Melena

Melena (メレナ, Merena) is the central antagonist for the First Term of Fairy Tail: Dust, and later a minor antagonist for the next several terms. Her exact goals and loyalties are unknown, but it is known that she originally enrolled at Shion Academy in order to retrieve the magic tool Dust, a central device for the series. While posing as a bit of insecure but kind girl, Melena is in fact a sadistic serial killer who will do anything to achieve her goals. She also seems to have developed a strange obsession with Knave Dhahaka, though her exact plans for him have not yet been explained.