Alright this is my first critique yay! Anyways There is just one thing that bug me but I'll tell you what I like first. Love how the lines look. They are very smooth and clean. Very easy to work with if I was going to use this. And I love the work you put into the detail. They are in really cute poses too. Not anything boring.
Now the thing that bugs me are that the anatomy is quite wonky in some places also. For example Nabooru's arm looks too short in comparison of her body, and her lower body is just HUGE with her torso. She seems too tiny up there if you are going to make that size. Now for the rest of them, the eyes just seem all weird, like the 'derp' face. And the necks they seem a little too elongated though I'm not an expert at this, I just know if it looks alright or not.