Fantastic
This is more so an overall review of all 6 because I didn't want to review every one individually.
Overall, this is a FANTASTIC series! At first glance, it doesn't seem like Mario, DBZ, and Sonic are the best combination. But then again, yours has been the first (and probably only) submission I've seen that combines the three. Despite being a DBZ "knockoff," you do a terrific job at telling the story with a unique perspective. And you make it interesting too with all of the little twists, such as different parties involved, their motives behind looking for the emeralds, etc. Don't want to spoil anything, so I'll just leave it at that.
The action gets better with each episode, which is what kept me interested. Every time I thought "ah, it can't get better than this" and every time I was wrong. Amazing fight scenes and equally amazing music.
The only flaw I can think of with this, and this is just me nitpicking, but it seems as if the sound effects are a bit disproportionate to everything else. At times they're overwhelmingly loud compared to the music. Other than that, outstanding job! I'm looking forward to your future submissions!