Things were easier for the old novelists who saw people all of a piece. Speaking generally, their heroes were good through and through, their villains wholly bad.
Sentiment: NEGATIVE
Both villains and heroes are a bit boring, really, unless they're flawed and broken somehow. If they're not flawed and broken, then clearly they need to be broken and made flawed. That's what an author does if he or she has any dignity.
A villain can be stylish, and his actions don't have to be explained. Heroes are boring in comparison, even anti-heroes, as there's always a justification for their bad actions.