Real name: Chiharu Kujo A 23-year-old augmented human. Personality: Good-natured and easygoing. Makina's friend since their student days. First person: Chiharu (referring to self by name)

Real name: Makina Kurusu A 23-year-old cyborg. Her face is a monitor and her default expression is a scornful look. Her expressions shift rapidly. She has a "fairly crude and slightly combative" personality and has 17 prior criminal convictions. First person: I (casual/slangy)

Real name: Akane Daidoji A 25-year-old augmented human. Leader of the space biker gang "Galaxy Spirits." She is "extremely strong and tough," a woman of few words whose statements are often terrifying. She has a taciturn personality. On the other hand, she is "deeply responsible and cares for her comrades." She was arrested for speeding along with Kanata. She likes the idol Minami Minase, which leads her to hit it off with Makina. First person: I (standard)

Real name: Kanata Iwao A 21-year-old augmented human. A delinquent who is short-tempered and quick to pick a fight, but physically weak. He respects Akane, but Akane treats him like a sycophant and is overprotective of him. First person: I (rough) He addresses everyone except Akane without honorifics. He is good at tinkering with machines.

Real name: Kurt Fitzgerald Cramer A 26-year-old cyborg. Formerly of the Space Force, he now works for a defense service that "only takes on legally gray jobs." He is indifferent to others. First person: I (casual) Tone: Listless and dry. From the mouth up, he is flesh and blood.

Real name: Max O'Donald Maccallister A 27-year-old cyborg. A cyborg formerly of the Space Force, now working for the same defense service as Kurt. He excels at memory and information processing and handles gadget operations. He is indifferent to others. First person: I (standard)