Character to character transformation

[Miracle overloading]

As the title says, I was wondering whether or not there was a lot of this kind of stuff out there.

I realize there's probably a bunch of original content out there that probably has this, but for the sake of this thread I was thinking more towards pre-established series/franchises out there.

What I mean by this is when one character in a series gets turned into another character in the series. I figure this is most likely going to overlap with TG, but I don't mean like Naruto or Ranma turning into there female equivalents.

I haven't personally seen a whole lot of this other than Nuclearkite's recent work, but if you guys know of anything, that'd be sweet.

I've gone ahead and posted every related pic I have.