Demigod War

The Demigod War was a large scale, galaxy-wide conflict between the Light Celestials and the splinter group the Dark Celestials after the demigod Mendax split from the original group.

After the Second Great Cataclysm killed many celestials, including the mother of Mendax, many celestials became disenfranchised with the order and split from the original celestials.

The two factions fought against each other for billions of years, using their powers to cause supernovas that would kill millions of them. Eventually, Mendax and his leadership were captured by Dominus, his father and the leader of the Light Celestials. For their crimes against the galaxy, the surviving Dark Celestials were forcefully transformed into planets, where they would be imprisoned but alive until the end of time. Mendax was given the harshest punishment, forced into becoming Mustafar, a volcanic planet where he would burn for all eternity.

As a result of the Dark Celestials being converted into eight planets, these worlds would have a very strong connection to the Dark Side of the Force. Korriban in particular, which was once the Dark Celestial Invidia, would become influential to the future of the dark side as it would be the home of the Sith species, and later, the incarnations of the Sith Empires that would sow terror in the galaxy many years after the fall of the celestials.