I didn't read any of the comments, so sue me if i copy anything or put the convo on a tangent.

Fire main is supposed to be a more ninjitsu based special assist character. If you look back to the beginning of the game when you choose the first main character, it said something like specializes in ninjitsu and a lot of other things. Also, we need diversity like this. If you don't like fire main, just switch!