Mii (Outfit A) is a character that lets you use a Mii. Its gender can be Male or Female, and its weight class is determined by its height and weight in the Mii Channel. Outfit A is a racing suit.
When you play in single-player mode, the Mii will be the one you chose when setting up your record. If more than one player is playing, both may choose a Mii from those available.
For Light Miis: Top Speed +3, Weight +3, Drift +3, Mini-Turbo +3. For Medium Miis: Top Speed +3, Weight +3, Off-road +3, Mini-Turbo +3. For Heavy Miis: Top Speed +3, Acceleration +3, Handling +3, Drift +3.