Well, he is not a normal candy person by any means. I mean, lets see, he is friends with Death, knows how to go into the underworld, and hisses at a lich possesed Princess Bubblegum. Hisses. Sprouts fangs and everything. I would say he is a vampire, but then he would bubble up in the sun. No, he is something worse.Doesn't matter. Guy's still weird for wanting someone's skin. Plus, he knew the grim reaper. I think Peppermint is just a demon in disguise.