The Follower can be found in Whiterun The Bannered Mare
If you want your character to be Gardevoir than in game press "~" and type help Gardevoir and than when you see it in the list then type player.additem "the number that you see next to the name" 1
and press enter then just equip it.
So, I tried using this mod, and it didn't work (my character's head disappears and nothing else changes). I had a bunch of other mods installed, but I disabled them with Vortex Mod Manager. The only mods I had installed and enabled were SkyUI, HDT Physics Extensions, AddItemMenu, UI Extensions, Skyrim Script Extender, and Realistic Ragdolls and Force. Any help?