What?! You can?! That's crazy!

Yes I know that sounds crazy but it is possible.
Please note, I would recommend that you have softmodded your Wii before doing this, so you can easily do the steps.

Anyways, first. Go to a MyAvatarEditor site mirror like RC24's.

Then go and make your Mii (, you can even add special symbols to the Mii's name if you want). (Just make sure to edit the Avatar ID if you have done this already so that the 2nd/3rd/etc custom Mii you make doesn't conflict with the first.)

Now, when you're done. Hit the menu button with the save icon, then hit "Save" and then export the MAE file to somewhere on your computer.
Now, you can either put Mii Installer (1.1) onto your SD Card in

SD:/miis/

with the MAE file and install the Mii, or rename the file's MAE extension to MIIGX then installing it in SaveGame Manager GX. Both ways work fine.

Hope this anyone help wanting to make a custom Mii or trying to get custom symbols onto a Mii.
Fancy, signing out!

 

[Ryccardo]

Or:

1- Load your legal copy of Tomodachi Collection for the DS
2- Create a Mii
3- Use the multiplayer feature to copy it to a Wii

 

[FancyNintendoGamer567]

@Ryccardo
1. Tomodachi Collection was only released in Japan.
2. Meaning most people never got a copy of it or flat out don't know of its existance.
3. My method is still better because you can also add hacked symbols to the Mii name, as I noted.