Mii

thumb|500px|left|baby park Miis are customizable characters that were debuted alongside the Wii via the Mii Channel and the Nintendo 3DS via the Mii Maker. Their name is obviously a reference to the name of the Wii and the fact that the character can reflect the player (and of course others as well). They've since become a phenomenon and arguably the mascot of the console.

Once the player has created a Mii, they're then allowed to place the character in a game of their choice and turn them into a playable character.

On the Nintendo DS, Miis are used in the game Personal Trainer: Walking.

The Miis live in a small pocket-dimension called Mii Plaza. A version of the Mii Plaza is present on the Nintendo 3DS in the application titled StreetPass Mii Plaza.

Wii series


The Wii series of games includes the likes of Wii Sports, Wii Play, Wii Fit and Wii Music. These games' main characters happen to be Miis, and they're used in nearly every mode of each game. If the mini-game doesn't suit the Mii, then they're usually seen in the background (example: In Wii Play's ping pong game, they're seen around the table cheering you on. The table tennis mode in Wii Sports Resort actually had the Miis playing the game).

Mario series

 * In Mario Kart Wii, Miis are playable characters. They can also be found in various stages including Coconut Mall, Daisy Circuit, and Moonview Highway. The statues of Mario characters in the Luigi Circuit, DK Summit, Dry Dry Ruins, and the Block Plaza battle stage will be replaced by Miis if the user is controlling a Mii.
 * In Mario & Sonic at the Olympic Games and Mario & Sonic at the Olympic Winter Games, Miis are playable characters.
 * In Mario Super Sluggers, Miis are playable characters.
 * Miis can be seen walking in the background of some minigames in Mario Party 8.
 * Miis are used as the file select image in Mario Party 8, Super Mario Galaxy and Super Mario Galaxy 2.
 * Miis are also used in Mario Strikers Charged as the player's user.

Nintendo 3DS
The Nintendo 3DS included a Mii Maker built into it. It's almost identical to its Wii counterpart though includes the ability to take a picture of someone and have the application do all of the work. Plus, there are some new Mii parts. It can detect nearby Wiis and download Miis from that system. However, you cannot upload to the Wii from the 3DS, as there are new parts that are not on the Wii. Several games for the Nintendo 3DS have made use of the Mii Maker including Pilotwings Resort, AR Games, Nintendogs + Cats and more.