Seiya and Shun made it to the palace first but upon reaching the palace, Shun is possessed by Hades due to having a pure heart. While Seiya, Shun, Hyoga, Shiryu, Ikki and Gemini Kanon all trudged towards Hades' palace, they faced many of his Specters along the way. He tasked them with the goal of slaying Athena so he may take ownership of her soul in the Underworld, something the Specter Saints succeed in accomplishing though not without helping her awaken the Eighth Sense to enter the Underworld. Among the ranks were Aries Shion, Gemini Saga, Capricorn Shura, Aquarius Camus, Cancer Deathmask and Pisces Aphrodite. Hades initiated an invasion on Athena's Sanctuary by resurrecting the fallen Gold Saints as his Specters. Any more details regarding Hades' role in the 18th Century has yet to be seen. At some point during this conflict, Tenma managed to wound Hades forever cementing his hatred of the Pegasus Saints. Knowing full well that he is the childhood friend of Tenma (Seiya's past incarnation), he and Pandora initiated another Holy War against the Sanctuary. Hades takes possession of the purest human alive, Alone. Worrying for the state of his appearance, as well as his life, caused Hades was thrown in a state of trauma, deciding to forever retreated within Elysion until the world had been conquered by his subordinates. It was during the age of myth that Hades fought the then current Pegasus Saint who had mortally wounded the god. It was during this time that he recruited the Primordial Gods Thanatos and Hypnos as his personal generals.

While Zeus ruled over the sky and heavens, Poseidon controlled the seas and Athena became guardian deity of Earth, Hades was entrusted with ruling over the land of the dead consisting of both Tartarus, where sinners are sent to suffer, and Elysion, home of the virtuous and honest. Unlike his other siblings: Zeus, Poseidon, Hera, Demeter and Hestia, Hades is not an Olympian God but instead rules over existence itself alongside his brothers and the goddess Athena. As with Greek mythology, Hades is one of six children born from the union of the titans, Rhea and Cronus.

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