Kind of Person: Jerk Edition

This worked well the first time we tried it, so let's go back to the well. The idea is to come up with descriptions of the form "S/he is the kind of person who..." that capture an archetype. Last time we tried the perfect people, this time let's go in the opposite direction and describe those erasable characters who you just have to hate, the real nasty jerks who revel in kicking you when you're down.

"He was the kind of person who grew a beard, knocked out his teeth, and gave himself a scar just to make sure no one would ever have the pleasure of defiling a photo of him."

"She was the kind of person who if ever you needed a hand, she'd always give you the back of it."

"He was the kind of person who would not only use a magnifying glass to set ants on fire, he would bring his own sunlamp in case it was cloudy."

Yours?