Creating Unsympathetic Characters

Creating unsympathetic characters are much easier than creating sympathetic ones.  The key is to give great things to people who really don't deserve them, and make the people who have them think that they really do.  Giving them two loving parents, and making them spoiled or a jerk is a good start.  Dudley Dursley is a great example of this.  If his mother was dead, no one would think the pig tail incident was funny, but because she's alive, it becomes comedic.

You can also make them rich, a businessman, a car salesman, or all three.  Dialogue is very important when creating unsympathetic characters.  If you end every one of their sentences with 'hon' and don't make them twisted in some way it won't work as well as if you end every one of their sentences with 'four eyes.'

If this way does not work for your story, like if you happen to be writing about the world where everyone's mother is dead, and most people are mimes, then the easiest way to make a character unsympathetic in this scenario is to have them kick a cat.  This doesn't go along with the giving them things they don't deserve angle, but it's still highly effective.

How do you make your character's unsympathetic?