Ben 10: Ultimate Alien: Season 1, Episode 10
Ultimate Aggregor (10 Oct. 2010)
Aggregor has all five aliens. The Plumbers manage to disable Aggregor's ship, forcing Aggregor to find a new way to absorb their powers. The team makes a last ditch effort to save the alien prisoners.
Writers:Joe Casey (creator) (as Man of Action) , Joe Kelly (creator) (as Man of Action) , 3 more credits »