Quote Originally Posted by Carin-Eri View Post
Although it wasn't formally established, it was heavily implied that the original Golbez (who 'died' a long time ago) was a Azem shard too. He's currently sealed in Memoria but I guess it's not completely impossible that he could be written out of that situation.
It was not implied, this was collectively decided with absolutely no real evidence because the community went 'yeah it'd be cool'. The actual highest-likelihood candidate for the Azem shard of the Thirteenth is our Reaper Avatar.