In your FitMewtwo.pac, what does it say for the third option. It's ef_something.
It says ef_mizuo.
Did you download my Mewtwo edit?
2.) Elaborate on this. Is it T-Posing? If so, then you need to use the FighterXX.dat I made for Mewtwo.
I feel really stupid now, because I WAS using your files for Mewtwo, but I forgot to replace the Ex files because I already had some. But putting in your Fighter.dat totally fixed the T-posing issue, thanks!
If you do happen to find a way to fix the GFX problem on the shadowball I would love to know. Everything else on Mewtwo works great!