What can be said of this that hasn't already been said?
This is amazingly well-done by all parties involved, and I have no problem whatsoever in saying that this might very well be one the best collabs I've seen in a long time. I particularly liked the entries by R1665-- with Omega Red (I'm a bit of a Marvel Nerd, so I recognized him straight away), and HeartlessKarma-- featuring.. I wanna say Rugal (my fighting game knowledge is a tad lacking, I'm afraid).
However, I felt the one by MasterSonic was kind of lacking. That's mostly because, to me, Sonic fighting feels like it's been done to death-- what with Super Mario Bros Z, and various other Sonic flashes. This of course, is a minor complaint, as there really isn't anything wrong with it other than my personal feelings. I would never dream of taking away points just because of something like that-- especially when it's that well-done.
Now, the reason I give only a 4.5 of 5, is because there seems to be a lack of music up until the end credits. A minor nitpick, certainly, but I always like to find at least one thing in a submission that needs some form of improvement. I'll be honest here, guys; the fact that a minor problem like that is literally the only complaint that I can come up with after watching this is messing with my head big time.
So, well done guys! I would love to see more from you guys in the future.