For many 3DS games like Tomodachi Life , Mario Kart 7 , or Super Mario Maker , having a Mii is not just a cosmetic choice—it's a requirement to play. However, because Citra is an emulator and not a full console, it doesn't always come with the system applications like pre-installed.
Mii Maker is the official system application used to create and store up to 100 virtual avatars on the Nintendo 3DS. When using the Citra emulator , certain games will crash or show characters with red circles for faces if the Mii data is missing. How to Get Mii Maker on Citra citra mii maker download
If you cannot dump the app itself, you can find "Mii data" or "system data" files online. These are often shared in communities like r/Roms on Reddit . For many 3DS games like Tomodachi Life ,