Ben 10: Omniverse Cheats for Wii
Select the 'Promotions' option at the 'Main' menu and enter one of the following codes by selecting the indicated aliens to unlock the corresponding upgrade.
Enter Feedback, Fourarms, Diamondhead, Bloxx as a code.
Enter Gravattack, Eye Guy, Arctiguana, Wildmutt as a code.
Enter Shocksquatch, Gravattack, Arctiguana, Diamondhead as a code.