Well, at first glance I would figure him to be male, but very feminine. But that's more the chest than anything - seeing just the face I would've probably thought he was at the very least very androgynous. Well, more so than the whole picture. You know what I mean.
All that said: Amazing work. I genuinely do not know how you do that. It must've taken more hours than I could imagine... Most definitely shows. I love how parts of the background seem to fade into a watercolor piece that seems less detailed but still totally fits. Is that thing around him - the serpent-fish thing - one of the demons?
Also: The design of the clothes. I always adore how you do those. It makes me wish I was a better art critic just so I could tell you how amazing it is in detail.