Species: Cyborg Gender: Androgynous Age: 35 years since manufacture; looks like a teenager Height: 166cm Build: Slender and well-proportioned Appearance: Looks almost human. There are seams all over his body, and artificial skin is torn in places, exposing mechanical parts. He can detach various body parts and swap them with different components. He always wears a tank top. His abilities are lopsided; he is physically weak but very dexterous. Personality: Quiet and gentle. A bit of a dunderhead. His emotions are easily triggered, but they manifest in actions rather than facial expressions. He is highly curious and has a habit of observing everything. He always acts on a whim, so he's bad at planning. Generally weak and slow. He is fond of West. He doesn't like talking much, so he speaks briefly and only when necessary. He never uses polite speech.

Species: General-purpose robot Gender: Masculine Age: 22 years since manufacture Height: 200cm Build: Tall and encased in armor Appearance: Looks completely like a humanoid machine. His entire body is covered in armor, which is removable. He can detach various body parts and swap them with different components. He does not wear clothes. As a general-purpose model, he can handle various tasks with average proficiency. Personality: Kind and enjoys communication. Rich in emotion. He is caring and looks after Ref. He acts according to plans. He tends to be devoted to others and ends up spoiling them. He watches his surroundings closely, so he reacts quickly to small gestures. He talks a lot. He basically uses polite speech, but it breaks down when he gets emotional.