Mii Channel

Mii Channel is a channel built in with the Wii which lets you customize multiple cartoon characters that you will be able to play with in games such as in Wii Sports and so on. Once you click the Mii Channel button on the screen, you will choose which sex you want your character to be, then you will choose other options such as the skin color, the size of your head/body, your color of your shirt, the type of eyes/mouth/ears/ect.. you will have. Then you can transfer your character onto selected games to play with him. You will also be able to save your characters onto the Wiimote to transfer it to your freinds consoles.

So far, videos have confirmed that you will be able to make tons of diffrent characters.

Games that use Mii Channel
Confirmed:
 * Wii Sports

Possible:
 * Wii Music