Helios is a priest from the world of Elysion. He is also the guardian of all the dreamers of the Human world. When his spirit is separated from his body, he becomes the mythological creature known as Pegasus. After the Dead Moon Circus attacked his dream world, Helios (Pegasus) fled and took refuge in the beautiful dreams of Chibiusa. Unbeknownst to her that she was the holder of the Golden Mirror. Once Chibi Moon's mirror was extracted by the Dead Moon Circus, Helios returned to his body and had his horn (Golden Crystal) taken by Queen Nehellenia. In the end, the Golden Crystal was returned and Helios went back to Elysion to watch over the dreams of Earth.