So Nintendont was updated to support the GC adapter for Wii U. This is now possible. : r/wiiu

Nintendont, Page 2017

Made my Wii U portable : r/wiiu

I created a monster, a beutiful monster. Added an “internal SSD to my Wii U as well as Gamecube Ports. And yes it works: : r/ wiiu

Connect two GC controllers to a Wii or Wii U system. Built in Turbo. Compatible with all games supported by the Wii Classic Controller, Wii Classic

Mayflash GC Controller Adapter for Wii & Wii U (Dual Pack), White

So Nintendont was updated to support the GC adapter for Wii U. This is now possible. : r/wiiu

Controller Adapter for Gamecube- Compatible with nintendo switch, wii u, pc, You can play the super smash bros on Wii U and Switch, Plug the two usb

Y Team Controller Adapter for Gamecube, Compatible with Nintendo Switch, Super Smash Bros Switch Gamecube Adapter for WII U/PC with 4 Port

Wireless GC controller options for Nintendont? - The Independent Video Game Community

Because the Wii U contains a stripped down Wii It Is capable of natively playing GameCube but due to a lack of controller, memory card and a different disc drive that was

I did not know that nintendont runs gamecube games better than a regal gamecube :O : r/WiiHacks