Great Animation
The animation was the hilight of this for me. The intro 'back story' portion was a tad bit long. I read it, but felt a little anxious scrolling through each page. then came the cartoon itself.
As I mentioned before, the animation blew me away. I'm a huge fan of frame-by-frame stuff and this was FULL of it. However, there were a few tweeny parts that felt a bit 'off' (not to say that tweening is bad). At times, the art was inconsistent. Not so much character model-wise, but quality-wise. Some still shots where nothing but looped cape movement was happening, etc.
Call me nitpicky if you will, and I really don't mean to sound like I 100% know what I'm talking about; this is just what I see.
The voice acting could use a little work. It is not up to par with the animation. There ought to be some real crazy screaming and some raw emotion in there.
The character designs aren't really my cup of tea either. I can't say they're bad; they're just not my type. Though, I really love the black, ninja-esque dude with the red, firey outline. High-five on that one.
One final thing I'm gonna nitpick on is the action VS plot/character development. Tons and tons of badass animation and fight scenes. Really smooth, cool stuff. But that took up MOST of the cartoon and I was left wondering a little more about what was going on and who these guys were, etc.
It's probably just me, though. These are just my casual observations. Please keep it up. I want to see more.