10. Aries
Although an Aries can be one of the nastiest people you’re likely to encounter, they usually never see themselves that way. They will admit that they can be a little contentious when wronged, but that’s about as far as it goes. That’s a bit of an understatement since they are famous for being impatient, aggressive and stubborn, and are usually arrogant about their behavior at the same time! They also can be bit more likely than others to descend into immature behavior when they are confronted about their behavior.