No.
The game uses hand drawn animation, so adding skins like that would require redrawing every single frame of animation for a character. Every character has over a thousand frames of animation. Making one skin would require almost the exact same effort you need to make a whole new character, especially if you want to design different animations for some moves or record some new VO for the skin.
If the devs have the time and the cash to put in that much effort, then they'll just make a new character instead. That's pretty much what happened with Robo Fortune.