Originally Posted by
Cleretic
The Avatar being their Reaper's shard is a theory described as 'both unverified and unverifiable'. To me, that reads as the writers saying 'we're never going to answer this, here's the biggest hint for people who are looking for that, but decide on your own favorite reading'.
And I think that works because it just does not matter. We have a lot of potential contenders for the Thirteenth's Azem shard: The Avatar, the CoD of Darkness, Golbez, Zero, Diabolos, Other Golbez, Cagnazzo, that one Hecteye; pretty much every single named voidsent is a possible answer... and any confirmation would change or deepen exactly none of them. What's the value in even answering the question at that point?