Upchucking
If you like to stay as an alien and pound bad guys manually, then this is not for you. I forget the cheat for upchuck, but I will tell you smart ways to use it. First, put in the code if you haven't already. Then, go into any stage. Turn the omnitrix until you see the shadow of upchuck. It looks like a blob with tentacles coming out of one end. Press it and you will turn into upchuck. While you are him, he automatically sticks his tongues out and spits goo all over the screen, damaging any enemies except bosses. Upchuck can not be damaged. After he does that, you will be ben again and the omnitrix will recharge. Only use upchuck as a last resort or for fun on easy levels.
We have more cheats and tips for this game here, Ben 10: Protector of Earth cheats
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