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Anti-Shadow Suppression Weapon - Codenamed Aigis. || "It will be okay. I am right by your side, here to protect you forevermore." || Persona 3 + Crossovers || Spoilers Ahead
About me: Aigis is an Anti-Shadow Suppression Weapon and a member of S.E.E.S. who also attends Gekkoukan High School. She is a machine that gradually awakens to human emotions.
Aigis' initial personality is simply a robot designed to obey orders, although she is drawn to the protagonist and states that it is very important for her to be by his side, going so far as to hug them in front of everyone. Her desire to protect the protagonist is so strong, in fact, that she was able to overcome Ikutsuki's programming and free the entire team from their shackles, when Ikutsuki had attempted to sacrifice them to bring forth the Fall. As a result of having no emotions, Aigis' social skills are more-or-less non-existent; it's frequently noted on-screen that while she may look human, she is far from passing as such.
She is prone to doing very strange and socially unacceptable things, such as breaking into the protagonist's room to wake him up and requesting to be on standby in their room, which Yukari calls her out for. A video recording shows that she has a habit of breaking into his dorm room at night in order to check on him, even going so far as to keep a record of how long it takes her to pick the lock, In Falling Down, she even goes so far as to sneak into the boys' rooms during the group's stay in Kyoto, claiming it was unfair that she and the protagonist weren't in the same room. Lack of social grace notwithstanding, Aigis is nonetheless very polite to everybody, always using the honorific '-san' when addressing them. In the original Japanese version, she often ends her sentences with "de arimasu" prior to developing emotions.