Straight: Dr. Villainous Evil styles himself as a Genre Savvy character who knows he's a villain, refers to himself whenever the subject comes up, and often responds to someone's criticisms of his moral character with a hearty Insult Backfire rejoinder.
Dr. Villainous Evil appears to be basing his every action on what would be the most villainous thing to do.
Dr. Villainous Evil is doomed to a 0% Approval Rating because he never pretends to be anything but evil.
The reason Dr. Villainous Evil chose that name is that he's actually disgusted by the moral absolutism of the "heroes". Ultimately, he ends up saving the world since he's a Noble Demon, but since he presented himself as the ultimate bad guy, no one realizes this until long after his lonely and celebrated death, having been bound by his own ideological image.
Dr Villainous Evil is proud of his own evil, but is smart/clever/cunning enough to put up a facade to fool people into getting what he wants. Any kind of noble or reasonable words he says to fool or gain support are flat-out lies.