AnimationAction & AdventureSci-Fi & Fantasy2010–2012Cartoon Network

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!

Best episode
S1E16 The Forge of Creation
9.31,239 votes
Worst episode
S1E12 Reflected Glory
6.5591 votes
Top season
Season 2
8.1avg
Binge time
19h 56m
52 episodes
BestEpisodes
WorstEpisodes
BestSeasons
AllEpisodes

Seasons2

All12

Episode Rankings

  1. #1 Fan Favorite
    Click to reveal
    Ben 10: Ultimate Alien Season 1 Episode 16 - The Forge of Creation
    9.3/10(1239 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

    Be the first to start the conversation for this episode

  2. Ben 10: Ultimate Alien Season 2 Episode 9 - It's Not Easy Being Gwen
    9.0/10(1152 votes)

    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.

    Director:Matt Youngberg
    Writers:Joe Casey, Joe Kelly

    Be the first to start the conversation for this episode

  3. Ben 10: Ultimate Alien Season 1 Episode 15 - Perplexhahedron
    8.8/10(916 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

    Be the first to start the conversation for this episode

  4. Ben 10: Ultimate Alien Season 2 Episode 10 - Ben 10,000 Returns
    8.8/10(788 votes)

    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.

    Director:Matt Youngberg
    Writers:Joe Casey, Joe Kelly

    Be the first to start the conversation for this episode

  5. Ben 10: Ultimate Alien Season 1 Episode 20 - Absolute Power (2)
    8.8/10(778 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

    Be the first to start the conversation for this episode

  6. Ben 10: Ultimate Alien Season 1 Episode 19 - Absolute Power (1)
    8.7/10(737 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

    Be the first to start the conversation for this episode

    7. Trending NowTRENDING NOW

    The 20 WORST Episodes of Ben 10: Ultimate Alien

    READ
  7. Ben 10: Ultimate Alien Season 1 Episode 11 - Map of Infinity
    8.7/10(682 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

    Be the first to start the conversation for this episode

  8. Ben 10: Ultimate Alien Season 1 Episode 5 - Escape from Aggregor
    8.4/10(666 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

    Be the first to start the conversation for this episode

  9. Ben 10: Ultimate Alien Season 1 Episode 10 - Ultimate Aggregor
    8.4/10(648 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

    Be the first to start the conversation for this episode

  10. Ben 10: Ultimate Alien Season 1 Episode 14 - Where the Magic Happens
    8.3/10(661 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

    Be the first to start the conversation for this episode

  11. Ben 10: Ultimate Alien Season 2 Episode 12 - Prisoner #775 Is Missing
    8.3/10(608 votes)

    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.

    Director:Dan Riba
    Writers:Peter David, Joe Casey, Joe Kelly

    Be the first to start the conversation for this episode

  12. Ben 10: Ultimate Alien Season 1 Episode 8 - Fused
    8.2/10(619 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

    Be the first to start the conversation for this episode

  13. Ben 10: Ultimate Alien Season 2 Episode 25 - The Enemy of My Frenemy
    9.4/10(5 votes)

    S2:E25

    Gwen and co revisit Legerdomain in hopes of rescuing Charmcaster.

    Director:Matt Youngberg
    Writers:David McDermott, Brian Swenlin

    Be the first to start the conversation for this episode

  14. Ben 10: Ultimate Alien Season 2 Episode 26 - Couples Retreat
    9.4/10(5 votes)

    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.

    Director:Dan Riba
    Writer:Geoffrey Thorne

    Be the first to start the conversation for this episode

  15. Ben 10: Ultimate Alien Season 2 Episode 27 - Catch a Falling Star
    9.0/10(6 votes)

    S2:E27

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

    Director:Butch Lukic
    Writer:Len Uhley

    Be the first to start the conversation for this episode

  16. Ben 10: Ultimate Alien Season 1 Episode 6 - Too Hot to Handle
    8.1/10(623 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

    Be the first to start the conversation for this episode

  17. Ben 10: Ultimate Alien Season 2 Episode 23 - Solitary Alignment
    8.8/10(6 votes)

    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.

    Director:Matt Youngberg
    Writer:Peter David

    Be the first to start the conversation for this episode

  18. Ben 10: Ultimate Alien Season 2 Episode 17 - Double or Nothing
    8.7/10(6 votes)

    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.

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

    Be the first to start the conversation for this episode

  19. Ben 10: Ultimate Alien Season 2 Episode 24 - Inspector #13
    8.7/10(6 votes)

    S2:E24

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

    Director:Butch Lukic
    Writer:Geoffrey Thorne

    Be the first to start the conversation for this episode

  20. Ben 10: Ultimate Alien Season 2 Episode 16 - The Flame Keeper's Circle
    8.5/10(6 votes)

    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.

    Director:Dan Riba
    Writers:Joe Casey, Joe Kelly

    Be the first to start the conversation for this episode

  21. Ben 10: Ultimate Alien Season 2 Episode 19 - The Ultimate Sacrifice
    8.5/10(6 votes)

    S2:E19

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

    Director:Butch Lukic
    Writers:Joe Casey, Joe Kelly, J. M. DeMatteis

    Be the first to start the conversation for this episode

  22. Ben 10: Ultimate Alien Season 2 Episode 31 - The Ultimate Enemy (1)
    8.5/10(6 votes)

    S2:E31

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

    Director:Matt Youngberg
    Writer:Matt Wayne

    Be the first to start the conversation for this episode

  23. Ben 10: Ultimate Alien Season 2 Episode 32 - The Ultimate Enemy (2)
    8.5/10(6 votes)

    S2:E32

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

    Director:Dan Riba
    Writer:Dwayne McDuffie

    Be the first to start the conversation for this episode

  24. Ben 10: Ultimate Alien Season 2 Episode 13 - The Purge
    8.3/10(6 votes)

    S2:E13

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

    Director:Butch Lukic
    Writers:Joe Casey, Joe Kelly

    Be the first to start the conversation for this episode

  25. Ben 10: Ultimate Alien Season 2 Episode 15 - Greetings from Techadon
    8.3/10(6 votes)

    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.

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

    Be the first to start the conversation for this episode

Best Episodes Summary

"The Forge of Creation" is the best rated episode of Ben 10: Ultimate Alien. It scored 9.3/10 from 1,239 votes. Directed by Dan Riba and written by Joe Casey, Joe Kelly, it aired on November 12, 2010. This episode scored 0.3 points higher than the second highest rated, "It's Not Easy Being Gwen".

Keep going

Browse Ben 10: Ultimate Alien by season

If you like Ben 10: Ultimate Alien