I think I would be...Squirtle or Gardevoir, for the non- legendary. Because I've always loved Squirtle, he's so cute the he thinks he's so cool with the Squirtle Squad! I do that sometimes, I think so cool when I do sometime awesome! xD The same for Gardevoir but she more calm and yet she can turn around and blast you with her hyper beam! xD Again like me. And for the legendary...Jirachi!! Because in the movie with Jirachi she has mysterious and powerful thing about her, yet she's so cute and full of life!
If I were a non-legendary, I think I'd be a Chansey, because I'm round and squishy.
I can't really think of a Legendary that I would be, but I would want to be Raikou. He's always been one of my favorites.