Ben 10/Generator Rex: Villains United Part 3

Ben 10/Generator Rex: Villains United Part 3 is the third part of an upcoming sequel to Ben 10/Generator Rex: Heroes United. It is part of the Ben 10: Maximum Heroes' production cycle. It switches between Ben 10 and Generator Rex style animation.

Synopsis
Ben and Rex return from the Null Void after beating Nanite Alpha and go their seperate ways, only to find out that each of their respective worlds is controlled by the other's villain.