Æthera
Although Æthera has been created eons ago, it lay dormant for ages after the first Ragnarök.
In the last millennia, deities started to return to Æthera, fleeing their own worlds that were annihilated one by one by the Dissonance. They brought with them their children, cultures, and conflicts and now Æthera has become their last sanctuary.
Even if their goals and morals do not align, the different pantheons now form an alliance of convenience to fight the Nihil Mahlstrom.