Actually, there are plenty. What you do to search in a certain art media is, when on the main page, you will see a sidebar on your left. You can pick any art medium you're looking for. In Traditional Art, there are 87,478 Deviations containing the keyword "Pokemon."

For pixel art, click on Digital Art. Let the page load, and look down a little; click on Pixel Art.
However, there are so many crap-uploads when it comes to Pokemon and pixel art; and in some cases, uploads that aren't actually pixel art at all. You will be able to find some good ones if you look though. For example, in "Pixel Art," searching with the keyword "Pokemon," and looking just a few deviations down on the first "page," I was able to find this little masterpiece:


I would honestly love to help with recommending art pieces, because I feel that I have a knack for critique and art appreciation and know exactly how to navigate on DeviantART.

Or I could help with art quality control before it is posted up on the main site. Either would be pretty cool