Pion

Pion makes her first appearance as a cat-eared girl of extraordinary physical strength, yet her true nature is far more remarkable — she is the embodiment of PIONEER, a deep-space probe once launched by a long-lost human civilization. Through repeated modifications over countless years, she gradually awakened a self-aware consciousness. Principled and fiercely dutiful, she communicates with a distinctly military cadence. Whenever her power reserves run dry, she reverts to her compact monolith form. Eventually, she chooses to journey alongside the protagonist, becoming a steadfast companion through every adventure.