There, Shigeru Miyamoto said that the personal avatar concept had originally been intended as a Famicom demo, where a user could draw a face onto an avatar.

Nintendo's first public debut of free-form personal avatar software was at the Game Developers Conference in 1997, during the Nintendo 64 era. U Deluxe use Miis as playable characters. Games such as Mario Kart 8 Deluxe, Go Vacation, Super Mario Maker 2, Super Smash Bros. Miis are also used as profile pictures for Nintendo Accounts and can be used in Nintendo smart device games such as Super Mario Run and the now-defunct Miitomo.

On the Nintendo Switch, a Mii can still be used as an account avatar, but avatars depicting various Nintendo characters are also available. On the 3DS and Wii U, user accounts are associated with a Mii as their avatar and used as the basis of the systems' social networking features, most prominently the now-defunct Miiverse. Miis can be shared and transferred between consoles, either manually or automatically with other users over the internet and local wireless communications. Miis can be created using different body, facial and clothing features, and can then be used as characters within games on the consoles, either as an avatar of a specific player (such as in the Wii series) or in some games (such as Tomodachi Life and Miitopia) portrayed as characters with their own personalities. Miis were first introduced on the Wii and later appeared on the Nintendo 3DS, Wii U, Nintendo Switch and various Nintendo apps for smart devices. A Mii ( / m iː/ MEE) is a customizable avatar used on several Nintendo video game consoles and mobile apps.

Dolphin mii creator