Yuri Lowenthal
Ben Tennyson (voice)
Series SeasonSeason 1 episodes2010
Ben 10: Ultimate Alien
Season 1
No season overview available.
Episodes
Each episode has its own detail page.
Episode 123 min2010-04-23
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.
Episode 223 min2010-04-30
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.
Episode 323 min2010-05-07
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.
Episode 423 min2010-05-14
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.
Episode 523 min2010-05-21
Escape from Aggregor
The team encounters another alien who escaped from Aggregor and, through him, learns more about Aggregor's goals.
Episode 623 min2010-05-28
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.
Episode 723 min2010-06-04
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.
Episode 823 min2010-06-11
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.
Episode 923 min2010-06-18
Hero Time
Ben meets his hero, Captain Nemesis, who's become jealous of all the attention Ben attracts.
Episode 1023 min2010-10-10
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.
Episode 1123 min2010-10-10
Map of Infinity
Aggregor has absorbed all the powers of his captured aliens. Now he's after the Map of Infinity.
Episode 1223 min2010-10-15
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.
Episode 1323 min2010-10-22
Deep
Aggregor is after the next piece of the map on a watery planet.
Episode 1423 min2010-10-29
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.
Episode 1523 min2010-11-05
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.
Episode 1623 min2010-11-12
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.
Episode 1723 min2010-11-19
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.
Episode 1823 min2010-12-03
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.
Episode 1923 min2010-12-10
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.
Episode 2023 min2010-12-10
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.