A Big Bad is a common driving force behind conflict in stories, so it makes natural sense to write one in. But villainy requires villainous acts...so a villain who doesn't really perform those is a bit hard to swallow. In fact, this may only prove a character a Jerkass, especially in regards to the protagonist. This isn't a case of a deliberately over-the-top villain, it's a personification of being an ass for its own sake. That being said, there are cases where just being a jerk can qualify one for being the antagonist by itself. Examples of Designated Villain include: