Given that we're now rewriting all the Many Worlds lore, we need to make some changes to the Supremacy Wars lore. Here's my thoughts. 1. What were the Supremacy Wars? The Supremacy Wars were a series of devastating conflicts which involved numerous advanced forces with no clear origin violently attacking the IC 1101 galaxy without warning, usually headed by a familiar face of some sort. Solaria, Ætherium, GDE and the old Cynopharon Empire were all involved in pushing them back. Despite being plural it was really only one war, with the different "wars" really being phases in which a given individual or group of individuals was the main driver of the fighting. 2. Who started the Supremacy Wars? The First Supremacy War was perpetrated by mysterious dopplegangers of Draga and Chen, known as the "Supremacy Counterparts". Their nature is unknown in canon, but in truth, both of them were actually Wye that took upon the likeness of Draga and Chen. The Second Supremacy War was perpetrated by Doomsday, who survived despite being thought dead at the hands of Draga. After his defeat, he was thrown into the Unobservable Universe to contain him. The Third Supremacy War, the final one, was the Purge, or more accurately, it ended in the Purge. Perpetrated by Saturn, who suddenly awoke and began destroying stuff. That's all really... It is clear, however, that it was all staged, orchestrated. The identity of who is not generally known, but in truth, Æternus, the Wye Collective and Thäldhiem Vólstien all had a hand in it, each for different reasons. 3. Solaria Solaria has a presence in IC 1101 but is not from there. Rather, they are from a galaxy group known as "Colliding Stars", also known as the Calisto Group. Their emperor, Chen, played a significant role in defending IC 1101 from the Supremacy Wars, however the nation of Solaria is also rather problematic, and the alliance between them and the other three nations is shaky and uneasy. It is mostly out of necessity that the alliance holds, as without it Solaria would likely aggressively expansionist within IC 1101 and probably end up causing a devastating war. Come the Third Supremacy War, following the vanishing of Noxus and the fall of the Cynopharon Empire to the opportunistic Wye Collective, Chen fakes his death in a fight with Saturn and retreats back to the Calisto Group. The Wye Collective, who helped orchestrate the Supremacy Wars, also used them as a way to slowly push Solaria into a position that they would want to ally with the newly Wye-controlled Cynopharon Empire, and sure enough, this came to fruition...
