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Ben 10: Ultimate Alien
On Cartoon Network — From Cartoon Network Studios
There's a time to go hero, and there's a time to go ultimate!
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Where to watch
Not available to stream in US
🔔 Notify me about new seasonsSynopsis
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.
Themes
Episodes
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- E1 FameNext upApr 23, 2010 · 23 min · ★ 7.0
Synopsis
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.
Guest stars: Scott Menville (Jimmy / J.T. / Pilot 2 (voice)), John DiMaggio (Will Harangue / Octagon Vreedle (voice)), Vyvan Pham (Julie Yamamoto / Computer Voice (voice))
- E2 DupedApr 30, 2010 · 23 min · ★ 8.3
Synopsis
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.
Guest stars: Jim Piddock (King Urien / Color Commentator / Chair Umpire (voice)), John DiMaggio (Forever Knight #2 / Rath / TV Reporter (voice)), Vyvan Pham (Julie Yamamoto / Computer Voice (voice))
- E3 Hit 'Em Where They LiveMay 7, 2010 · 23 min · ★ 8.3
Synopsis
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.
Guest stars: Beth Littleford (Sandra Tennyson (voice)), Paul Eiding (Max Tennyson / Guard #1 / Guard #2 (voice)), Kari Wahlgren (Charmcaster (voice)), John DiMaggio (Vulkanus / Rath (voice))
- E4 Video GamesMay 14, 2010 · 23 min · ★ 8.3
Synopsis
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.
Guest stars: Peter MacNicol (Oliver / Forever Knight #1 (voice)), John DiMaggio (Will Harangue / Octagon Vreedle (voice))
- E5 Escape from AggregorMay 21, 2010 · 23 min · ★ 8.7
Synopsis
The team encounters another alien who escaped from Aggregor and, through him, learns more about Aggregor's goals.
Guest stars: J.K. Simmons (Magister Gilhil / Plumber (voice)), Dwight Schultz (Dr. Animo / Teacher #2 (voice)), John DiMaggio (Aggregor (voice))
- E6 Too Hot to HandleMay 28, 2010 · 23 min · ★ 8.4
Synopsis
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.
Guest stars: Fred Tatasciore (Foreman / Surgeon / Hammer (voice)), John DiMaggio (Plumber / Aggregor (voice))
- E7 Andreas' FaultJun 4, 2010 · 23 min · ★ 8.9
Synopsis
Then team encounters another of Aggregor's escaped prisoners, Andreas, whom Argit is using as part of a scheme against the Forever Knights.
Guest stars: Scott Menville (Jimmy Jones (voice)), Greg Ellis (Dagonet / Reporter Chet Rigby (voice)), Alexander Polinsky (Argit (voice)), John DiMaggio (Foreverduke838 (voice)), Vyvan Pham (Mrs. Jones (voice))
- E8 FusedJun 11, 2010 · 23 min · ★ 9.0
Synopsis
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.
Guest stars: John DiMaggio (Aggregor (voice))
- E9 Hero TimeJun 18, 2010 · 23 min · ★ 8.7
Synopsis
Ben meets his hero, Captain Nemesis, who's become jealous of all the attention Ben attracts.
Guest stars: Nicholas Guest (Simons / Worker / Guest (voice)), Christopher McDonald (Captain Nemesis (voice)), Tara Platt (Jennifer Nocturne (voice)), John DiMaggio (Audience Member / Will Harangue / Rath (voice)), Vyvan Pham (Julie Yamamoto / Computer Voice (voice)), Sean Donnellan (Cameraman / Thug / Tech (voice))
- E10 Ultimate AggregorOct 10, 2010 · 23 min · ★ 8.7
Synopsis
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.
Guest stars: Paul Eiding (Max Tennyson / Guard #1 / Guard #2 (voice)), David McCallum (Professor Paradox (voice)), John DiMaggio (Aggregor (voice))
- E11 Map of InfinityOct 10, 2010 · 23 min · ★ 9.0
Synopsis
Aggregor has absorbed all the powers of his captured aliens. Now he's after the Map of Infinity.
Guest stars: Jeff Bennett (Azmuth (voice)), Paul Eiding (Max Tennyson / Guard #1 / Guard #2 (voice)), John DiMaggio (Aggregor (voice))
- E12 Reflected GloryOct 15, 2010 · 23 min · ★ 8.0
Synopsis
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.
Guest stars: Peter MacNicol (Oliver / Forever Knight #1 (voice)), Matt Levin (Cash (voice)), Scott Menville (J.T. (voice))
- E13 DeepOct 22, 2010 · 23 min · ★ 8.0
Synopsis
Aggregor is after the next piece of the map on a watery planet.
Guest stars: Kevin Michael Richardson (Magister Pyke (voice)), John DiMaggio (Ultimate Aggregor / Volann Commander (voice))
- E14 Where the Magic HappensOct 29, 2010 · 23 min · ★ 9.0
Synopsis
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.
Guest stars: Kari Wahlgren (Charmcaster (voice)), John DiMaggio (Addwaitya / Aggregor / Faint Voice (voice))
- E15 PerplexhahedronNov 5, 2010 · 23 min · ★ 8.7
Synopsis
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.
Guest stars: Jeff Bennett (Azmuth (voice)), John DiMaggio (Aggregor (voice))
- E16 The Forge of CreationNov 12, 2010 · 23 min · ★ 9.5
Synopsis
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.
Guest stars: Jeff Bennett (Azmuth (voice)), Tara Strong (Serena / Young Ben Tennyson (voice)), David McCallum (Professor Paradox (voice)), John DiMaggio (Young Four Arms / Aggregor (voice))
- E17 Nor Iron Bars a CageNov 19, 2010 · 23 min · ★ 8.7
Synopsis
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.
Guest stars: Xander Berkeley (Warden Morgg / Trukk (voice)), Fred Tatasciore (Quince / Robot Guard (voice)), Kevin Michael Richardson (Kwarrel (voice))
- E18 The Enemy of My EnemyDec 3, 2010 · 23 min · ★ 8.7
Synopsis
Argit asks Ben and Gwen for protection from Kevin, so they take him to the nearest Plumbers Academy, but that won't stop Kevin.
Guest stars: Rob Paulsen (Technician / Rhomboid Vreedle / Engineer #2 (voice)), Alexander Polinsky (Argit (voice)), John DiMaggio (Magister Coronach / Octagon Vreedle (voice)), Jeff Bennett (Pops Vreedle / Jailer (voice))
- E19 Absolute Power (1)Dec 10, 2010 · 23 min · ★ 8.5
Synopsis
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.
Guest stars: Paul Eiding (Max Tennyson / Guard #1 / Guard #2 (voice)), Wil Wheaton (Mike Morningstar / Darkstar (voice)), Zeno Robinson (Alan Albright / Heatblast (voice)), John DiMaggio (Vulkanus / Rath (voice))
- E20 Absolute Power (2)Dec 10, 2010 · 23 min · ★ 8.7
Synopsis
Final confrontation with Kevin. While Gwen makes a last ditch effort to save Kevin, Ben fights an all out battle with Kevin.
Guest stars: Chris Pratt (Cooper (voice)), Paul Eiding (Max Tennyson / Guard #1 / Guard #2 (voice)), Wil Wheaton (Mike Morningstar / Darkstar (voice)), Zeno Robinson (Alan Albright / Heatblast (voice)), John DiMaggio (Vulkanus / Rath (voice))
Cast & crew
Created by Joe Casey, Duncan Rouleau, Joe Kelly, Steven T. Seagle
Yuri Lowenthal
Ashley Johnson
Greg Cipes
Dee Bradley BakerImages · 14
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Reviews · from TMDB members
JennyAug 3, 2025
🌟 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,… Read more
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.
