The Helheim Forest is a semi-alive place, having devoured entire worlds in its expansion, with its more recently discovered victim located in a valley. It is controlled by the Over Lord Inves, who control the plants and the very environment of Helheim itself. However, DJ Sagara is the very spirit of Helheim itself, making him the true ruler of the forest. In the penultimate episode, the Forest was moved to a planet near the edge of the universe to prevent Helheim from snuffing out life on Earth. It turns out that Helheim was actually on another planet, the Femushinmu Planet.