This is a live action movie of the cartoon Ben 10: Ultimate Alien but from in alternate universe.
Vilgax returns, and Ben has to stop him.
- Ben Tennyson (Ryan Kelley)
- Kevin Levin (Nathan Keyes)
- Gwen Tennyson (Galadriel Stineman)
- Max Tennyson (Barry Corbin)
- Juile Yamomoto (Megan Fox)
- Sir George (Gary Oldman)
- Swampfire (Dee Bradley Baker) (2x; second time gone ultimate)
- Cannonbolt (Steve Blum)
- Echo Echo (Dee Bradley Baker)
- Rath (Dee Bradley Baker)
- Bigchill (Dee Bradley Baker)
- Amphibian (Dee Bradley Baker)
- Ultimate Swampfire (Dee Bradley Baker)
- Waybig (hologram only)
- Vilgax (Hugo Weaving)
- Diagon (Tony Todd)
- This is the first time Steve Blum voices Cannonbolt.