Thread:Joshuamccray 2.0/@comment-33119148-20181226185134/@comment-34055410-20181226190534

As for the personality part, all you have to do is give the villain a clear motive. Why do they do what they do? Is it for money? For revenge? For power? Or simply out of sadism?

As for the moral agency part, simply write the villain as a human who is committing crimes out of their own free will. If the villain is a monster or demon, you should state in the story that he has a moral agency.

And a Moral Event Horizon is a crime so horrible the readers stop feeling any sympathy for the villain. Example: Grand Moff Tarkin crossed the Moral Event Horizon by destroying Alderaan. Usually, a villain needs to cross the Moral Event Horizon more that once to qualify as Pure Evil, but if the said action is heinous enough both in-universe and in general, and the villain meets all other criteria, the villain can qualify albeit crossing the MEH only once.