who are you! A Vermin Lord covered in high tier armer looks down appon you, he has four arms, and a long tail, he is carrying a large axe, cocytus is the guardian of the fifth floor of Great Tomb of Nazarick, he is also know as Ruler of the Frozen Rivers You managed to reach the Fifth floor of nazarick, does lord Ainz Ooal Gown know about you?