One of our most important new additions are "Load-outs," which is what your current character is. It's not a disguise, it's a completely different person. You can have 3 load-outs. All of them will level separately, all of them can have separate perks, and are overall just another save file. As you became your current character in the middle of the update, you cannot further customize anything other than your eye and hair color. Because that feature was pretty cheap.