The mastermind behind the chaos is none other than Alpha, a nanite-based AI created by Rex’s nemesis, Van Kleiss. Alpha has escaped his original universe, consumed the powerful metal “Nanite Machina,” and now seeks to absorb the Omnitrix itself—an act that would give him god-like control over all technology and alien DNA.
Upon release, was a ratings hit. It garnered over 2.5 million live viewers, making it one of the highest-rated Cartoon Network premieres of 2011. Critical reception was overwhelmingly positive:
The fight is a draw. Neither can overpower the other. When Rex realizes Ben can speak and isn't a mindless creature, he stops attacking. The tension only diffuses when Bobo Haha (Rex’s talking monkey sidekick) and Providence agent Agent Six arrive. They explain that Rex’s world is infected with microscopic machines called Nanites, which mutate lifeforms into EVOs.
: The special was written by Man of Action , the creative team behind both franchises.
For those who may not be familiar, Ben 10 is a series that follows the adventures of Ben Tennyson, a young boy who discovers a powerful device called the Omnitrix that allows him to transform into different alien creatures. On the other hand, Generator Rex is a series that takes place in a post-apocalyptic world where a nanotechnology-based virus known as the "Nanite Virus" has ravaged the planet. Rex Salazar, the protagonist, is a teenager who has the ability to control and manipulate nanotechnology.
The true threat emerges in the form of Alpha, a sentient, rogue nanite swarm created by Rex’s brother, Caesar. Alpha seeks to become the ultimate lifeform by absorbing the power of the Omnitrix. This villain provides a legitimate reason for the heroes to put aside their egos. The stakes are raised when Alpha manages to copy the DNA of Ben’s aliens, creating a monstrous hybrid of nanite technology and extraterrestrial power.