Wii U can use two GameCube controller adapters
How to Use a Gamecube Controller on a Wii: 5 Steps (with Pictures)
LUXMO Wired Gamecube Controller, Classic Gamecube Wii/Wii U Controller Gamepad Joystick for Gamecube Console - Walmart.com
Amazon.com: Super Smash Bros. GameCube Adapter for Wii U : Nintendo Gamecube Controller Adapter: Video Games
This Lovely White Super Smash Bros. GameCube Controller Is Up For Pre-Order From Japan | Nintendo Life
So I got this wii, but I was wondering if it was backwards compatible with the gamecube. and also do I need a gamecube controller to play gamecube games if it is? :
Gamecube Controller to Wiimote : 8 Steps (with Pictures) - Instructables
:format(jpeg)/cdn.vox-cdn.com/uploads/chorus_image/image/33660051/wii_u_gamecube_adapter.0.jpg "Nintendo GameCube controller adapter coming to Wii U for Smash Bros. - Polygon")
Nintendo GameCube controller adapter coming to Wii U for Smash Bros. - Polygon
Using a GC Controller on a unsupported game, emulating a Wiimote and Nunchuck? | GBAtemp.net - The Independent Video Game Community
Controller Adapter for Wii U with White GameCube Controller (Play-Asia.com Bundle) for Wii U
How to Use a Gamecube Controller on a Wii: 5 Steps (with Pictures)
Petition · Develop a Gamecube controller style Wii U controller · Change.org
List of GameCube Controller-compatible Wii video games - Codex Gamicus - Humanity's collective gaming knowledge at your fingertips.
Amazon.com: FIOTOK Gamecube Controller, Classic Wired Controller for Wii Nintendo Gamecube (Black) : Video Games
Wii Games Compatible Gamecube Controller | Wii Games Support Gamecube Controller - Gamepads - Aliexpress
List of GameCube Controller-compatible Wii video games - Codex Gamicus - Humanity's collective gaming knowledge at your fingertips.
raphnet. - Gamecube controller to Wiimote adapter
New Gamecube Controller for Wii U design for Smash : r/smashbros
Amazon.com: Gamecube Controller Wired Controller Gamepad Compatible with Nintendo Wii/GameCube Enhanced : Video Games
Can you use Nintendo GameCube controllers with the Wii? - Quora
GameCube Controller | Mario Kart Wii Wiki | Fandom
Wii U Gamecube Controller Adapter - Brook Gaming
Tutorial: How to use your GameCube Controller Adapter for Wii U on the vWii - YouTube
GameCube Controller Adapter for Wii U, Nintendo Switch and PC USB – Lexuma
Nintendo Gamecube Controller Luigi (Smash Bros.) - Solaris Japan
Nintendo Support: How to Use Nintendo GameCube Controllers
