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The Best Episodes of Ben 10: Ultimate Alien

Every episode of Ben 10: Ultimate Alien ranked from best to worst. Let's dive into the Best Episodes of Ben 10: Ultimate Alien!

The Best Episodes of Ben 10: Ultimate Alien

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...

Seasons2

  1. Background image for Solitary Alignment
    9.3/10(3 votes)

    #1 - Solitary Alignment

    S2:E23

    Azmuth reveals the origin of the sword and how he first encountered Old George. Ben comes to a decision on how to handle the Daigon.

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  2. Background image for The Enemy of My Frenemy
    9.3/10(3 votes)

    #2 - The Enemy of My Frenemy

    S2:E25

    Gwen and co revisit Legerdomain in hopes of rescuing Charmcaster.

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  3. Background image for Couples Retreat
    9.3/10(3 votes)

    #3 - Couples Retreat

    S2:E26

    After Darkstar opens the Door to Anywhere, Charmcaster comes through, and the two team up to give Ben, Gwen, and Kevin the fight of a lifetime.

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    Director:Dan Riba
  4. Background image for The Forge of Creation
    9.1/10(590 votes)

    #4 - The Forge of Creation

    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.

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    Director:Dan Riba
  5. Background image for It's Not Easy Being Gwen
    9.0/10(605 votes)

    #5 - It's Not Easy Being Gwen

    S2:E9

    Gwen has always been a multi-tasker, trying to juggle school, hobbies, friends and her work as a hero, waking up early and going to sleep late. But Gwen's already packed day is about to get worse when Dr. Animo attacks with an army of giant frogs and Gwen is forced to make a hard choice.

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  6. Background image for Catch a Falling Star
    9.0/10(3 votes)

    #6 - Catch a Falling Star

    S2:E27

    Movie starlet Jennifer Nocturne is recaptured by the evil Captain Nemesis!

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    Director:Butch Lukic
    Writer:Len Uhley
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    The 20 WORST Episodes of Ben 10: Ultimate Alien

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  8. Background image for Ben 10,000 Returns
    8.8/10(558 votes)

    #7 - Ben 10,000 Returns

    S2:E10

    Following a visit from Paradox after a fight with Eon, Ben 10,000 arrives 20 years from the future to seek the aid of his past counterpart in tracking down Eon.

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  9. Background image for Perplexhahedron
    8.7/10(506 votes)

    #8 - Perplexhahedron

    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.

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  10. Background image for The Flame Keeper's Circle
    8.7/10(3 votes)

    #9 - The Flame Keeper's Circle

    S2:E16

    Julie gets Ben to visit a charity organization who wants to improve the world with alien technology. Ben soon discovers the charity's benefactor is an old enemy.

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    Director:Dan Riba
  11. Background image for Double or Nothing
    8.7/10(3 votes)

    #10 - Double or Nothing

    S2:E17

    Ben finds out there's a new show called 'Ben 10: Live." He finds an old enemy running the show and cashing in on his fame.

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  12. Background image for Inspector #13
    8.7/10(3 votes)

    #11 - Inspector #13

    S2:E24

    A Techadon weapon master comes to Earth and wants the Ultimatrix.

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  13. Background image for The Ultimate Enemy (1)
    8.7/10(3 votes)

    #12 - The Ultimate Enemy (1)

    S2:E31

    Dagon is getting closer and closer to entering our dimension thanks to an old foe.

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    Writer:Matt Wayne
  14. Background image for The Ultimate Enemy (2)
    8.7/10(3 votes)

    #13 - The Ultimate Enemy (2)

    S2:E32

    Vilgax re-emerges in his most powerful form ever! Can Ben stop him and save the universe?

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    Director:Dan Riba
  15. Background image for Map of Infinity
    8.6/10(450 votes)

    #14 - Map of Infinity

    S1:E11

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

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  16. Background image for Absolute Power (2)
    8.6/10(503 votes)

    #15 - Absolute Power (2)

    S1:E20

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

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    Director:Dan Riba
  17. Background image for Absolute Power (1)
    8.5/10(478 votes)

    #16 - Absolute Power (1)

    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.

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  18. Background image for Escape from Aggregor
    8.3/10(454 votes)

    #17 - Escape from Aggregor

    S1:E5

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

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  19. Background image for Ultimate Aggregor
    8.3/10(441 votes)

    #18 - Ultimate Aggregor

    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.

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  20. Background image for The Purge
    8.3/10(3 votes)

    #19 - The Purge

    S2:E13

    Old George, the original Forever Knight, reclaims his position, and orders the Knights to remove all aliens on Earth.

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  21. Background image for Greetings from Techadon
    8.3/10(3 votes)

    #20 - Greetings from Techadon

    S2:E15

    Ben faces Tecadon killer robots that have been programmed to kill him. Each robot is more powerful than the last one. Ben's only chance to survive is for Gwen to find out who commissioned the robots.

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  22. Background image for The Ultimate Sacrifice
    8.3/10(3 votes)

    #21 - The Ultimate Sacrifice

    S2:E19

    Ben's Ultimate transformations have developed their own personalities. Now they want their freedom from Ben.

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  23. Background image for The Beginning of the End
    8.3/10(3 votes)

    #22 - The Beginning of the End

    S2:E30

    The final battle between the Forever Knights and Dagon's Esoterica is in full swing, with Ben caught in the middle!

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  24. Background image for Where the Magic Happens
    8.2/10(465 votes)

    #23 - Where the Magic Happens

    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.

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  25. Background image for Prisoner #775 Is Missing
    8.2/10(426 votes)

    #24 - Prisoner #775 Is Missing

    S2:E12

    After a base is attacked, Max is infuriated when they learn it was a secret alien prison facility. While Max argues with the officer in charge, the team tries to locate an escaped prisoner.

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  26. Background image for Too Hot to Handle
    8.1/10(419 votes)

    #25 - Too Hot to Handle

    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.

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Best Episodes Summary

"Solitary Alignment" is the best rated episode of "Ben 10: Ultimate Alien". It scored 9.3/10 based on 3 votes. Directed by Matt Youngberg and written by Peter David, it aired on 12/9/2011. This episode scored 0.0 points higher than the second highest rated, "The Enemy of My Frenemy".