Nintendo clarifies that Wii U GameCube Adapter ONLY Compatible With Super Smash Bros, not "all games that use Wii U Pro Controller/Wii Classic Controller" : r/Games
Buy Pro Controller for WIIU | retroplace
Nintendo responde a Microsoft por la comparación entre Wii U y Xbox 360 - Nintenderos
Buy Hori Classic Controller for Wii U - Pikachu Ver. [Wii U]
Official Nintendo Wii Classic Controller Pro - Red Games Accessories | Zavvi España
Con Cable Para Wii U Mando A Distancia Negro Classic Controller Pro - Buy Para Wii U Remoto Controlador Clásico Para Wii U Negro Mando Clásico Pro Para Wii Mando Clásico Negro
Wii U Controller Pro & Wired Wii Classic Controller Pro Joypad for Wii U | eBay
Amazon.com: Old Skool Classic Controller for Wii and WiiU White : Video Games
Comprar Nintendo Wii Classic Controller Compatible | Accesorios
The mini NES Classic controller works with your Wii U Virtual Console games - Polygon
Classic Controller | Wii | Support | Nintendo
Buy Classic Controller Luigi - Used / Loose (Wii U Japanese import) - nin-nin-game.com
Pro Controller U - Now that I've learned that it can't actually be used as a Wii U Pro Controller. And the package seems to make it quite clear that it can.
Old Skool Classic controller for Wii and WiiU - White - Walmart.com