“There's a time to go hero, and there's a time to go ultimate!”
With his secret identity now revealed to the world, Ben Tennyson continues to fight evil as a superhero with the help of the newly acquired Ultimatrix.
Where to Watch
Streaming, rent and purchase options
Episodes
1. Fame
Ben's secret is out. As Ben deals with his newfound fame, a new threat emerges as a thief steals parts of a new advanced spaceship from NASA.
2. Duped
Ben is supposed to attend a tournament to support his girlfriend, but the Forever Knights are trying to break into a museum. Ben tries to use the Ultimatrix to handle all his obligations.
3. Hit 'Em Where They Live
After Jimmy Jones reveals Ben's identity, some of his enemies (such as Zombozo, Rojo, Charmcaster, Vulkanus, and Sevenseven) team up to try to attack his family. Now Ben and his friends have to protect them no matter what.
4. Video Games
Ben gets an offer to star in his own video game, but the designer's real motives are part of a plan to destroy Ben.
5. Escape from Aggregor
The team encounters another alien who escaped from Aggregor and, through him, learns more about Aggregor's goals.
6. Too Hot to Handle
P'Andor, escaped from Aggregor, now wants help to escape his encapsulating suit, but Kevin's the first to perceive that that's a fatally bad idea.
7. Andreas' Fault
Then team encounters another of Aggregor's escaped prisoners, Andreas, whom Argit is using as part of a scheme against the Forever Knights.
8. Fused
Ra'ad, the last of Aggregor's escaped prisoners, attacks Ben and informs the team of the true fate of his comrades. He finds a safe hiding place but one that endangers Ben in the process.
9. Hero Time
Ben meets his hero, Captain Nemesis, who's become jealous of all the attention Ben attracts.
10. Ultimate Aggregor
Aggregor has all five aliens. The Plumbers manage to disable Aggregor's ship, forcing Aggregor to find a new way to absorb their powers. The team makes a last ditch effort to save the alien prisoners.
11. Map of Infinity
Aggregor has absorbed all the powers of his captured aliens. Now he's after the Map of Infinity.
12. Reflected Glory
Cash and JT convince the team to allow them to take credit for the team's actions so they can earn money for Cash's mother's operation.
13. Deep
Aggregor is after the next piece of the map on a watery planet.
14. Where the Magic Happens
Aggregor escapes to a magical dimension. Gwen asks for Charmcaster's help to pursue him. The team learns about Charmcaster's past and why she's willing to help them now.
15. Perplexhahedron
With the fourth piece of the Map of Infinity almost in Aggregor's clutches, the gang chase him through the artificial planetoid known as Perplexahedron.
16. The Forge of Creation
As the team makes its final attempt to stop Aggregor, they find an unexpected ally, and one person will make a fateful decision with lasting repercussions.
17. Nor Iron Bars a Cage
Kevin's out for payback on anyone who has ever crossed him. His next stop is a prison in the Null Void. Ben and Gwen try to stop him, where Ben comes to a grim decision.
18. The Enemy of My Enemy
Argit asks Ben and Gwen for protection from Kevin, so they take him to the nearest Plumbers Academy, but that won't stop Kevin.
19. Absolute Power (1)
Kevin starts going after Plumbers kids to gain more power. Ben and Gwen continue to argue about how to handle the situation. Gwen tries to find someone who will help her cure Kevin.
20. Absolute Power (2)
Final confrontation with Kevin. While Gwen makes a last ditch effort to save Kevin, Ben fights an all out battle with Kevin.
Cast & Crew
Yuri Lowenthal
Ben Tennyson (voice)
Ashley Johnson
Gwen Tennyson (voice)
Greg Cipes
Kevin Levin (voice)
Dee Bradley Baker
Humungosaur (voice)
Story & Production Details
Reviews & Thoughts
🌟 10/10 – The Pinnacle of Ben 10: Complex, Mature, Unmatched 🌟 Ben 10: Ultimate Alien is the best in the franchise, blending epic storytelling, complex character arcs, and high-stakes action in a seamless ride. It’s a dramatic evolution from its predecessors, diving deep into the consequences of Ben’s growing powers and responsibilities. The Ultimatrix takes the story to new heights, demanding not just strength, but wisdom and sacrifice. The villains are more nuanced, the emotional stakes hit hard, and the development of relationships—especially Ben and Kevin’s—is far more compelling than the lighthearted Omniverse. Where Omniverse went for a more cartoony feel, Ultimate Alien strikes the perfect balance of mature storytelling and thrilling adventure, making it feel more like a superhero saga than a kids' show. If you're looking for the best Ben 10, this is it. Unforgettable storylines, epic moments, and a complex finale about control, everything that Omniverse could never match.
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