Board Thread:Lore Discussion/@comment-208.108.122.236-20140206162917/@comment-9062114-20140207010332

Tiber Septim was a Shezarrine in his life time. Meaning that he was an incarnation of Lorkhan in the form of a mortal. So he was basically an Aedra the whole time, and since Lorkhan played a huge part in the creation of Mundus, Talos did indeed play a part in it's creation.

What's interesting is that Talos didn't just become a god, he was a god before, as Lorkhan. So basically Lorkhan has reached divinity again through the form of Tiber Septim. Which is why the Thalmor want his worship to be gone, since according to Aldmeri Religion, Lorkhan was the Aedra responsible for binding them to the mortal plane.