After button swapping my pro controllers, I decided to go a step further, welcome to the family : r/wiiu
Wii U GamePad - Wii U Wiki Guide - IGN
For Nintend For Wii U Pro Controller Usb Classic Dual Analog Bt Wireless Remote Controle For Wiiu Pro U Gamepad - Buy For Wiiu Pro U Gamepad,For Wii U Pro Controller,For Wii