Hehe, this is cool. I haven't seen this series yet. The background is neat, and same with the layout. A few things: 1. With that big brown thing (I'm not sure what it is...lol, sorry. Still have to watch this series, remember OX ) the eyes look a little jaggy, same with the spots under it's eyes. The brown in it's nose also doesn't touch the black outline. 2. With the girl, some of the color bleeds out onto the brown thing. The vector itself of her is really good! Good work.
Hope what I said helped..
^_^