This page contains Robopon 2: Cross Version Hints for GameBoy Advance called "Negapon" and has been posted or updated on Sep 4, 2007 by afrox. Let us know what you think of this Hint by thumbs voting.
Once you unlock Marvel Lab, enter it. Make sure you have room for at least one more Robopon. You should see a building directly in front of you. Go to the left of that building. Once there you should see a dog. Talk to it. It will tell you to input a password. Enter "9". The dog should give you Negapon. Negapon is very powerful. It turns into NegponX and Gatspon.
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