Since Halloween is coming up, and the boards seem lully, I'm asking:
What is the creepiest PC/NPC you've ever run/seen run?
Here's my top 4:
NPC I ran - A pair of conjoined dwarf twins, a cleric of Nerull and a mage. The cleric had special plate armor with a large hole in the back through which his brother's torso stuck. Eventually the player snuck into the temple, found them sleeping, and slit the mage's throat. A few days later when she broke in again, the Cleric flew into a rage, attacking her berzerkly while the corpse of his dead twin brother flopped about on his back.
PC I designed but wasn't allowed to play on the grounds that he gave the DM nightmares - a drug addicted canabalistic morge doctor turned vampire who drank blood by killing victims, carefully pulverizing their large bones into splinters with a lead pipe, then swallowing the bodies whole (he had the hinged snake-like jaw power and the "giant" and "monstrous" traits, making him tip the scales at something like 700 lbs.), later disgorging their splintered, blood-slicked skeletons.
PC I designed but wasn't allowed to play (as above) - a little girl vampire that carried a gold-fish bowl with a dead goldfish floating belly-up with her at all times. Think standard "creepy little girl in a fancy dress". She had the illusion powers, so she could project the following to those nearby:
A corpse-like appearance
The tips of her fingers dipped in the water in the bowl and stripped of flesh as the dead fish nibbled at them
The fish suddenly growing huge and stretching out of the bowl to bite limbs off of people nearby
City of Villians character, looked like a young girl carrying a knife. This was her chatacter Bio:
The young girl cradles a huge rusty cheese knife to her chest as she answers your questions.
?Who?.Who am I? I?m just Emily? No one important.?
?What am I doing here? ? You just hush Daddy. They?re not trying to hurt me. They?re nice people? I?m not doing anything. Just trying to find a cardboard box to sleep in.?
?Where are my parents? I don?t know where Mommy is and the bad men in the uniforms hurt Daddy when he tried to stop them from taking me away from him. Now he?s here inside me ? just like he always wanted. ?Yes Daddy. I know you don?t like me talking about the bad men in the uniforms. No Daddy. I?m sorry Daddy? Yes Daddy. I?m sure they know that you love me very much. No Daddy. I?m sure they?re not trying to take me away from you again Daddy. The knife Daddy? I don?t want to Daddy! They?re nice people Daddy!...?

? Yes Daddy. Whatever you say Daddy.?