Finally putting these ideas into post form
so we know how the overlord is commonly accepted to be scared shitless of zane, that being the reason he put three anti-zane villains on his council, because he killed him for a lot longer than lloyd did. But i think there might be some more to that. See, the overlord knew of the prophecy and thus the possibility of losing to lloyd. So maybe he kept a backup plan, choosing a place that would allow him to come back easier for the final battle, which is where borg tower was built which enabled his return, and maybe even keeping some of his powers in reserve for that. He was still weakened of course, but he had a backup plan. And then after his fight with lloyd, there was no more prophecy as it had already come true, so there was nothing stopping him. This is where Zane comes in. Zane was never destined to defeat the overlord. And this was already the overlord‘s backup plan, so when Zane defeated him, not only had he no way to return for a long time, he also did not expect it. That is what i believe to be one of the main reasons the overlord was so scared of zane, thank you for coming to my TED talk