This is just a CGI shot I found on the web of a Pokemon creature called a Lugia. In the game, Pokemon XD: Gale of Darkness, the evil organization by the name of Cipher created Shadow Pokemon 5 years ago (in the game, Pokemon Colosseum). They made a comeback in this game and created a Shadow Pokemon that could never be purified, and it's a Lugia with dark purple coloration as its shadowy appearance.
I found something strange, though. A normal Lugia's coloration in the game and TV show is a light purple with dark purple colorations on its tail, back fins, and face markings. However, from the CGI screen shot, I did an inverted filter on this photo program called Photo Suite III. The inverted colors of the Shadow Lugia look like the original Lugia.