Not bad.
SKILLET is my group. Plus that song "hero" is so cool. The animation wasn't bad. But needs improvement.
The characters had a look for a comedy style cartoon. Their eyes were way too big. Like simpson and parent hood characters. They were doing some pretty cool naruto/ DBZ stuff, but the characters didn't seem to fit. I think if you improve on the characters look, you dont need to change the genre of cartoon at all. If you like animating fighting characters continue to do so. You seem to be really good at choreographing a animated fight scene.
Overall it was awesome. Continue to make more. Oh and buy an old cheap pen tablet. It will save you some serious time and you wont have to use the line tool and go back to connect all the lines together.