its not really a movie more like a long episode. its called "Ben 10/ Generator Rex Heroes United.
There is no movie called Generator Rex. Generator Rex is an animated children's TV series.
Generator Rex - 2010 Ben 10 Generator Rex Heroes United 3-10 was released on: USA: 25 November 2011
ya, i thought that was funny
Ben 10 would win because generater rex can use different kind of machines but ben 10 can turn into different aliens.
Both shows, Generator Rex & Ben 10 have ceased production so No, there's no reason to believe there will be another crossover for the characters.
Generator Rex and Ben 10 aren't anime. But it depends on how popular the series is. Try looking on the official website.
benrex
The duration of Generator Rex is 1380.0 seconds.
Generator Rex was created on 2010-04-23.
Ben 10 because he can transform into many aliens for eg. strong ones-clever ones-huge ones etc.
A band named orange. the song is called "Revolution"
the new show is Ben 10 Omniverse. it is set to air in the end of 2012. It is also said that they might not make the show and add a new season of generator rex instead. But as of now, its gonna be Ben 10 omniverse.