OK, so it's extremely possible I'm alone when it comes to preferring the custom-painted system below to the official one that was released in Japan late last year.
Of course, I've always appreciated dramatic-looking consoles, and this Charizard-branded GameBoy certainly fits that bill.
As for who's responsible for this colorful concoction, that would be artist and blogger Oskunk, of custom-art.blogspot.fr.
The backside of this particular GameBoy is nearly as beautiful as its front, in my opinion--although I think it would look even better with copy of Pokémon Red stuck into it, don't you think?
See also: other posts about Oskunk's stuff