I handled making a PNG that should be suitable to do it with, just really not sure of the process to get it in the usable format and my computer can be finicky on some things of that sort anyway.
If anyone doesn’t know what I’m talking about, Roy has a fully functional ninth costume in the data that’s his model without his cape and back of his headband. All you have to do’s add the slot to make it work.
I did what I could, but couldn’t change the stock and battle portraits icons. ( Dunno why, the DDS are always corrupt when I try to )
The result portrait might be a bit blurry because of resizing, but you should work on a higher resolution from now on. Your edit is great but the PNG is too small to keep high quality while resizing.