Great Job
One of the best games that has been submitted in a long long time. Great variety of characters and arenas as well as a decent amount of moves. Very impressive.
P.s. here is a hint for the players. If you get stuck on a level (like the last one with our buddy the shape-shifter and you think hard is a impossible difficulty) when you die, look who dealt you the most damage, then, try to kill them first. Also, play using everyone before the shape-shifter and find out their best attacks since repeating attacks does not lessen the damage with him