Ben 10-Generator Rex: Heroes United

Ben 10 / Generator Rex: Heroes United is an extended episode of Generator Rex with a guest appearance of Ben 10. It is set to air this Thanksgiving.

Plot
The plot for the most part is unknown; however, special footage premiered in San Diego Comic Con. In the clip, Ben sets foot into Rex's universe through a portal and is confused for an EVO, leading him to fight Rex. Eventually, the two will team up to face a common threat that is not known at the moment.

Major Events

 * Ben Tennyson meets Rex

Characters

 * Ben Tennyson
 * Rex Salazar

Aliens Used

 * Humungousaur (confirmed that he would be teleported to Rex's world in Comic-Con 2011)
 * Rath

Trivia

 * Ben and his alien counterparts will be animated in the art and style of Generator Rex.
 * Ben and Rex will have to deal with a "new gigantic threat" (voiced by a "really exciting, surprise voice actor")
 * The crossover is a part of Generator Rex's regular production cycle.
 * It is confirmed by Eugene Son that Gwen and Kevin will not be in this special.