Hi, Mii expert here. Turns out, the NPCs in TLoZ:BotW use an advanced version of the Mii format. This means that with modding, you can inject Miis into the game. Thinking about opening commissions for Mii injects, both screenshot/images of your Mii and mod downloads!
a handful of people are already very open to the idea of me doing commissions, so i'll probably end up doing it! and if you like Miis like i do, be sure to check out my website, the Mii Library, where i document every official Mii. almost at 100 Miis rn!
oh as for my personal Mii (Alice) having slightly different hair, i made this image for Reddit so i'll just repost my comment: