Gregoriah is a humanoid creature with primarily black skin. He has one sharp, upright horn on the right side of his head, with two bands - one cyan and one orange - wrapping around it. The same pattern can be found above his hands, which resemble paws. He can be depicted with some tufts of black hair on the right side of his head. He has paw pads on the undersides of his hands.
He has big, heavily lidded eyes with yellow sclera and pupils and orange irises. He has blue fangs, blue round eyebrows