Metis has short black hair and bright red eyes. She has a robot-like humanoid body that is colored black. Her face is strikingly close to a normal human's face, with pale skin. She only wears a red and black armored skirt, and a red armor headpiece. Her personality is childish, entitled, dramatic, insecure and also quite intelligent. She has no memory of who she is, only that Aigis is her sister and that she has to protect her. She is overprotective of Aigis, and hostile towards threats.