Well, I am trying to get a dark aura....
But I'll be fair here. The tremendous amount of effort here is obvious, as is the lack of good sprites. You need better materials to work with buddy, and that usually means making em yourself unfortunately. Sprite sheets are easy enough to find if you look, so start looking.
My main qualm with this movie is how weak you made Zero look. Zero would've kicked Gemini man's ass in .0001 seconds. X is a blundering fool who just gets lucky sometimes and has all his allies and armor upgrades to help him.
The teleport animations were complete crap, to be blunt, as were the damage animations. To restate, you need better sprites!!!
One last thing, and I tell this to everyone. Don't base your decision to make another movie on whether your reviews of your first movie are good. That's just stupid.