Apollo
Apollo was the son of Zeus and Leto, and had a twin sister, Artemis. In Hellenistic times, he was merged with the persona of Helios, God of the Sun. Artemis merged with Selene, the Goddess of the Moon.

He had four horses who pulled his fiery chariot across the sky. The horses were called Pyrios, Aeos, Aethon, and Phlegon.