Skip to content

Ben 10: Ultimate Alien

Season 1 · 20 episodes · Apr 23, 2010

  1. Ben 10: Ultimate Alien season 1 episode 1 still

    Episode 1

    Fame

    Apr 23, 2010

    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. Ben 10: Ultimate Alien season 1 episode 2 still

    Episode 2

    Duped

    Apr 30, 2010

    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. Ben 10: Ultimate Alien season 1 episode 3 still

    Episode 3

    Hit 'Em Where They Live

    May 7, 2010

    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. Ben 10: Ultimate Alien season 1 episode 4 still

    Episode 4

    Video Games

    May 14, 2010

    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. Ben 10: Ultimate Alien season 1 episode 5 still

    Episode 5

    Escape from Aggregor

    May 21, 2010

    The team encounters another alien who escaped from Aggregor and, through him, learns more about Aggregor's goals.

  6. Ben 10: Ultimate Alien season 1 episode 6 still

    Episode 6

    Too Hot to Handle

    May 28, 2010

    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. Ben 10: Ultimate Alien season 1 episode 7 still

    Episode 7

    Andreas' Fault

    Jun 4, 2010

    Then team encounters another of Aggregor's escaped prisoners, Andreas, whom Argit is using as part of a scheme against the Forever Knights.

  8. Ben 10: Ultimate Alien season 1 episode 8 still

    Episode 8

    Fused

    Jun 11, 2010

    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. Ben 10: Ultimate Alien season 1 episode 9 still

    Episode 9

    Hero Time

    Jun 18, 2010

    Ben meets his hero, Captain Nemesis, who's become jealous of all the attention Ben attracts.

  10. Ben 10: Ultimate Alien season 1 episode 10 still

    Episode 10

    Ultimate Aggregor

    Oct 10, 2010

    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. Ben 10: Ultimate Alien season 1 episode 11 still

    Episode 11

    Map of Infinity

    Oct 10, 2010

    Aggregor has absorbed all the powers of his captured aliens. Now he's after the Map of Infinity.

  12. Ben 10: Ultimate Alien season 1 episode 12 still

    Episode 12

    Reflected Glory

    Oct 15, 2010

    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. Ben 10: Ultimate Alien season 1 episode 13 still

    Episode 13

    Deep

    Oct 22, 2010

    Aggregor is after the next piece of the map on a watery planet.

  14. Ben 10: Ultimate Alien season 1 episode 14 still

    Episode 14

    Where the Magic Happens

    Oct 29, 2010

    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. Ben 10: Ultimate Alien season 1 episode 15 still

    Episode 15

    Perplexhahedron

    Nov 5, 2010

    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. Ben 10: Ultimate Alien season 1 episode 16 still

    Episode 16

    The Forge of Creation

    Nov 12, 2010

    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. Ben 10: Ultimate Alien season 1 episode 17 still

    Episode 17

    Nor Iron Bars a Cage

    Nov 19, 2010

    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. Ben 10: Ultimate Alien season 1 episode 18 still

    Episode 18

    The Enemy of My Enemy

    Dec 3, 2010

    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. Ben 10: Ultimate Alien season 1 episode 19 still

    Episode 19

    Absolute Power (1)

    Dec 10, 2010

    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. Ben 10: Ultimate Alien season 1 episode 20 still

    Episode 20

    Absolute Power (2)

    Dec 10, 2010

    Final confrontation with Kevin. While Gwen makes a last ditch effort to save Kevin, Ben fights an all out battle with Kevin.