YinYin

[STM1993]

I tend to press Ctrl+S just before closing any data files I've opened, even if just for looking at it without any modding. I must've accidentally done that and caused LF2 to read it as a modded file. Here's a very bad replay after I've reinstalled with original data. No, I didn't open any of the Y2F files, I downloaded & installed stage 4 straight into my LF2 folder.

I guessed YinYin would absorb Firzen's ability to use fire & ice permanently because he already gains an elemental charge when hit by them. So I figured in a cinematic, he'd fight Firzen, grab him, and upon absorption, kaboom while Firzen splits into a dead pair of Firen & Freeze as a homage to fusion.

Stage 5... well I don't really know, but I noticed you used a clever trick with _mirror sprites, 100% sure Julian will run in from the right at some point during cinematic. Won't be surprised to know if he gets absorbed too. I speculate some nasty mirror image/teleport use, super has Soul Bomb, maybe LF1 big bang(multiple explosions around self) will make an appearance. Might also have some annoying skulls here and there to disrupt the player before YinYin goes for the kill. I might be able to make a better guess if I know the name of stage 5's scenario.

Tried him again. Here are a list of things I get annoyed by:
1) This only happened once in many many replays, but he actually managed to use the stage 3 explosion move once. I didn't record it.

2) In stage 4-1, you can sometimes run into the "cinematic" overwhelming disaster at the far end and take damage. You will always get back 500hp in 4-2, but it is possible to appear in 4-2 in frozen state and thus become a free hit.

3) Multiple volcanoes in a row, as a result it is possible to get killed from 500 to 0 even at the very beginning. He volcanoes once, you get hit and fly far away. He dashes at you immediately after the first volcano, and then volcano again. Even if you managed to dodge twice, you can still be chased for a 3rd volcano. There should be some delay between jumps, considering how 1 volcano can easily take 50% hp and how auto-heal doesn't work until you're on the ground.

4) He can jump attack anytime, and hit lag makes this even more dangerous. This means that halfway through hitting him, he could suddenly decide to jump very low and thus land immediately, resulting in a point-blank volcano. You can see this in the bad replay attached. That's definitely a cheap shot alongside the falling + explode.

5) He can punch you out of burning(or during first frame of freezing, overwhelming disaster) and leave you standing instead of fallen. Notable that while the normal punches aren't painful, the auto-heal doesn't work unless you're on the ground. Wouldn't mind it that much if not for the AI deciding to volcano point-blank.

EDIT:
You can see points 3 & 4 below.

Volcano on hit. Volcano on fall. And how rapidly he can chain volcanoes(I'll admit my dodge there wasn't great though).