I did this just to improve his looks a bit. I got rid of the air bellow (a fairly lame gimmick IMO), and modified the cannon to look more like a cannon. I took off the chest sticker and repainted the tank treads. I added some paint to the feet, waist, back of the arms, and around the eyes. I may paint it green like the larger version sometime in the future, but for now it at least looks better than it did.