Helios

エリオス

Pegasus is a white winged unicorn, and Helios serves as the priest of Elysion. Although Pegasus and Helios are distinct characters in the manga, they are merged into one in the anime. In the manga version, Nehelenia curses Helios, trapping him in the body of his favorite horse. Consequently, Helios is compelled to appear to Chibiusa in this form. However, when he bids farewell to Chibiusa, he is depicted riding Pegasus, separate from the horse's body. Unlike his anime counterpart, the manga Helios possesses no definitive powers. He cannot lend power to others for attacks, nor can he physically change his form. His abilities are limited to transporting himself between worlds and fighting the curse placed upon him. While he guards Elysion, he does not directly guard the Golden Crystal. He is aware of its existence, but it is not located in Pegasus's horn; rather, it is a part of Mamoru that only Mamoru can wield.
In the anime, Helios plays a major role in the fourth series of Sailor Moon, Supers. After being captured by Nehellenia, he becomes Pegasus in order to search for a pure dream in which to live, eventually taking residence within Chibiusa's beautiful dreams. He willingly assumes the form of Pegasus, leaving his physical body behind. Pegasus becomes a friend and companion to Chibiusa. He initially keeps some secrets from her, but as the series progresses, their bond deepens beyond friendship, culminating in a kiss and a hug in the anime. He protects the Golden Crystal, which is located on his forehead; this crystal is eventually used by Sailor Chibi Moon rather than Mamoru at the end of the arc. Once summoned by Super Sailor Chibi Moon, Pegasus lends his power to Super Sailor Moon for use in attacking Lemures.
In the manga, it is strongly implied that Helios will eventually marry Chibiusa and become her "prince."