Kvolemeth

Kvolemeth, was a human hero born long before the events of the campaign. He became powerful enough to ascend into legend - but then went further, adopting the new title of Yoggs'goth and getting further removed from reality as his power grew, eventually becoming a Great Old One. He was chained away, his being split between heavily guarded temples scattered across the world, so his ability to affect the world is limited. As such, he seeks to regain his power by funneling his power into warlocks like Orlando Bloom, and getting them to do what he cannot.