The answer to that is as convoluted as you could want. Which any writer loves of course. Keeps us “mysterious” and other foolishness. So…the series has several main antagonist as it spreads its wings. The main one would be Dael ap Owain, of whose legacy this is. His spirit arcs over the whole. And for me at least, he’s my fantasy self built from people I’ve known, respected, loved, not liked very much (to include moi at times), really, a great blending of characters. Some real and others from places I’ve traveled to…Middle Earth, Dune, Malazan.