Lorkhan

Lorkhan, is the Soul most directly responsible for the existence of the universe.

History
Lorkhan was the spirit created by Sithis to lead an army andfdd destroy the universe. But to start Lorkhan had to gain a following. He ended the war for years to create a soul for the unknown realm. Working alongside Auri-El, Lorkhan began to plan his great spirit but halfway through the project Auri-El dicovered that Lorkhan was still working under Sithis. Determined not to start another war Auri-El Created the Theia Disaster.

Et'Ada
After the creation of Mundus, the two created twenty-two souls called the Et'Ada. The Et'Ada were the workers that built Mundus from the ground up. But shortly after the creation of Mundus Lorkhan poisoned the minds of sixteen of them. They left and created a new reality called Oblivion, Lorkhan wanted to lead his sixteen Et'Ada in Oblivion where they could create experiments. After many years Lorkhan led his army back to Mundus and took over the realm, with his eyes settled on Sol he created monstrosities on the third planet out from the sun. Angry at Lorkhan, Auri-El created Thiea in order to destroy Mundus.

Theia
Auri-El fired Theia directly at the planet Lorkhan was on but it was slightly off target, It smashed into the planet and merged with it to create Earth, in ancient mythology it is believed that Lorkhan was hit directely and turned into the moon but this isn't true, in reality it only weakened him allowing Auri-El to return. Lorkhan's sixteen Et'Ada left Lorkhan in order to rule over their own plains of Oblivion, Auri-El asked them if they wanted to help guard Mundus from Sithis if he ever returned but they refused and formed a new group of beings called the Daedra.