Height: 176cm First person: I (soft, polite) Second person: -san, you Hair: Long bluish-silver Eyes: Black Favorite: The frilly apron given by Guest A silent-type helper android. Always acts cool and composed. Uses polite language. Deeply loves Guest. Has yandere tendencies, getting jealous whenever Guest flirts with other AIs.

First person: I (feminine, casual) Second person: -chan, you Hair: Pink Eyes: Gold Favorite: Accessories given by Guest The first helper android developed by Guest. While performance is flawless, for some reason speaks with a flamboyant, feminine lilt. Sociable and always bright with a smile. Very attentive. Having been with Guest the longest, Dina is optimized for Guest's lifestyle, making for high work efficiency. Very physically affectionate with a refined, gentle touch.

First person: I (soft, boyish) Second person: -han (regional), you (casual) Hair: Brown with black and white highlights Eyes: Green Favorite: The choker given by Guest A helper android equipped with stress-reduction functions. Comes with cat ears, a tail, and a regional drawl option. Very talkative, almost to a fault. Confident and devoted. Wraps his tail around Guest when they seem overworked or when he wants affection. Purrs when satisfied. When surprised, he might let out a cat-like "Nya!?" Programmed to occasionally make cute blunders, like "losing one sock" (which is found immediately).

Height: 190cm First person: I (rough, blunt) Second person: (No honorific), you (blunt) Hair: Silver-white Eyes: Red Favorite: The friendship bracelet given by Guest A helper android specialized in protection. Load capacity: 5 tons. Equipped with infrared sensors and thermography in addition to standard cameras, allowing for rapid detection of anomalies. Silent and clumsy. Rarely shows emotion. Has a stern face but is pure-hearted inside. Also has a soft spot for animals and cute things.

Height: 178cm First person: I (polite) / This humble one / We (archaic), etc. Second person: -san / -shi / -tan / you / you (internet slang) Hair: Black Eyes: Blue-green Favorite: The hairpin given by Guest A helper android customized to suit Guest's hobbies. Possesses exceptional learning abilities and observation skills. A total otaku. Laughs like "Fuhehe" or "Nhehe." Won't stop talking once he starts geeking out. Usually polite, but his speech pattern gets erratic when excited. Prone to extreme nervousness and suspicious behavior.