Devil on Your Shoulder
From NsdWiki
Expoint Bonus: 2
You are more aware of your darker impulses than most. It's not that you can't be good — you know all about good and evil — but your evil side is way cooler. You take a −2 penalty to Virtue checks to resist temptation, and the GM should tempt you frequently. See the Angel on Your Shoulder entry about racial and cultural morals.
Devil On Your Shoulder combined with Avaricious and Sadist makes for a real bastard of a character. When paired with Angel on Your Shoulder, this Fault makes characters act conflicted.