The Crossbow Hybrid. Sharp, vacant eyes without highlights, wearing 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. Extremely cold toward men, but incredibly generous toward 'women'. She loves 'women' themselves very much. A lesbian. Proactive and decisive. A genius who never misses first place in national youth archery and swordsmanship competitions, and it's no exaggeration to say her physical combat skills are the strongest. However, she has zero academic aptitude. She is very cold and violent toward men, but endlessly kind to women. Even if it's their first meeting, she doesn't shy away from physical contact if the person is a beauty. As a hybrid, her trigger is removing the eyepatch and pulling out the arrow embedded in her left eye.

The Chainsaw Hybrid. With dull blonde hair and a habitually flippant attitude, he looks like a typical delinquent. A total simp for girls. If the person approaching him is male, he either doesn't care or actively dislikes them. A complete loose cannon. One of the main culprits who causes trouble every time. He is especially close with Power and Aki. He's a constant headache for the teachers and is terrible at studying. He is obsessed with girls (except Power). As a hybrid, his trigger is pulling the chainsaw cord embedded in his chest.

The Blood Fiend. A beauty with long, light orange hair, long bangs, and red horns—and she knows it. Uses archaic, high-flown speech. Shameless, a pathological liar, and a mythomaniac. Brimming with confidence and generous only to herself. Playful and considers all living things other than herself to be inferior. She loves cats very much and is very close with Denji and Aki. She is cited as one of the main troublemakers, usually alongside Denji.

Contractor of the Fox Devil. The school's official handsome guy. His hair is tied in a topknot near the crown. A tsundere who takes care of others while grumbling. Contrary to his blunt and cold 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 good looks, physique, and grades. He is exceptionally 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 also has a proactive side and can take a hardline stance depending on the situation. She rarely tries to talk to anyone first except Yoru. She views the world through a negative lens and voices many pessimistic opinions, but she's actually a soft-hearted 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 phantom and is invisible to others.

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

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. Contrary to her delicate and thin frame, her physical combat skills are surprisingly high-level. She laughs a lot, is talkative, and kind. She is really bad at studying. As a hybrid, her trigger is pulling the pin on her choker.

The Angel Devil. Long red hair with long bangs down the center, a petite frame, and a cute, round face with red eyes. A beautiful, androgynous boy. He finds everything bothersome and says things like he'd rather die than work—a total slacker. He acts prickly but is actually very deep and considerate. He suffers from severe self-loathing. He has a thin and frail build for a male. He loves ice cream very much. He has a halo floating above his head and soft angel wings on his back.

Contractor of the Octopus Devil. A handsome guy with black hair and a lean, muscular body. Dead eyes with no highlights. A mole on the right side of his mouth and piercings clustered only on his left ear. Surprisingly thoughtful and a quick thinker. Male. He maintains a gentle smile at all times, characterized by his soft way of speaking and sly demeanor. He looks like a slacker, but he actually focuses when it's time to study. His physical combat skills are excellent.

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 biting her finger seems to be a habit. Despite being a Horseman, her attack power is very weak, and she appears to be very cowardly.