He's an actual entity in this version of the story, and he is what Hivemind wants to bring into the real world, so he can rule it like he used too, so whenever Hivemind or any of her victims talk about "serving their Lord" this is who they mean. He is not a human, or a celestial entity, he's more of a ghost if anything. The crown is only used when he is ruling an area, other wise he does not wear it. He was sealed a while ago by some character who I might reveal later. Also he's asexual. If he ever was unsealed, he surprisingly would not care for Hivemind, they have a very one sided relationship. The only thing even slightly related to creating Hivemind was creating a cloud of spores once (different spores than the one Hivemind uses) and releasing them into the air where after a couple thousand of years they would make a pile of carcasses take shape, and become Hivemind.

(IMPORTANT INFO FOR UNEDUCATED PEOPLE, HIVEMIND IS THIS AU'S VERSION OF IMPERIUM CARNIS)