This idea isn't especially original, nor does the drawing in the original post look especially realistic.
There are many examples of "realistically" drawn pokémon on the Internet, such as this one, which was found with a simple Google search:
http://annaj.deviantart.com/
As for the soundclips, I'm not sure how you would execute this based on the sounds from the games, many of which are just a series of annoying electronic sounds. You'd pretty much be making them up from scratch or simply taking sound clips of animals and putting them adjacent to pokémon similar in appearance. If you were to create your own noises, how would you go about making proper noises? While a bunch of nerds recording themselves trying to sound like dragons and rodents would have a certain humor value, that doesn't sound like what you're aiming for.
Good luck, but I personally don't see the appeal.