The third and final concept art for the basic enemies, finished with colour palates and everything! Ready for me to start 3D-modeling them, which I have already started on due to time constraints (I have only three weeks to create a fully functioning prototype).
Originally I thought of going with the same colours for their scales as the trees of the environment, but I ended up darkening it a bit.

But as I mentioned before:
These concept arts are uploaded mainly for feedback before I actually implement the designs.
So what do you guys think of it so far?
Any of these details or designs that you think would work very well?
Any that are just bad and needs more work on the design?
Anything else that I might want to consider?