There in front of me was a giant snake, now when I say giant I don't mean like your friend's mom that is too big to go down the stairs without a spell to carry her. I mean giant as in will eat the house and your friend's mom along with it.  This fearsome reptile is at least as large as the library.  Its eyes where a fierier yellow and orange, it had to long horns that came from the top of his head like a bulls. Its underbelly was this bloodshot red like it just slithered over a pile of bodies. The scales that covered its body where the same fierier color his eyes are. So the short version is he looks like a huge bucking snake that just slithered his way out of Tartarus.