Firstly, thanks for all the feedback!!!
In my story, the scientists have just caused this situation, though it is the result of many years of trying, (which is why basically Armageddon/the apocalypse is descending upon their world) the problem was that they let this force out and lost control...
So I am confused about this. I have a whole exposition and such written, and have introduced (or at least left foreshadowing threads) to most of the characters, plot lines, etc... But thus far I don't really have a villain set up, just a general threat hanging over my main character's world...