The world Beneath: Concept art 3

This is for my pitch bible idea.  

Story consept: 
There is a world under your feet´s. A world as old as the earth itself, with creatures evolved very differently than those on the surface; do you think that humans are the only intelligent life form on earth? What if I told you that all the fairy tales are real and the live beneath us. Welcome to the World beneath!   

There is a war going on, there are many different razes fighting each other over how they think the future of earth should go, even entities from the same raze aren't one the same side. There is a big organization that do DNA manipulation to make hybrids, to make them self stronger and to make biological weapons to make the other side weak.