2020 contained a series of leaks obtained from Nintendo dubbed the "Gigaleaks". As it released throughout the year, the Mii Library refers to content in these leaks through the month it was leaked, for better organization. In September of 2020, much was leaked, a lot of it pertained to the Wii, including Wii Sports Resort, but some information pertained to the 3DS. Some of this content includes debug applications for the 3DS system, including a few that contained Mii data. While several 3DS debug apps related to Mii data, the ones that actually contained Miis are the FriendAddTool and FriendTestingPartner applications. More information about each application is found on the Miis' pages. Friend is from the FriendAddTool, and the four Partner Miis are from the FriendTestingPartner app.