Helios, also known as Pegasus, is a mystical character in Bishoujo Senshi Sailor Moon, particularly prominent in the 'Sailor Moon SuperS' arc. He is the guardian priest of Elysion, a sacred land connected to Earth. Helios takes on the form of Pegasus to seek help from the Sailor Guardians, especially Chibiusa, to protect Elysion and the Golden Crystal from the Dead Moon Circus. His presence is vital to the storyline, offering guidance and magical aid.