Metis is an exclusive character in the playable epilogue of Persona 3 FES, titled The Answer. Metis has a childlike personality, to the point of being compared to a child by Junpei, something she takes offense to. She recognizes Aigis as her "sister," and as a result tries to protect her from harm. She cares for Aigis deeply and is willing to do anything to protect her, even if it means she'll hate her for it.
Persona 3
Persona 3 is the fourth game in the Persona series. The game was developed by Atlus for the PlayStation 2. Persona 3 follows a group of high school students trying to cope with, understand and accept death in a world surrounded by it, as well as find their own reasons for living. They form a group called SEES in order to investigate the Dark Hour, a mysterious time period between one day and the next that few people are aware of. During the Dark Hour, SEES explores Tartarus, a large tower containing Shadows, creatures that feed on the minds of humans. To fight the Shadows, each member of SEES is able to summon a Persona, a manifestation of their inner self.
