Crossovers through a different universe is indeed challenging and to some impossible due to the conflicts of timeline and the plot. However Man of Action's best work's, Ben Ten and Generator Rex were able to pull it off and even makes viewers want to ask for another one.
Ben Ten Generator Rex Heroes United is a production of Cartoon Network as a special for the Generator Rex series for its 3rd season. This crossover has been the most awaited event for the series which attracted both the fans of Ben Ten and Generator Rex (like me) alike. This special has also been announced at the San Diego Comic Con just a few months ago.
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