Metis

A second android who claims to be Aigis' "sister." Metis is a playable character in the Episode Aegis portion of Persona 3: FES, joining Aigis on the team when Aigis inherits the Main Character's Persona and powers. Metis is the manifestation of Aegis' wish to stay as a machine rather than become a real human and mourn for the Main Character. This also includes her strong feelings toward the Main Character.