Firstly, inspirations for the shape of the controller are immediately apparent. Yes, it mimics the form and grip of an Xbox 360 controller almost exactly, although with said pad being regarded as one of the finest ever built Nintendo cannot really be blamed for taking some cues in that respect, and one could say the 360 controller stemmed from Nintendo designs in the past anyway. This certainly isn't to say the Pro is a direct clone. In fact, it offers up more than a few quirks of its own to challenge the 360's podium spot.
Looking at a Pro Pad taken straight from the box immediately alerts you to its glossy finish on the front, not unlike that of the GamePad and Wii U console themselves. Also like them, fingerprints will inevitably turn up in view from time-to-time, though seemingly only with a direct source of light shone on it. The back of the Pro has a matte finish, mostly to help secure a better grip for the fingers and whatever surface the Pro is left on when not in use. The Pro also borrows the four-light indication pattern from the Wii Remotes to let players know which player position they're in and roughly how much power is left in the pad.
Like the GamePad, the Pro has the buttons and analogue stick on the right-hand side swapped from usual conventional control, making for a slight adjustment in the way it is used. At first, thumbs may slightly nudge against the stick when using the buttons, but it does soon become second nature. The buttons, triggers and sticks feel equally as clicky and reactive as on the GamePad, but the D-Pad is even better, giving an even more mushy and satisfying response than on the already decent equivalent of the main controller, and being in a better position for thumbs to glide straight over to it from the main analogue stick.
Again, the GamePad's control setup is in no way a bad one, but for more intense games that demand quick reactions and responsive button combinations, the Pro is difficult to beat. Tekken Tag Tournament 2: Wii U Edition is a joy to play with the Pro, offering instant movement and countering opportunities whenever needed. Sonic & All-Stars Racing Transformed reacts equally as well as on the GamePad, letting the Pro melt into hands while dominating the races.
Functionality-wise, the Pro can be used on the Wii U's main menu, through the Friends List function, and of course any game that supports it with an instant and hassle-free syncing setup. In the Pro Controller box, there is also a USB-to-Mini USB cable that lets the Pad get charged using a Wii U USB port or any other such port nearby, providing up to an immense 80 hour battery life at full power. The rumble feature does cut into this a little, but regardless that is an impressive number. The length of the cable itself is vast; longer than many previously tethered controller cables, and instantly useful should there be a requirement for re-juicing immediately from the built-in rechargeable battery.
Interestingly enough, connecting the Pro to a computer via this method does allow it to be recognized as an input device (though not yet a working one); it may only be a matter of time before skilled programmers get the pad working with PC games like with the Xbox and PlayStation controllers.