Not a problem dude. I've enjoyed playing around with this guy. He's such a unique looking character. He looks sooo agonizingly miserable.
And remember, the unimportant characters are usually the ones people remember the most in games -- so keep that in mind! They add the mood and flavor of a particular game, perhaps even moreso than the main character!
Also, one last suggestion before I move on too -- for animation's sake, you probably should be careful with the amount of shading you add (such as with Agent K's recent edit for example) because such detailed aa requires a lot of time per-frame to get looking right (this of course matters a little less if you have a lot of frames, but still, it's an important point to remember).
The contrast, however, doesn't require a lot of aa, so that should be possible to add pretty quickly/easily if you want a darker styled sprite. The main thing to remember is to put the shadows beside/beneath/around the parts you want to "lift" or "push/pull" forward and in different directions. Agent K did a lot of this pulling/pushing/lifting in his edit with the dark shadows.
Hope that helps. Good luck with your game. I'm loving the character concept for this guy lol. Can't wait to see others you come up with.