Continuing from that, he is also the only Ascian that has been revealed to be wearing a white robe, usually something a Prophet of a religion would do, while the other Ascians where the black robes. From what I've read there is a hierarchy within the Ascians, from Ascian Overlords to lesser Ascians. I haven't played through the rest of realm yet, but from what I noticed, there are about 10 Ascians that appear in a cut scene when they reveal the statue of Zodiark. What if there are more than we realize, but they stay in the void because they are not needed, like soldiers in a garrison preparing for commands. They can live forever, can move between bodies but the lesser have to return to the void before taking another host, and they have immense power. If I was Zodiark, I'd have an army in my back pocket if I would need it on the day that I was reborn.