Ben Tennyson falls through a wormhole and encounters Rex. The two heroes must unite against a foe that can absorb their powers.
Director:
Writer:
Daryl Sabara
Rex Salazar (voice)
Yuri Lowenthal
Ben Tennyson/Upgrade (voice)
Wally Kurth
Agent Six (voice)
Grey DeLisle
Dr. Holiday (voice)
John DiMaggio
Bobo Haha/Rath (voice)
J.K. Simmons
White Knight (voice)
Michael Emerson
Alpha Nanite (voice)
Jennifer Hale
Black Knight (voice)
Freddy Rodríguez
Ceaser Salazar (voice)
Dee Bradley Baker
Humungosaur/Diamondhead/Lodestar/Big Chill/Upchuck (voice)
David Kaye
Shocksquatch (voice)
Ben 10 Ultimate Alien Generator Rex Hero United Promo
