Pyotr's mother was one of Deusten de Mon's faithful, and she allowed the essence of Orcus to enter her, much to the horror and resentment of her husband. She was executed in the aftermath of the assault on Vauntil, but her good and loving husband could not let this infant, tainted as he was, to be killed for something he did not commit. He raised Pyotr in Vauntil and explained to him what he is, where his heritage comes from, and why it is so important to reject the call of his heritage.
Life in Vauntil as a tiefling is brutal. He learned to be heavily ashamed of his heritage. Pyotr has sworn to rise above it and show the world that he is a foe of Orcus and everything he stands for. The call of the Abyss occasionally causes him to lash out, and he has awakened in himself some very powerful magic, but he focuses his rage on the demons that corrupted every aspect of him, and he swears to make them pay for ever causing him to be born.
Reactionary (Combat): +2 Initiative
Repel Sin (Race): +2 save vs. spells and effects with the Evil descriptor
Unscathed (Magic): +2 to each energy resistance
Paranoid (Drawback): Aid Another for Pyotr requires a DC 15 roll