Name: Helios (Pronounced without the "h" sound, like "Elios")
Animal: His animal form is a Pegasus
Animal Appearance: White, with blue highlights, and a gold horn
Human Appearance: He has white hair with blue highlights, and redish-orange eyes. He has a red tear-drop shaped jewel on his forehead, and wears two gold hoped earrings w/ diamonds. His outfit is a white long-sleeved robe w/ green trim over white pants and boots. He has on a double necklace with a gold pendant.
Age: although at least 1,000 years old, the Materials collection artbook says he has the appearance of a seventh grader.
Guardian of: Mamoru (Darien), and Elysion
Lives: Helios lives in the center of the Earth, in a place called Elysion (pronounced like "illusion"). There he prays for the people of Earth, and their beautiful dreams.
Dream: To protect all the beautiful dreams of the people on Earth.
History: Helios is the guardian Priest of the Earth. He protects the Earth, Mamoru, and the Golden Crystal, and has done so since the Silver Millennium.
The evil Nehelenia was determined to rule the Earth, and the Moon Kingdom. She found out that if she could get a hold of the Golden Crystal that was guarded by Helios she could rule the Universe. She traveled to Elysion and offered Helios a place at her throne if he gave her the Golden Crystal. Helios told her that if she had a beautiful dream the crystal was hers, if not she would be punished. When she reached out to get the Golden Crystal it burst in to flames. Nehelenia was later sealed into a mirror by Queen Serenity.
When Nehelenia awoke from her sleep over a 1,000 years later she vowed revenge against Helios and the people of the White Moon. She sent her followers to Earth and had them poison it with evil. It quickly affected Helios, and escaped in spirit to Chibi-Usa's (Rini's) dreams, while is body now in the form of Pegasus was held by Nehelenia's followers. Chibi-Usa's beautiful dream had provided the light that allowed his spirit to escape Nehelenia's grasp. He then when on in search of the maiden who had the power to use the Golden Crystal
Other: Helios is seen in the SuperS series of both the Manga and Anime. He appears in two forms, as a human named Helios, and an animal named Pegasus. The horn on his head holds the power of the Golden Crystal, and is caused by the magic spell that was cast on him.