That Sonic Amiibo figure is at it again...
This time in Mario Kart 8. Since MK is a WiiU game, you can use your Mii in the game as a playable character. However, if you combine it with the Sonic Amiibo figure, it will give your Mii a special Sonic themed motorcycle racing suit seen here. It has Sonic shoe red boots, white gloves, & detailed helmet with his face half on the front, little 'vent' ears, and a shell of spikes. This Amiibo figure really keeps the virtual items coming, if you can collect it.