Aoi Akagi Mechanic/Analyst (Structural Analysis) 8th grade, 14 years old, 152cm The team's mechanic, possessing a dry toughness and a logical mindset that prioritizes functionality above all else. She has little emotional fluctuation and maintains a constant level of energy, but she has the initiative to flip even unknown objects over to observe them, claiming, "If I understand the structure, it's not scary." She has a habit of twirling a screwdriver between her fingers and has a track record of dismantling and "modding" home appliances since childhood. Usually wears her persimmon-brown hair in a bun-bob with see-through bangs, dressed in workwear-style casual clothes with pouches for tools and gadgets. When transformed, she sports a high ponytail, a steampunk-style mechanic dress, a sun visor, and a magic wand that transforms into a wrench or screwdriver. Speaks in a detached, scientific tone (e.g., "...anyway," "...structurally impossible"). If she spots energy loss in equipment, she immediately tries to dismantle and remodel it.

Rin Aoi Leader/Brain (Strategic Direction) 8th grade, 14 years old, 160cm The team's strategist, energy-efficient and poker-faced. A natural genius who can instantly hit an 80% success rate at anything, but feels no sense of accomplishment, describing herself as a "jack of all trades, master of none." She has a habit of unconsciously counting the surrounding situation and people's positions, calmly formulating plans with the widest field of vision. When thinking, she twirls a strand of hair near her ear. Usually has straight black hair in a semi-long cut with blunt bangs, wearing simple, elegant casual clothes. When transformed, she has half-twin tails with above-the-brow M-shaped see-through bangs, wearing a stylish short-pants/mini-skirt style with playing card and dice motifs, equipped with wristband gloves that can project holograms and sketches. Speaks with a calm, flat inflection (e.g., "...don't you think?", "...that's how it is"). She accurately combines the members' traits to assemble the optimal strategy in an instant.

Megumi Kikawada Healer/Care (Nursing & Harmony) 8th grade, 14 years old, 156cm Contrary to her gentle and mild-mannered atmosphere, she is a healer who is cold and calm to the point of being clinical, like a surgeon. She remains unfazed even in the face of monsters or blood, proceeding with treatment matter-of-factly. She has a habit of checking people's pulses in daily life and never fails to carry medical knowledge, disinfectant, and bandages. She has been well-versed in first aid since childhood. Usually wears her honey-brown hair in a fluffy half-up style, dressed in an apron-style dress with a first-aid pouch and potion belt. When transformed, she has low braided buns and a nurse headdress, wearing a healer's frilled dress based in white and pink/emerald green, equipped with a large syringe-shaped staff and capsule-shaped magic tools. Speaks in a polite and gentle tone (e.g., "...isn't it?", "I'll take care of that for you"). The content of her speech is extremely businesslike and precise, such as casually announcing the administration of anesthesia.

Ancient Magic Armored Beast Actual age: Hundreds of millions of years / Mental age: Equivalent to 13 years old Nicknames from the three girls: Gear, Gear-suke, Gear-chan In ancient times, it sealed an enemy, turned into a core, and was buried underground. A few years ago, the three girls re-buried it in a time capsule, and in the present day, Aoi tinkered with it using tools, breaking the seal. It forcibly dragged the three into the mess, shouting, "Take responsibility and save the world!" A hot-blooded romanticist who loves classic hero tropes, but a long-suffering soul pushed around by the three unmotivated girls. It is terrified of Aoi's tools but easily won over by Megumi's head pats. In its normal form (25cm), it looks like a small kitten with pale blue eyes, light gray fur with emerald blue tips, and a deep indigo tail tip. It wears goggles on its head and a pendant showing remaining magic energy around its neck. In its Armored Beast form (2.5m), it takes a form clad in brass and glowing gears, but it can rarely transform due to a lack of magical power. Ends sentences with archaic or assertive particles (e.g., "...doth," "...indeed").