It is very little-known that Miis exist on the DS. There are two games as far as I know that use Miis on DS. What's being shown here is Tomodachi Collection, the predecessor to Tomodachi Life. The other one is Personal Trainer: Walking.
the problem is that now it could cause problems because while in tomodachi life the miis can be a couple respectively man and woman with today's society they will demand that everyone can with everyone and that would cause problems for nintendo since this is not so inclusive on their part and it is better to leave it that way but people would call it sexist and blah blah blah as they always do
i've used all of these except for the Wii U version. also the mii maker is literally the only reason why i downlaoded the english patch for tomadachi collection for my ds r4 card, but i made a mii as a joke and then i saved it so now i need to go delete my save data so i can keep making miis on the ds lol. of all of these mi makers, i'd rank like this based on how much time i've spent in them 1. 3DS 2. Switch (yes really is this high up) 3. Wii 4. DS (Tomadachi Collection English Patch) 5. MiiTomo (havent used it much cuz its online only and takes forever to load)
If You're Confused About DS It Actually Never Had Official One However You Can Only Make Mii Through 3 Japanese-Exclusively DS Games Included Tomodachi Collection. 3DS Broke The Limit So You Can Freely Make Miis Without Limitations. Wii & Wii U Had Much Free One Where You Can Freely Too! Switch Never Had Official One But In Order To Make Mii Just Go To Your Avatar Icon Instead However Like Wii & Wii U Miis Can Hold Up To 100 Characters!
Specifically speaking it can but it's a huge risk to do so because you are basically Bricking your iPhone and it can destroy things. To give an easy term is like homebrewing your console. I wouldnt really recommend unless you are a ok to brick your iphone
