I'm in the process of drafting a world and characters for that world, and I've run into a fairly big landmine here. There is one character. He's physically attractive. He's highly intelligent. He's a member of a pseudo-military force, but he's also an exceptional scholar, a witty orator, and one of the youngest magical folk in written history to have acquired a highly prestigious position and award. He's soft-spoken and seems wise. He's a competent but not excellent musician, and he has a lovely singing voice. The only drawback to this perfect character is that he's manipulative, he lacks basic empathy, and he's naturally predisposed to auditory hallucinations. He's absolutely inhuman inside, and he hides it fairly well, but people find out. When people find out, he tends to shut them up. He doesn't brood about this, he doesn't regret it, and if you ask him he'll either shut you up or tell you with a straight face that yes, he did all that. He doesn't care about his family, colleagues, or friends, and he isn't in the least concerned about anyone under his care, although he'll put up a decent act of it. He's working towards one goal he neither knows completely nor cares about, although he may come across as a well-intentioned extremist. And yes, he is held accountable for his crimes, and in the end quite a lot of people either dislike or despise him, and he doesn't have a happy ending. So, villain or Mary Sue?