Mii Maker

Mii Maker (Japanese: Miiスタジオ Mii Studio) refers to a software used to design Mii characters in a Nintendo system or any compatible games that utilize Mii characters. In the context of Miitopia, the game will call this software if the player wants to create or edit a Mii in the game.

A Mii has to be given a name for the Mii creation to be valid. In Miitopia, up to 10 characters can be inputted for the Mii's name, similar to either system's character limits.

Nintendo 3DS
Miitopia for the Nintendo 3DS features its own built-in Mii Maker. This Mii Maker is similar to the pre-installed software on the Nintendo 3DS system, but it supports 24 additional colors for Mii hairstyle, eyebrows, eyes, mouth, glasses, and facial hair.

Before designing a Mii proper, the player picks the Mii's gender first. In Miitopia, male and female Mii characters are differentiated by their Traveler clothes. Every male Mii wears a belt over his robe, while female Mii characters do not. The player can still change this setting in the editor.

In the built-in Mii Maker, the player can modify the following:
 * Face: Covers head shape, skin color, makeup, and wrinkles. There are 12 options for each subcategory and 6 skin color options.
 * Hairstyle: The Mii's hairstyle, which can be mirrored. There are a total of 132 hairstyles, including a "bald" option. 8 base Mii Maker hairstyle colors are available.
 * Eyebrows: The player can move, resize, or rotate the Mii's eyebrows up to a certain threshold. There are a total of 24 eyebrow options, including a "no eyebrows" option. Like with hairstyle, 8 base Mii Maker eyebrow colors are available.
 * Eyes: The player can move, resize, or rotate the Mii's eyes up to a certain threshold. Certain eye options may allow the pupils to move to the sides during certain expressions. There are a total of 60 eye shape options. 6 base Mii Maker eye colors are available.
 * Nose: The player can move or resize the Mii's nose up to a certain threshold. There are a total of 18 nose shape options.
 * Mouth: The player can move or resize the Mii's mouth up to a certain threshold. There are a total of 36 mouth shape options. 5 base Mii Maker mouth colors are available.
 * Other: Covers glasses, mustache, mole, and beard. The glasses, the mustache, and the mole can be moved and resized. The glasses and both mustache and beard can be given colors not available in the system's Mii Maker. There are 8 glasses options, 5 mustache styles, and 5 beard styles. 6 base Mii Maker glasses colors and 8 for mustache and beard are available. This category is optional for Mii design.
 * Body: The Mii's gender, favorite color (determines base clothing color), body mass, and height. Additional Details for the Mii can be edited here too. However, if the Mii was received from another player, the creator name can not be changed. As for the additional settings contained within Details, aside from gender and favorite color:
 * Favorite?: A setting to mark or not mark the Mii as the player's favorite, which will impact the Mii's status when exported into the system's Mii Maker software. This is disabled by default.
 * Sharing: A setting to allow or not allow sharing of the Mii. This is set to "Off" by default.
 * Copying: A setting to allow or not allow copying of the Mii by other players receiving the Mii. This is set to "Don't allow" by default.
 * Birthday: Sets the Mii's birthday.
 * Creator: Sets the Mii's creator's name for attribution in case the Mii is made available for sharing/copying.

Note that if the player exports a Miitopia Mii into the Nintendo 3DS system's Mii Maker, any parts that use the 24 exclusive colors will be changed into basic Mii Maker colors.

Nintendo Switch
Miitopia for the Nintendo Switch does not have a built-in Mii Maker. Instead, whenever the player needs to create or edit a Mii in the game, the game will launch the Nintendo Switch system's Mii application, the same one accessible from the System Settings menu.

The Nintendo Switch system's Mii application is mostly similar in features as the Nintendo 3DS' Mii Maker, albeit with the facial hair (mustache and beard), mole, and glasses being split into their own categories. Gender (in-editor), favorite color, and name are all available on the main menu instead of being separate or having to go into one of the Mii part categories. The application also supports a selection of 100 additional colors for Mii hairstyle, eyebrows, eyes, mouth, facial hair, and glasses. Other details such as the Favorite mark, sharing/copying permission settings, birthday, and creator are all removed, thus allowing the user to modify and share any Mii regardless of origin.