Can't really see anything to suggest to fix on him, amazing follow up character. I would only like to suggest possibly having the P-Acorn attack function differently. Currently it's perfectly fine, but looks very similar to the Propeller special. Instead of jumping straight up and flying down diagonally, what if it was a damaging airdash or "run and then jump" attack?
After trying a little, his animations are very smooth and clean, and what else is there functions pretty well on the base level I suppose. Real great work so far. Will his pistol have a limit in the future, it seems like that would need a bit of tweaking currently cause you can just shoot them endlessly. Also, I would like to suggest a shorter soundbite for the first shot he does, or perhaps having the sound's audio decreased a bit? His "Mialere.txt" only has two lines of... What looks like coordinates as well? Was hoping to find out where the 1.1. only "CameraPos" code is used.
Really neat to have a neat and distinct self-insert(?). Have you done other projects in Blender before?
Well, that mechanic was certainly worth it to see, a very interesting spin on things. I wonder if you can play as the villian in a mode and try to defeat the heroes before he arrives? Happy they got Tatsu in too.