Amazon has put up a listing for the upcoming Hori Super Mario Maker Wii U GamePad Protector, which is available for preorder with this link. You can check out some photos of the protective case with our media gallery below this paragraph.
As you can see above, the officially licensed Wii U GamePad Protector is themed after the recently-released Super Mario Maker. It shows off Mario in his builder outfit along with several enemies and structures.
For the uninformed, the product is designed to protect both the front and back sides of the Wii U GamePad from dirt, scratches and other minor damages. Of course, all of the buttons and ports (including the charging cable as the protector can be use in conjunction with the official Wii U charging cradle) will be accessible.
Super Mario Maker is one of the few Wii U games to make use of the unique features of the GamePad as gamers can easily create 2D levels (with templates from Super Mario Bros., Super Mario Bros. 3 Super Mario World and New Super Mario Bros.) by using the stylus with the touch screen. If you are worry about damaging the controller, you should take a look at the Super Mario Maker Wii U GamePad Protector, which is releasing on the 20th of October.