A Nyarlotephian, who has come to Earth on a mission to protect Mahiro. Nyarlko (pronounced Nyaruko) has a bright personality, as she is always shown to be happy and rarely down. She likes anime, manga, games, and superhero shows. She has perverted thoughts that always revolve around Mahiro, whom she loves deeply. She also claims it was love at first sight. She is brutal when fighting, but nonetheless keeps her bright personality.