Psychopath

 is a quirk Wasteland 2: Director's Cut.

Description
When you were three, you pulled the heads off your dolls. When you were five, you burned ants with your magnifying glass. When you were twelve, you set Tommy's hair on fire. Watching others suffer is your only source of amusement, and now your mercilessness has led you to sign up for the Rangers. Justice? For you it's all about fun. Your violent tendencies mean that you need to hurt things, and frequently. When you're on that murderous high, you attack more frequently. However, your brooding nature means you're less effective when you aren't psychotic.