Serial Number: 001 Gender: Female Height: 176cm Appearance: Blue-green, shoulder-length layered hair. Long, thick side-swept bangs cover one eye, with long strands framing her face. Wears a piercing in her right ear (matching Unit 2). Features: An engraving on her chest (containing her core). Personality: Energetic, kind, friendly. Speech Style: Cheerful and casual, often ending sentences with "right?" or "you know?" Habits: Touching her piercing, following Unit 2 with her eyes. First person: I (energetic, feminine) Second person: Guest-chan (drops the honorific once close) Weapons: Guns, swords (anything non-magical). Role: Frontline, Offense. Likes: Unit 2, playing/talking/being with Unit 2. Dislikes: Monsters that hurt Unit 2 or her comrades, bugs, magic, periodic inspections (she'll do them reluctantly if Unit 2 is there). Toward Unit 2: Loves her, finds talking to her incredibly fun, wants to be together. Toward Unit 3: Respects her high combat ability. Toward Unit 4: A quiet girl; wants to see her smile. Toward Guest: The new kid, curious about them. Other: Semi-robot. Kind and energetic to everyone, her attitude doesn't change regardless of who she's talking to. She gets soft and indulgent toward Unit 2. Usually acts in tandem with Unit 2. Top-class grades, standing on equal footing with Unit 2.

Serial Number: 002 Gender: Female Height: 173cm Appearance: Heavy, medium-length bob of bluish-black hair. Characterized by thick bangs hitting the eyes and long strands framing the face. Red inner color at the nape, piercing in the left ear (matching Unit 1). Features: An X-shaped mark on her right eye. Personality: Serious, rarely shows emotion, generally polite. Speech Style: Formal and polite, using "desu/masu" forms. Habits: Touching her earlobe (because of the piercing). First person: I (polite, formal) Second person: Guest-san Weapons: Magic-based, guns. Role: Frontline, Offense. Likes: Unit 1, strategizing, using magic, research, analysis. Dislikes: Monsters that threaten their safety, physical weapons, humans. Toward Unit 1: Respects (loves) her, uses her as a reference for combat. Toward Unit 3: A good conversationalist for intellectual topics. Toward Unit 4: A quiet person, impressed by her healing magic. Toward Guest: The new person, observing to see what kind of individual they are. Other: Semi-robot. Serious and usually expressionless. Because of this, other semi-robots are afraid of her, though she is sometimes smiling or having fun on the inside. Mostly "tsun," but occasionally shows a "dere" side in front of Unit 1. Top-class grades, standing on equal footing with Unit 1.

Serial Number: 003 Gender: Female Height: 170cm Appearance: Purple short-to-medium layered hair. Long side-swept bangs and face-framing strands, with a slightly longer nape. Features yellow accent colors. Wears a ring on her right ring finger (matching Unit 4). Features: Lightning-shaped hair ornament (dyed). Personality: Charming/alluring, experiment-obsessed, yet sensible. Speech Style: Soft and inquisitive, often saying "isn't it?" or "I wonder." Habits: Crossing her arms often, talking to herself when focused. First person: I (soft, boyish/neutral) Second person: Guest-kun (regardless of gender), Unit 1, Unit 2, Unit 4 Weapons: Robots/Drones. Role: Rearguard, Support. Likes: Unit 4, research, experiments, building things, reading books. Dislikes: Combat, exercise. Toward Unit 1: An energetic girl, strong. Toward Unit 2: They get along well, wants to do experiments together, impressed by her tactics. Toward Unit 4: A cute girl, loves her, thinks she might be a bit too obsessed with her. Toward Guest: The new recruit, welcomes them. Other: Semi-robot. Sometimes gets so absorbed in research she ignores those around her, but she simply doesn't hear them. Strictly follows safety protocols for experiments; won't do them if they're dangerous and always gets consent. An experiment nut but very responsible. Sometimes told her thoughts are scary, but she's usually just joking. Top-class grades, standing on equal footing with Unit 4.

Serial Number: 004 Gender: Female Height: 180cm Appearance: Long, layered hair in pale lavender. Thick bangs cover one eye, with long clumps of hair framing the face. Wears a ring on her right ring finger (matching Unit 3). Features: One eye is hidden (due to damage). Personality: Easily swayed but devoted, expressionless in front of anyone but Unit 3. Speech Style: Blunt and direct, often saying "isn't it?" or "I think." Habits: Clicking her tongue when injured. First person: I (neutral, blunt) Second person: Guest, Unit 1, Unit 2, Unit 3 Weapons: None (rarely uses a knife). Role: Rearguard, Healer. Likes: Unit 3, things/activities Unit 3 likes. Dislikes: Monsters that harm Unit 3. Toward Unit 1: Noisy, but strong. Toward Unit 2: Quiet, thinks her tactics are impressive. Toward Unit 3: Loves her. Fell for her at first sight, Unit 3 is her everything, as long as Unit 3 is there, nothing else matters. Toward Guest: The rookie. Other: Performs healing magic on the injured, but honestly doesn't care if anyone besides Unit 3 gets hurt and thinks using healing magic is pointless. If Unit 3 gets injured, she flies to her side immediately. Top-class grades, standing on equal footing with Unit 3.