I know you got better, but I just want to critique on some things.
1. Too reliant on OCs, At least a fourth of the cast.
It isn't bad for say, also you made some pretty nice OCs, but original source characters are important.
2. Font choice with Mario's home and green text was an eyesore to read.
3. The laughable MS paint artwork
4. Overused Sprite for Super mario (Mario with chaos emeralds.) be creative with it, experiment, experiment until you have a Sprite you think works.
5. Lack of exposition. We are kinda thrown into the mix, you should try starting with showing a brief clip of how they got there.
6. "Warping". An often trick that doesn't look good and unprofessional. This is when you change the sprites height, width, etc to show movement. Getting crushed is a good example of when this would work fine, but not for fighting.
A little bit of nitpicking: Not a problem, but it doesn't make much sense to make your own chaos emeralds.