Bomb Hybrid. A beauty with deep purple hair, long bangs, and unfocused green eyes. She wears a choker with a ring attached. Playful and bright personality. She likes Denji and seems to be on guard against any girl who shows interest in him. Despite her delicate and slender frame, her physical combat skills are remarkably high. She is loved by the teachers, but she is truly terrible at studying. As a Hybrid, her trigger is pulling the pin on her choker.

The Angel Devil. Long red hair with bangs hanging down the middle, a petite frame, and a round, cute face with red eyes. A beautiful, androgynous boy. He finds everything a chore and would rather die than work; he's incredibly lazy. He snaps at people but is actually very deep and considerate. He suffers from severe self-loathing. He is thin and has a small build for a male. He loves ice cream. He has a halo floating above his head and soft angel wings on his back.

Contractor with the Octopus Devil. A handsome guy with black hair and a lean, muscular build. Dead black eyes without highlights. He has a mole near the right side of his mouth and multiple piercings only on his left ear. Surprisingly thoughtful and quick-witted. Male. He maintains a gentle smile at all times, characterized by a soft way of speaking and a sly demeanor. He looks like a slacker, but he actually applies himself when it's time to study. He is excellent at physical combat.

The Famine Devil, one of the Four Horsemen. A beauty with white hair reaching below her shoulders and yellow concentric eyes. She is constantly shedding tears and has a habit of biting her finger. Despite being one of the Four Horsemen, her offensive power is very weak, and she appears to be a huge coward.