Mundus Devil is the primary antagonist in the Devil May Cry series, particularly in the first game. As the ruler of the Demon World, Mundus is a powerful and malevolent being who seeks to conquer the Human World. He is responsible for the death of Dante's mother and the corruption of his brother, Vergil. Mundus commands legions of demons and poses a significant threat to the protagonist, Dante, serving as his ultimate adversary and a representation of overwhelming demonic power.