The Underworld (in Japanese: 冥府界 Meifukai, lit. "Hades World") is a vast and dreaded netherworld that is a natural vertical maze, ultimately opening to the Overworld and a location in the Kid Icarus series. It is a dank, dark world filled with evil monsters. Of course, the twisted creatures that inhabit the Underworld only provided a sympathetic ear and allies to Medusa, who was banished here by Palutena. Staging a coup from here, Medusa started her ultimately successful invasion of Angel Land and installed herself as ruler in the Palace in the Sky. Though it was believed that Medusa was the ruler of the Underworld in the beginning, it is revealed in Kid Icarus: Uprising that Hades himself is the true ruler of this realm.