raphnet. - Classic controller to Gamecube/Wii adapter
GameCube Controller for Nintendo Wii and GameCube [2 Packs]
Hands On: Wii U GameCube Controller Adapter | Nintendo Life
How to: Use a Gamecube Controller for the Wii U! - YouTube
How to Connect a GameCube Controller to the Wii - Howchoo
Amazon.com: Hyperkin ProCube Wireless Controller for Wii U (White) : Everything Else
Guide to the Best GameCube Controller Adapter for Nintendo Switch
Official Nintendo GameCube Controller Pad GC Switch Wii Tight Stick Japan Import | eBay
34 Wii Games with GameCube Controller Support - YouTube
Just Got One of Those Gamecube Controllers That Plug Into the Wii Remote. What's the Difference Between These and the Actual Gamecube Controllers? : r/smashbros
Amazon.com: HORI Battle Pad for Wii U (Mario Version) with Turbo - Nintendo Wii U : Video Games
Use a GameCube Controller to Play Super Smash Bros. on the Wii U | PCMag
GameCube Controller Adapter for Wii & Wii U (Dual Pack), White
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 by L