A 10 year old boy who came to possess the Omnitrix a device that allows him to transform into 1,900,003 different aliens; each with their own unique powers. Now older and possessing the Ultimatrix (an upgraded Omnitrix) Ben 10 is known as the greatest hero of the universe. Although now having an even better Omnitrix than its predecessors, Ben again considers himself the greatest hero and saved the universe a "billion times."
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