This is a special type of Pokemon over at http://pkmnation.deviantart.com known as a rarity! Basically they're specially designed Pokemon variants for events and awards and such! I bought this gal, Surprise, off another user who won her!

Art (c) galacticpink
Original Design by http://MasamuneRevolution.deviantart.com & http://Ardent.deviantart.com
PKMNation (c) http://pkmnation.deviantart.com
Pokemon (c) Nintendo