Certain villains are all too human. They are flawed and empathetic. They are beings we can recognize ourselves in and grow from. Other villains are just monsters — vampires, aliens, werewolves and countless strange creatures that spring from the creative mind. There’s little to empathize with; little for the audience to connect to. So why are these monstrous villains still so popular? Perhaps because we’ve been conditioned to enjoy them — not unlike Pavlov’s Dog.