He and the other white angels were responsible for destroying the world several times over, as the beings they created didn't measure up to their idea of prefection. They see humans, elves, giants, and dragons as failed creations, not worthy to be in their presence or even be alive. After Arawn and Pwyll create the barrier to keep the white angels from being able to interfere with the world anymore, it is centuries before they are able to penetrate it and send Lector down to the surface alone. He then helps create the Holy Empire, with he uses to help bring about his plan to destroy the barrier so that the white angels can reset the world again.
