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The Best Episodes of Ben 10: Ultimate Alien Season 1

Every episode of Ben 10: Ultimate Alien Season 1 ranked from best to worst. Discover the Best Episodes of Ben 10: Ultimate Alien Season 1!

Binge this in 7h 40m•Peaking at 9.3/10

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.

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Episode Rankings

  1. #1 Fan Favorite
    Ben 10: Ultimate Alien Season 1 Episode 16 - The Forge of Creation
    9.3/10(1228 votes)

    S1:E16

    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.

    Director:Dan Riba
    Writers:Joe Casey, Joe Kelly

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  2. Ben 10: Ultimate Alien Season 1 Episode 15 - Perplexhahedron
    8.8/10(908 votes)

    S1:E15

    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.

    Director:Matt Youngberg
    Writers:Joe Casey, Joe Kelly

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  3. Ben 10: Ultimate Alien Season 1 Episode 20 - Absolute Power (2)
    8.8/10(769 votes)

    S1:E20

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

    Director:Dan Riba
    Writers:Joe Casey, Joe Kelly

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  4. Ben 10: Ultimate Alien Season 1 Episode 11 - Map of Infinity
    8.7/10(673 votes)

    S1:E11

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

    Director:Matt Youngberg
    Writers:Joe Casey, Joe Kelly

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  5. Ben 10: Ultimate Alien Season 1 Episode 19 - Absolute Power (1)
    8.7/10(728 votes)

    S1:E19

    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.

    Director:Dan Riba
    Writers:Charlotte Fullerton, Joe Casey, Joe Kelly

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  6. Ben 10: Ultimate Alien Season 1 Episode 5 - Escape from Aggregor
    8.4/10(656 votes)

    S1:E5

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

    Director:Butch Lukic
    Writers:Charlotte Fullerton, Joe Casey, Joe Kelly

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  7. Ben 10: Ultimate Alien Season 1 Episode 10 - Ultimate Aggregor
    8.4/10(639 votes)

    S1:E10

    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.

    Director:Matt Youngberg
    Writers:Joe Casey, Joe Kelly, Matt Youngberg

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  8. Ben 10: Ultimate Alien Season 1 Episode 14 - Where the Magic Happens
    8.3/10(654 votes)

    S1:E14

    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.

    Director:Butch Lukic
    Writers:Joe Casey, Joe Kelly

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  9. Ben 10: Ultimate Alien Season 1 Episode 8 - Fused
    8.2/10(612 votes)

    S1:E8

    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.

    Director:Dan Riba
    Writers:Len Uhley, Duncan Rouleau, Joe Casey

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  10. Ben 10: Ultimate Alien Season 1 Episode 6 - Too Hot to Handle
    8.1/10(616 votes)

    S1:E6

    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.

    Director:Matt Youngberg
    Writers:Marty Isenberg, Joe Casey, Joe Kelly

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  11. Ben 10: Ultimate Alien Season 1 Episode 17 - Nor Iron Bars a Cage
    8.1/10(621 votes)

    S1:E17

    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.

    Director:Butch Lukic
    Writers:Joe Casey, Joe Kelly

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  12. Ben 10: Ultimate Alien Season 1 Episode 18 - The Enemy of My Enemy
    8.0/10(616 votes)

    S1:E18

    Argit asks Ben and Gwen for protection from Kevin, so they take him to the nearest Plumbers Academy, but that won't stop Kevin.

    Director:Matt Youngberg
    Writers:Len Uhley, Duncan Rouleau, Joe Casey

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  13. Ben 10: Ultimate Alien Season 1 Episode 3 - Hit 'Em Where They Live
    7.8/10(631 votes)

    S1:E3

    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.

    Director:Matt Youngberg
    Writer:Len Wein

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  14. Ben 10: Ultimate Alien Season 1 Episode 7 - Andreas' Fault
    7.8/10(612 votes)

    S1:E7

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

    Director:Dan Riba
    Writers:Ernie Altbacker, Joe Casey, Joe Kelly

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  15. Ben 10: Ultimate Alien Season 1 Episode 9 - Hero Time
    7.8/10(608 votes)

    S1:E9

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

    Director:Matt Youngberg
    Writers:Steven Barnes, Joe Casey, Joe Kelly

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  16. Ben 10: Ultimate Alien Season 1 Episode 1 - Fame
    7.7/10(753 votes)

    S1:E1

    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.

    Director:Dan Riba
    Writer:Dwayne McDuffie

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  17. Ben 10: Ultimate Alien Season 1 Episode 13 - Deep
    7.5/10(598 votes)

    S1:E13

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

    Director:Dan Riba
    Writers:Marty Isenberg, Joe Casey, Joe Kelly

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  18. Ben 10: Ultimate Alien Season 1 Episode 4 - Video Games
    7.0/10(618 votes)

    S1:E4

    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.

    Director:Dan Riba
    Writers:Joe Casey, Joe Kelly

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  19. Ben 10: Ultimate Alien Season 1 Episode 2 - Duped
    6.7/10(659 votes)

    S1:E2

    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.

    Director:Butch Lukic
    Writer:Len Uhley

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  20. Ben 10: Ultimate Alien Season 1 Episode 12 - Reflected Glory
    6.5/10(584 votes)

    S1:E12

    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.

    Director:Matt Youngberg
    Writers:Peter David, Joe Casey, Joe Kelly

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Season 1 Ratings Summary

"The Forge of Creation" is the best rated episode of "Ben 10: Ultimate Alien" season 1. It scored 9.3/10 based on 1228 votes. Directed by Dan Riba and written by Joe Casey, Joe Kelly, it aired on 11/12/2010. This episode is rated 0.5 points higher than the second-best, "Perplexhahedron".