Ben 10 / Generator Rex: Heroes United

Ben Tennyson is transported through a dimensional rift to a parallel world where he meets Rex Salazar. Although the two heroes initially clash, they must eventually set aside their differences to face a common threat. They unite to stop an entity capable of absorbing their unique powers and endangering their respective worlds.

This 2011 American animated science fiction television movie was produced by Cartoon Network Studios and Man of Action Entertainment. Directed by Chris Graham and Kenji Ono, the film features a voice cast including Daryl Sabara as Rex Salazar and Yuri Lowenthal as Ben Tennyson. Other contributors to the voice cast include Wally Kurth, Grey DeLisle, John DiMaggio, and J.K. Simmons. The screenplay was written by Joe Kelly, Duncan Rouleau, and Joe Casey.

With a runtime of 46 minutes, the production has received a positive reception from its audience, holding a rating of 7.4/10 on TMDB based on 71 votes.