For years, fans have theorized that Nintendo used Miis to build many of the NPCs (non-player characters) in The Legend of Zelda: Breath of the Wild. A Mii expert with the handle HEYimHeroic has discovered that it’s possible to convert and import traditional Miis — the ones that you can craft on the Wii, Wii U, 3DS and Switch — into the game. HEYimHeroic has stressed that the Mii and UMii file formats aren’t identical.