This video provides a Tutorial For How To Unlock All The Default Secret Characters In Mario Kart 8 For The Wii U. As mentioned in the video, in order to unlock all the Default Hidden Characters In Mario Kart 8 that encompass Baby Rosalina, Iggy Koopa, Lakitu, Larry Koopa, Lemmy Koopa, Ludwig von Koopa, Metal Mario, Mii, Morton Koopa Jr., Pink Gold Peach, Rosalina, Roy Koopa, Toadette, and Wendy O. Koopa you will need to obtain 14 Gold Trophy awards in different Grand Prix Cups. As also relayed in the video, every time you complete a Grand Prix Cup with a Gold Trophy, by winning at least 3 out of 4 races, you will unlock a Random Character; however, you cannot repeat a Grand Prix on the same difficulty or engine class (50cc, 100cc, 150cc) that you already earned a gold trophy award within to be able to unlock additional playable characters. Essentially, you will need to earn the gold trophy award in 14 different Grand Prix Cups (Grand Prix Cups with different engine classes) to unlock all 14 Secret Characters In Mario Kart 8 For The Wii U. The other characters, the pay money to unlock characters, also known as the DLC characters, can likely be purchased for premium prices from the Nintendo eshop on the Wii U.