2 x Black + 2 x White Gamecube Controllers + Wii U Adapter for Super Smash Bros - Walmart.com
Super Smash Bros. Wii U To Have Different Controller Options - My Nintendo News
Nintendo of America on Twitter: "Get excited! The #WiiU version of # SmashBros. will be playable with GameCube controllers. http://t.co/nmyj9QMsuU" / Twitter
Super Smash Bros. for Wii U - SmashWiki, the Super Smash Bros. wiki
Super Smash Bros. for Wii U | Wii U games | Games | Nintendo
Officially Licensed GameCube Controller Wannabes for Wii U and Nintendo Switch - YouTube
Super Smash Bros. for Wii U: Controllers
Super Mario Bros. Controllers Have Turbo So Smash Bros. Players Can Spam Fireballs - Siliconera
Report: 3DS Can Be Used As a Wii U Controller in Super Smash Bros. - IGN