Tail, hey. With a title like that, surely there’s gotta be some sort of animal connection to his identity. But I’m sure I read somewhere during the last day or so that Little Mermaid won’t be early in the season, so I doubt he’s merfolk, and I’ve never bought the Monstro theory, but MANY have suggested it, making it incredibly unlikely, as they’ve hinted that it’ll be a huge reveal that no one’s guessed thus far.