Sorry it has taken me so very long to get back to the forum. It's been an eventful year (mostly for the good).
Re: water spout kin, I think it would depend on how you mean that actually. The origins of gargoyles are from the area of Rouen, France, circa AD 631-641. A creature called the Garouille or Goji was said to have terrorized the area and been killed by St. Romanus, former chancellor to Clotaire II. Like a dragon, it was said to have had a long neck, bat-like wings, and the ability to breathe fire. After it was killed, the Church attempted to burn it's entire body, but head and neck would not burn. So, they attached these to the front of the actual church face to ward off evil spirits. So in that sense, I would say...I identify as gargoyle.
As for the representations of gargoyles in movies, most of the ones I've seen have appeared more like demons. There is another post on the forum about the difference between demons (daimons, daemons) and djinn, so I won't go on and on about that topic. I can see physical similarities, but not personality or purpose-wise. Demons, to me, are more chaotic or set out to do ill-will, while djinn have choice, free-will, and act more like messengers (without being as high-ranking as say angels).