Good game
Graphics are good, but they could use a tiny bit of touching up on. The ground seemed a little plain, maybe add some more texture. :) You also might want to add a little more to the Ki1o's, different colors, different text. Draw them using the line tool so you can add angles to make it look more exciting. A bit of shading would look nice too, and a bit more for the background. Add faded hills, like you see in Mario. It was a fun game, I got like 50000 or something :p. Also, maybe once you get a certain score or get to a point, make it finish off the first level and take the person to a different setting. Use that for your Charlie version. :p Just kidding about the Charlie thing, if you don't know the full alphabet, don't worry about it. Just keep making flash. :-D