Queen Metallia

Manga:The Dark Kingdom is ruled by two Queens: Metallia and Beryl. A long time ago, Queen Metallia came from a deep and dark place on the sun. Queen Metallia is an entity and she is not fully awakened, which is why Beryl is there. For Queen Metallia to get her full powers she has to be fed with human energy. As her power grows, more sark spots appear on the sun. Metallia's goal is to engulf the entire earth with her dark energy. Eventually she is destroyed by the Ginzuishou.
Anime: In the English Dub, Metallia is simply known as the "Negaverse" or "Negaforce." Because of this, Metallia is never really given to chracter. However, in the original japanese, Metallia is known as Beryl's Queen. However, how Metallia was discovered is never given to light in the anime. Because Metallia has not awakened fully, she needs the energy from the people of earth. Hence the reason why Beryl dispatches her four generals to collect human energy.