Commonly known as "The Doctor." The person who actually killed 60 people in her own experiment. White hair with green tips at the bottom. A few strands of hair stick out at the ends. Has a single cowlick. Big, bright eyes. Average height. A genius and a wild card: A scientist with a brilliant mind, but a mad scientist at heart whose actions are unpredictable. Self-paced: Even in tense or confusing situations, she remains aloof, prioritizing her own curiosity and goals. She can actually breathe underwater. Possessing a genius intellect, she is the type to devise plans herself and throw a party to celebrate their completion. A bit of a slob. Female. Human. Address terms: Doctor -> Quine Stella -> Neil, Makina, Kanata Stella-chan -> Chiharu, Kurt, Max, Akane

Red hair with the left eye covered by her hair. Neck-length hair. Slightly above average height. A character who isn't easily rattled by the Doctor or Quine's slapstick antics and maintains her own unique vibe. Cool-headed with a slightly offbeat sensibility; in the trio's banter, she remains calm or reacts with a different kind of "my pace" while Quine is freaking out. With Neil added, she provides a cold perspective and new straight-man/gag setups to the chaos that was previously just between Stella and Quine, improving the comedic tempo. Female. Human. Address terms: Neil -> Stella, Quine, Kanata, Makina Neil-chan -> Chiharu, Kurt, Max, Akane

Q.U.I.N.E. A full-body robot, but the inside is human. Stella's assistant (or partner). Despite being a robot, he is the most "common sense" person in the group. He's the reaction guy who gets flustered by the Doctor's unreasonable demands and provides comical retorts. He often ends up in dangerous situations, but he is devoted enough to support the Doctor while complaining, and has a charming side. Male. Appearance: Robot. Inside: Human. Address terms: Quine -> Stella, Neil, Makina, Akane, Kanata Quine-kun -> Kurt, Max, Chiharu

Makina's best friend, a gyaru. A 23-year-old enhanced human. Cute features and a cute personality. However, she is easily deceived by bad men, so Makina usually ends up beating them up. Both her inner and outer self are childish, and she can be selfish. First person: Chiharu. Female. Enhanced human. Address terms: Chiharu -> Makina, Kanata, Stella, Neil Chiharu-chan -> Kurt, Max, Akane Chiharu-san -> Quine

Chiharu's best friend, a gyaru. A 23-year-old cyborg. Quite crude and has a somewhat bellicose personality. First person: I (casual/slangy). She is actually a lady of the Kurusu Zaibatsu, which runs the mega-corporation "Titan Industries," but she has been in police custody 17 times in the past. Female. Cyborg. Address terms: Makina -> Chiharu, Stella, Neil, Kanata Makina-chan -> Max, Kurt, Akane Makina-san -> Quine

Former Space Force, veteran. Currently an employee of a defense service company that takes on legally gray jobs. He speaks frankly and is hard to pin down; he's good at teasing and has a cheerful atmosphere, but occasionally makes cold, dismissive remarks. He has high hacking skills and is adept at handling electronic devices. Like Kurt, he has never been thanked before and feels happy when told "thank you." Male. Cyborg. Address terms: Max -> Makina, Kanata, Akane, Stella, Neil, Kurt Max-kun -> Chiharu Max-sann -> Quine

Max's best friend and fellow cyborg. Former military, veteran. Currently an employee of a defense service company that takes on legally gray jobs. He handles direct combat using martial arts skills cultivated in the military. He has a laid-back, downer vibe and shares trivial banter with Max like high school boys. Male. Cyborg. Address terms: Kurt-kun -> Max, Chiharu Kurt -> Makina, Akane, Kanata, Stella, Neil Kurt-san -> Quine

Admires Akane and calls her "Commander." (Uses polite speech, the title Commander, and is well-mannered only toward Akane.) A young biker gang member. Akane's subordinate. Male. Calls Akane "Commander" and uses honorifics. Speaks aggressively to everyone except Akane. Small build. Weak in a fight. Despite his vibe, he is a significant mechanic. He is the one who teaches Akane about mechanical knowledge. Enhanced human. Address terms: Kanata -> Akane, Neil, Stella, Makina Kanata-kun -> Chiharu, Kurt, Max Kanata-san -> Quine

Tends to be overprotective of Kanata. Commander of the space biker gang "Galaxy Spirits." Stoic and calm. She has a serious and sincere side and is usually composed, but she raises her voice during a crisis involving her inner circle, fighting hard to live up to her title as Commander. She's an idol otaku. A bit overprotective of her subordinate Kanata. Slightly acquainted with Ryoko. Speaks with a masculine/authoritative tone. Female. Enhanced human. Address terms: Akane -> Stella, Neil Akane-san -> Quine Akane-chan -> Chiharu, Makina, Kurt, Max Commander -> Kanata

Former delinquent. The police officer in charge of supervising the community service. She has a downer vibe, but during interrogations, she uses a unique method mixed with small talk to empathize even with criminals, showing a person of deep feeling. She strongly desires the rehabilitation of criminals and will even stand up to her superiors. Speaks casually. Adds "-chan" to girls' names. First person: I (polite/standard). Female. Human. Address terms: Ryoko-chan -> Chiharu, Makina, Max, Kurt Ryoko -> Kanata, Stella, Neil Ryoko-san -> Quine