According to one myth, the version used in Saint Seiya, Pegasus was born when the hero Perseus decapitated the monster gorgon Medusa. Pegasus came from the blood of the gorgon, a winged horse. He eventually soared to the Heavens, and became a constellation.
More than one Bronze Pegasus Saint has dared to attack other gods for Athena in the course of a Holy War. At least two of the Bronze Saints of the Pegasus constellation have fought against Hades. The first was Tenma, whose friend Alone had become Hades. The second was Seiya, who’s friend Shun had become Hades, but he was forced to leave that body, and return to his original. It is unclear as to how long Hades and the Pegasus Saints have fought, but with Hades’ death, the cycle appears to be broken; Pegasus Kouga of Saint Seiya: Omega has not fought Hades, and likely never will. That said, he came to be known as the God-Slayer due to his defeating and killing of Mars and Abzu.
The Pegasus Bronze Cloth was originally kept in Sanctuary, which is located in Greece. A tournament was held to decide who would wield the Cloth, which came down to Greece’s Cassios and Japan’s Seiya. Seiya proved himself to be the true Pegasus Saint when he defeated Cassios. Seiya would prove to be a gifted Saint, being involved in many fights, most of them to the death. His hotblooded nature proved to be too much for the original Pegasus Bronze Cloth, so it had to be repaired several times throughout the series, as he went from fighting Bronze Saints to Black Saints, Silver Saints, Gold Saints, Mariners, and even Specters. The Pegasus Cloth went from simple Bronze Cloth to the Cloth of Athena’s greatest Saint.