Mii

A Mii (Pronounced like "me") is a virtual character that you can create on the Mii channel on the Nintendo Wii. You can choose how tall and wide your Mii is, as well as facial features such as eyebrows, nose, and lips.

Mii Storage
A single Wii can hold 100 Miis, and Miis can be transfered to a Wii remote for taking to a friend's Wii, for example. Up to ten Miis can be held on a single remote.

Mii Sharing
Miis can be sent to other Wiis, as long as the person sending the Mii has the other Wii's code, and vice versa. This can be done via the Mii channel, or when sending a message from the Wii message board, the Mii's face can be shown at the top of a letter.

Mii Usage
Multiple Wii games involve using Miis. Wii sports allows you to choose what Mii you want to play with, as well as Wii Play, and Wario Ware: Smooth Moves.

Links
Mii Plaza