Mah Votes
1) Cartoons!
2) Regi DS
3) CyzirVisheen
Cartoons! fits the role and description well, and looks as if it could be as benevolent as it could be fearsome. To me, it is perfect,
Regi DS looks the same, but it looks just a little too much like the other dragons in the games to be my favorite
CyzirVisheen's is original, very well done, and fits almost everyhting but I have a hard time thinking about how it would move. I mean, I can't imagine it being very fast at all, mostly because of it's sort of poofy in the center. This really can't be avoided though, so I give it 3rd.
It was really tough for me to choose, but I think Cartoons! fits the role the best, which is ultimately the most important thing about the art IMO.
As for all the others, I really prefer that pokemon actually look like pokemon, not Digimon/Magic The Gathering Stuff/ ect..., and a lot of them just didn't look that way to me. Others would have worked, but they were missing that true electric "look", and looked more like pure dragons or rock/dark/water/psychic dragons, and yet others had too many things on them, i.e. lightning bolts in so many places that it looked awkward, plus/minus signs everywhere, ect...
I would also give honorable mention to pkmn-taicho. He would have been first, but when I saw how much he changed it from the original, it had become less attractive to me.