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The Worst Episodes of Ben 10

Every episode of Ben 10 ranked from worst to best. Explore the Worst Episodes of Ben 10!

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When 10-year-old Ben Tennyson discovers a mysterious device, he gains the power to change into ten different alien heroes, each with uniquely awesome powers. With such abilities at his disposal, Ben realizes a greater responsibility

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Episode Rankings

  1. #1 Worst Episode
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    Ben 10 Season 3 Episode 4 - Merry Christmas
    5.5/10(6 votes)

    #1 - Merry Christmas

    S3:E4

    Ben, Grandpa Max, and Gwen come upon a bizarre Christmas theme park run by an evil entity who thinks Grandpa Max is Santa Claus and proceeds to trap him.

    Director:Unknown
    Writer:Duncan Rouleau

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  2. Ben 10 Season 4 Episode 1 - Perfect Day
    5.7/10(9 votes)

    #2 - Perfect Day

    S4:E1

    Enoch and the Forever Knights return, putting Ben in a dream world where he's tricked into having the perfect day. However, his dream quickly turns into a nightmare.

    Director:Scooter Tidwell
    Writer:Michael Jelenic

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  3. Ben 10 Season 4 Episode 5 - Secret of the Omnitrix (1)
    6.0/10(4 votes)

    #3 - Secret of the Omnitrix (1)

    S4:E5

    During a battle with Dr. Animo, the Omnitrix is accidentally set to self-destruct. In order to stop it, Ben, Gwen, and Tetrax travel across spaceto track down the Omnitrix's creator, Azmuth.

    Director:Unknown
    Writer:Unknown

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  4. Ben 10 Season 3 Episode 6 - Game Over
    6.2/10(6 votes)

    #4 - Game Over

    S3:E6

    The Tennysons stay in as it rains outside, and Ben plays a video game to pass the time by. When Gwen decides to join in, Ben is jealous of how she's a far superior player. Instead, Ben decides to transform to Upgrade, and merges with the game console. Gwen makes an attempt at shaking him off, but suddenly, a lightning strike causes them to transfer into the video game itself. The only way Ben can use the Omnitrix is to find coins with the different aliens on it. To get out, they must find the Upgrade coin before an evil being uses it to escape into the real world.

    Director:Scooter Tidwell
    Writer:Marty Isenberg

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  5. Ben 10 Season 3 Episode 12 - Be Afraid of the Dark
    6.2/10(6 votes)

    #5 - Be Afraid of the Dark

    S3:E12

    Ghostfreak's return spells disaster for our heroes. Grandpa Max and Gwen must deal with the mummy alien in space while Ben deals with Ghostfreak and Dr. Vicktor on Earth. Ghostfreak then reveals his master plan: he plans to blanket the Earth with Coronium so that sunlight will not reach the planet so that he may rule. With the power of a new alien in the watch, can Ben stop Ghostfreak, and save Grandpa and Gwen?

    Director:Unknown
    Writer:Marty Isenberg

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  6. Ben 10 Season 4 Episode 6 - Secret of the Omnitrix (2)
    6.2/10(4 votes)

    #6 - Secret of the Omnitrix (2)

    S4:E6

    During a battle with Dr. Animo, the Omnitrix is accidentally set to self-destruct. In order to stop it, Ben, Gwen, and Tetrax travel across spaceto track down the Omnitrix's creator, Azmuth.

    Director:Unknown
    Writer:Unknown

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  7. Ben 10 Season 4 Episode 7 - Secret of the Omnitrix (3)
    6.2/10(4 votes)

    #7 - Secret of the Omnitrix (3)

    S4:E7

    During a battle with Dr. Animo, the Omnitrix is accidentally set to self-destruct. In order to stop it, Ben, Gwen, and Tetrax travel across spaceto track down the Omnitrix's creator, Azmuth.

    Director:Unknown
    Writer:Unknown

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  8. Ben 10 Season 4 Episode 11 - Ben 10 vs. Negative 10 (1)
    6.2/10(5 votes)

    #8 - Ben 10 vs. Negative 10 (1)

    S4:E11

    Ben, Gwen, Cooper and Grandpa Max face their last battle ever against the villains they have encountered and they will battle to get the world's most powerful energy source.

    Director:Scooter Tidwell
    Writers:Tom Pugsley, Greg Klein

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  9. Ben 10 Season 1 Episode 3 - The Krakken
    6.3/10(12 votes)

    #9 - The Krakken

    S1:E3

    Ben has his hands full with a giant sea monster and an evil poacher.

    Director:Scooter Tidwell
    Writers:Joe Kelly, Steven T. Seagle

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  10. Ben 10 Season 2 Episode 6 - The Galactic Enforcers
    6.3/10(9 votes)

    #10 - The Galactic Enforcers

    S2:E6

    At a museum, Ben sits and reads a comic, daydreaming about himself as a super hero. As Gwen interrupts him, she is not happy how Ben treats the artwork. His day has been a bore, but when an alien vessel arrives, an alien named Volcanus and the bounty hunter Sixsix come to pursue the Biocenthium alloy to complete a mixture with Element X to create a bomb, strong enough to destroy a whole solar system. Suddenly, Ben meets The Galactic Enforcers, a group of three who serve in protecting the galaxy under the conduct code. Ben is intrigued by their heroic appearance, but are they really something to be looking up to?

    Director:Scooter Tidwell
    Writer:Joe Kelly

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  11. Ben 10 Season 2 Episode 10 - They Lurk Below
    6.3/10(7 votes)

    #11 - They Lurk Below

    S2:E10

    Our heroes ride a jet belonging to Grandpa Max's old Friend, Donovan Grand Smith, who owns an underwater resort. At the entrance, they receive a warm welcome from Donovan himself, though they also meet with his grandson, Edwin, who didn't seem to be excited about their guests. Later, when Edwin, Ben, and Gwen enter the Undersea Manta Ray, a giant submarine, they encounter strange aliens that threatened to destroy the whole resort. While the kids find a way to cooperate with each other to find the source that lures them in, Donovan himself learns a few lessons in how to bond better with his grandson.

    Director:Sebastian Montes
    Writers:Tom Pugsley, Greg Klein

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  12. Ben 10 Season 3 Episode 10 - Monster Weather
    6.3/10(6 votes)

    #12 - Monster Weather

    S3:E10

    Grandpa Max takes the kids to Chicago to see one of his favorite band, Shag Carpeting. The kids meet a weather reporter who forecasts the weather with a robot named S.A.M. He uses the robot to create rain, but a giant creature forms! Ben quickly takes care of it. The reporter tries to destroy S.A.M., but he convinces him not to. S.A.M. then goes into the sky and begins to cause chaos. The reporter tries to stop it again, but he is no longer in control. Can Ben destroy the robot and save a city from disaster?

    Director:Unknown
    Writer:Unknown

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  13. Ben 10 Season 4 Episode 8 - Ben 4 Good Buddy
    6.3/10(7 votes)

    #13 - Ben 4 Good Buddy

    S4:E8

    While on a desert highway, the RV gets stolen by a group of modern-day pirates, who use it to go on a robbery.

    Director:Scooter Tidwell
    Writer:Amy Wolfram

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  14. Ben 10 Season 4 Episode 9 - Ready to Rumble
    6.3/10(6 votes)

    #14 - Ready to Rumble

    S4:E9

    When Ben accidentally breaks Gwen's laptop, he participates in the "Ultimate Wrestling Competition" as Four Arms to get the prize money for a new laptop to replace Gwen's broken one.

    Director:Scooter Tidwell
    Writer:Unknown

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  15. Ben 10 Season 1 Episode 2 - Washington B.C.
    6.4/10(13 votes)

    #15 - Washington B.C.

    S1:E2

    Ben must fight Dr. Animo, a crazed scientist who has a DNA-altering device.

    Director:Alex Soto
    Writers:Tom Pugsley, Greg Klein

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  16. Ben 10 Season 1 Episode 9 - Last Laugh
    6.4/10(8 votes)

    #16 - Last Laugh

    S1:E9

    Ben discovers an evil circus that's headed by a psychic vampire clown named Zombozo.

    Director:Scooter Tidwell
    Writers:Joe Casey, Duncan Rouleau

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  17. Ben 10 Season 4 Episode 12 - Ben 10 vs. Negative 10 (2)
    6.4/10(5 votes)

    #17 - Ben 10 vs. Negative 10 (2)

    S4:E12

    The Forever King sets his plan in motion and recruits the most powerful enemies Ben has ever faced in order to steal the world's most powerful energy source.

    Director:Unknown
    Writer:Unknown

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  18. Ben 10 Season 1 Episode 6 - Tourist Trap
    6.5/10(10 votes)

    #18 - Tourist Trap

    S1:E6

    Ben accidentally releases creatures made of electric energy and must use his own powers to recapture them.

    Director:Scooter Tidwell
    Writers:Joe Kelly, Steven T. Seagle

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  19. Ben 10 Season 3 Episode 13 - The Visitor
    6.5/10(6 votes)

    #19 - The Visitor

    S3:E13

    While snowmobiling, two guys accidentally release an alien named Xylene from a strange container. At a park, Ben (as Wildmutt) steals Gwen's kite, so she casts a spell to make dogs attracted to him. Grandpa Max seems sad to be in St. Louis since it is where he met his wife. Xylene attacks, and Grandpa Max comes to defend, only to recognize her. Xylene reveals that she came to find the Omnitrix since she lost it when Vilgax attacked her ship. While Grandpa Max and Xylene talk about the past, a robot emerges from the area where Xylene was and attacks Ben and Gwen. The mechadroid attacks twice, taking Grandpa Max with him. Now Ben must work with Xylene (to his dismay) to save Grandpa Max.

    Director:Unknown
    Writers:Tom Pugsley, Greg Klein

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  20. Ben 10 Season 4 Episode 3 - Don't Drink the Water
    6.5/10(6 votes)

    #20 - Don't Drink the Water

    S4:E3

    After being in contact with water from the Fountain of Youth, Grandpa Max and Ben are reverted to being kids again. Now, Gwen is left to take care of them while stopping Hex from finding the fountain's source.

    Director:Scooter Tidwell
    Writers:Tom Pugsley, Greg Klein, Marty Isenberg

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  21. Ben 10 Season 1 Episode 4 - Permanent Retirement
    6.6/10(8 votes)

    #21 - Permanent Retirement

    S1:E4

    Ben must rescue his aunt and grandfather when they are held hostage by shape-shifting aliens.

    Director:Scooter Tidwell
    Writer:Marsha Griffin

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  22. Ben 10 Season 1 Episode 12 - Side Effects
    6.6/10(8 votes)

    #22 - Side Effects

    S1:E12

    Ben's summer cold causes strange physical changes in his alien personas.

    Director:Scooter Tidwell
    Writer:Greg Klein

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  23. Ben 10 Season 3 Episode 3 - A Change of Face
    6.6/10(5 votes)

    #23 - A Change of Face

    S3:E3

    Dressed as Pilgrims, to honor their history, while in the streets of Salem, MA, Ben, Gwen, and Grandpa Max witness an explosion of a nearby building. But when Ben rushes to the rescue, Charmcaster is there waiting with a spell to take over Ben's body and the Omnitrix. Only things go awry and Gwen and Charmcaster switch bodies. Gwen goes to prison and the sorceress is brewing a plan to gain the Omnitrix. Now Gwen must find the way to get out of prison, alert her family against Charmcaster, and get her own body back using every trick up her sleeve... or Charmcaster's.

    Director:Scooter Tidwell
    Writer:Unknown

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  24. Ben 10 Season 1 Episode 10 - Lucky Girl
    6.7/10(7 votes)

    #24 - Lucky Girl

    S1:E10

    Ben battles a sorcerer who possesses a number of charms, and Gwen suddenly becomes a superhero when one of the charms falls into her hands.

    Director:Scooter Tidwell
    Writer:Marsha Griffin

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  25. Ben 10 Season 2 Episode 2 - The Big Tick
    6.7/10(9 votes)

    #25 - The Big Tick

    S2:E2

    At Yellowstone Park, Ben and Gwen inadvertently discover a new form on the Omnitrix: Cannon Bolt, an armadillo-like alien that Ben isn't too fond of. Soon after, a meteor comes crashing down to the park, containing a planet-devouring, tick-like alien. On top of that, three other aliens arrive with it, and worship it as their savior, the "Great One." Powerless to stop the planet-eater with his regular forms, Ben must rely on a new form he knows nothing about.

    Director:Unknown
    Writer:Unknown

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Worst Episodes Summary

"Merry Christmas" is the worst rated episode of "Ben 10". It scored 5.5/10 based on 6 votes. Directed by Unknown and written by Duncan Rouleau, it aired on 12/11/2006. This episode scored 0.2 points lower than the second lowest rated, "Perfect Day".