The Invulnerable
Having traded his soul to the devil, little did he know about the consequences!
His sense of pain and pleasure was turned completely upside down and his body gained the ability to regenerate every night, no matter the damage taken.
In the morning his skin is smooth and clean again, all the internal organs are back to their proper places, bones no longer broken, testes nice and tight, joints properly aligned, the whole backbone in one piece, bowels free of snakes, rats and other vermin....*ahem* Long story short, everything's ready for a new day of fun XD