Demon from my Scary dream

(too lazy to re-write this part of my dream..COPYPASTE)
We drove to this city (the dream kind of changed here) where the sky was pitch black, and this huge freaking round castle was sitting on the top of this dead black mountain. It was super scary. I was in some sort of movie production team, and we were making a film in the castle. I remember looking at the castle, and seeing this horrific looking black dragon/demon thing, with humany eyes and gothic looking wings...it was like, the scariest winged thing I have ever seen, and in my dream I think I was like, actually afraid of it (which never happens) I wish I could draw it in all it's detail, but it was too crazy and I doubt I could ever get that face and body right. He was as big as the castle, and he sat on top of it and let out this huge, haunting roar and I wanted to pee my pants and run. He spread his wings and lumbered back into the dark tower in the castle, where I could imagine he would barely fit, and for who knows why, I went into the castle to film my stupid movie.

We had cool looking anamitronics of some weird looking beasties, and we were filming in this hallway along a track. The setting was in the tourists lobby, which was really just a hallway that circled the entire circumference of the castle. It sold shirts and stuffed toys of the movie production. It was a friendly seeming place, the windows (huge windows) were set at least 60 feet above the cold stone floor, but the company making the film had tried to give the black stone walls a more friendly appearance by putting wood paneling. That failed, because this black slimy sticky goo just penetrated and spread all over it.

I was minding my own business trying to film the puppet for the hallway scene, when I heard this awful thundering noise and what sounded like a lot of things being thrown around, like metal poles hitting the walls or falling to the floor. I turned around and put the puppet down, which started to melt in my hand, turning from light brown, to dark brown to black, like tar. I was scared. Haha. The sounds only got louder, echoing with a crash as it neared, and people were running from the left hand hallway/corner...(what do you call a round corner? haha) and all of a sudden this big, shiny, black looking creature came running from the floor, and was moving with such speed and aggression that it had to run up along the wall about 40 feet up to properly harness it's mass at that velocity. Otherwise it woulda lost traction and skid into the cafeteria/food court that went off from the hallway. Some of the filming team thought it was an unannounced robot the company had made, but we quickly figured out it wasn't part of the film. These people wearing red and white clothes with special metal armors were running as quickly as the demon thing, and they kept beating it down until it fell to the floor, scampering like a bug until they finally pinned it.
It had six legs, a huge bulging quickly searching eye, and weird spider like mouth bits that kept wiggling around it's mouth. It was on the floor about 34 feet away from me, and the people kept yelling at us to run but I couldn't, the thing was staring at me, and as quick as I was thinking about running the demons arms stretched out like they were made out of gum, and whipped out with a clawed hand only to grab my leg. It HUUURRRT. It was like a huge vice getting tightened around my leg, and it burned REAAALLY bad. It was trying to pull me while it's other legs did the same freaky stretching thing, trying to swat away the human fighter peoples who were trying to kill it. Some dude with weird spiked hair cut it's arm off, and it screeeeched super loud and writhed around a bit. I looked down at my leg and the arm started to melt off. Eventually it got back on it;s feet and charged off, making a huge mess of our filming equipment. I was freaked out, and two of the fighter people came and told me that this castle was some kind of lock, and that the demons (they said there were about 450 of them) had been released on our world, and that the virus/zombie thing that had happened earlier was just a sign that they had been set free, somehow. They said they were part of a guard that had been set up near the castle in the event that they were set free, but that was all the details they gave me.