Character Design/Animation needed for new iPhone Game

We need 12 Character designs with 3 different animations for each. The animations should be some kind of celebratory animation, a disappointed/mad animation, and a VERY simple idle animation (think blinking eyes/looking around) The style for these should be cute, fun, aliens. We need 4 males, 4 females, and 4 gender neutral. The gender neutral could be robots, or just aliens where you don't know :) Each Character should have a unique background to it. If there's a little animation to that, that's even better! We will be using these as avatars for our game so keep that in mind when designing them. They will need to fit into boxes of the following sizes of with some of the background showing :) 225x165 52x53 90x100 450x330 104x106 180x200. We will need the vector formats for these as deliverables. If you have any questions, please do ask! We are very easy to work with :)