Once he walks the earth, the footprints he leaves are covered in oil residue's that stain for decades. He has a black staff with a silver jackal head. He has Scarlett cufflinks made out of virgin's souls , and those are hard to get. He eats endless candy bars that he has stolen from children on Halloween, he steals enough to last a whole year.
He can be toxic oil. Like a oil sheen in the air vaporized from the polluted rain to stain your nasal passage. Or he can be a healthy saint like olive oil and fish oil rich mineral drinks from the local shaman blue bar.