My understanding is that his evil ending doesn't do anything with Mizora. I would think and evil and powerful version of Wyll would be onboard for some vengeance, and that could get pretty dark. Killing her would be personal, so it wouldn't feel as generic. The lack of closure with Mizora frustrates me. I hate her. At least Companion Wyll is trying to hunt her down in some of his endings. I'm headcanoning he succeeds.
