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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 4 Episode 5 - Secret of the Omnitrix (1)
    6.4/10(851 votes)

    #1 - 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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  2. Ben 10 Season 3 Episode 4 - Merry Christmas
    6.7/10(926 votes)

    #2 - 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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  3. Ben 10 Season 3 Episode 7 - Super Alien Hero Buddy Adventures
    6.7/10(908 votes)

    #3 - Super Alien Hero Buddy Adventures

    S3:E7

    Ben's alien heroes are starring in a silly network cartoon called Super Alien Hero Buddy Adventures and his favorite action hero Kangaroo Commando has been pulled off the air by the same network, so Ben tries to get him back on television and get credit for the alien heroes.

    Director:Scooter Tidwell
    Writer:Marty Isenberg

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  4. Ben 10 Season 1 Episode 6 - Tourist Trap
    6.9/10(1220 votes)

    #4 - 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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  5. Ben 10 Season 1 Episode 12 - Side Effects
    7.0/10(1118 votes)

    #5 - 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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  6. Ben 10 Season 3 Episode 10 - Monster Weather
    7.0/10(867 votes)

    #6 - 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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  7. Ben 10 Season 2 Episode 2 - The Big Tick
    7.1/10(1058 votes)

    #7 - 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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  8. Ben 10 Season 4 Episode 6 - Secret of the Omnitrix (2)
    7.1/10(850 votes)

    #8 - 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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  9. Ben 10 Season 2 Episode 6 - The Galactic Enforcers
    7.2/10(999 votes)

    #9 - 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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  10. Ben 10 Season 2 Episode 10 - They Lurk Below
    7.2/10(964 votes)

    #10 - 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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  11. Ben 10 Season 3 Episode 2 - Midnight Madness
    7.2/10(924 votes)

    #11 - Midnight Madness

    S3:E2

    When Ben is hypnotized, he begins breaking the law while sleepwalking. Once the evil hypnotist called Sublimino discovers the aliens at his disposal, he plots to put hundreds of people under his control forever.

    Director:Scooter Tidwell
    Writer:Marty Isenberg

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  12. Ben 10 Season 1 Episode 2 - Washington B.C.
    7.3/10(1420 votes)

    #12 - 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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  13. Ben 10 Season 1 Episode 3 - The Krakken
    7.3/10(1410 votes)

    #13 - 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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  14. Ben 10 Season 1 Episode 4 - Permanent Retirement
    7.3/10(1342 votes)

    #14 - 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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  15. Ben 10 Season 3 Episode 9 - The Unnaturals
    7.3/10(861 votes)

    #15 - The Unnaturals

    S3:E9

    While attending the Little League World Series to see his home team play, Ben discovers that the opponents are actually robots posing as kids. They also have plans to replace the President with one, as well.

    Director:Scooter Tidwell
    Writer:Marty Isenberg

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  16. Ben 10 Season 1 Episode 11 - A Small Problem
    7.4/10(1123 votes)

    #16 - A Small Problem

    S1:E11

    Ben gets revenge on an amusement-park attendant who said he was too small to go on a ride.

    Director:Scooter Tidwell
    Writer:Unknown

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  17. Ben 10 Season 2 Episode 8 - Ultimate Weapon
    7.4/10(981 votes)

    #17 - Ultimate Weapon

    S2:E8

    In Texas, a group of men discover a mysterious mask belonging to Ah Puch, the Mayan god of death and destruction. The mask is the key to the ultimate weapon in the world, known as the Sword of Ekchuah. However, when Grandpa Max and his grandkids learn that the mask is discovered, he impatiently sets out to obtain the mask, so that it does not fall in the wrong hands. Unfortunately, they find out that Enoch of The Organization is after it as well. The kids worry of how Grandpa Max has become, but with Enoch in the way, will Grandpa Max find the sword before him?

    Director:Scooter Tidwell
    Writer:Jeff Hare

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  18. Ben 10 Season 4 Episode 3 - Don't Drink the Water
    7.4/10(863 votes)

    #18 - 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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  19. Ben 10 Season 1 Episode 8 - The Alliance
    7.5/10(1160 votes)

    #19 - The Alliance

    S1:E8

    Ben clashes with a female gang member who's become part cyborg.

    Director:Scooter Tidwell
    Writer:Unknown

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  20. Ben 10 Season 4 Episode 4 - Big Fat Alien Wedding
    7.5/10(876 votes)

    #20 - Big Fat Alien Wedding

    S4:E4

    Ben, Gwen, and Grandpa Max attend a family wedding. During the ceremony, a strange alien attacks. Will the two ever finish this strange wedding?

    Director:Unknown
    Writer:Unknown

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  21. Ben 10 Season 2 Episode 1 - Truth
    7.6/10(1098 votes)

    #21 - Truth

    S2:E1

    After the battle with Vilgax, Grandpa Max retells his story to Ben about his past. He was with an organization that was not known to exist, referred to as "The Plumbers," a group of people who track down extraterrestrial life. Meanwhile, they meet Phil, an old partner of Grandpa Max. But they soon find out that he steals a device, called the Null Void Projector, to selfishly use it to make money by appearing to capture aliens that he alone released himself.

    Director:Scooter Tidwell
    Writer:Marty Isenberg

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  22. Ben 10 Season 2 Episode 4 - Gwen 10
    7.6/10(1079 votes)

    #22 - Gwen 10

    S2:E4

    In this "how 'bout?" episode, Gwen gets the Omnitrix and the power that comes with it.

    Director:Scooter Tidwell
    Writer:Greg Klein

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  23. Ben 10 Season 2 Episode 7 - Camp Fear
    7.6/10(1017 votes)

    #23 - Camp Fear

    S2:E7

    When Ben and Gwen argue over a birthday party to occur in the next few months, Grandpa Max is distracted by their quarreling and almost hits a young boy camper. To ensure the boy's life, they head to Camp Opinicon, only to find no people around. As they investigate the premises, they find twins, whom were also hiding from something that may have a connection to the lifeless camp. Grandpa Max readies to leave the area with the children, only to find that the RV's engine is clogged with a mysterious fungus. While the kids take in shelter in a nearby cabin, Grandpa Max is captured. Now Ben must come to the rescue to discover a new alien form, as well as a way to destroy the evil alien Myceloid Monsters and their Fungal Master, and learn the benefits of what sharing can do.

    Director:Sebastian Montes
    Writer:Marty Isenberg

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  24. Ben 10 Season 2 Episode 12 - Dr. Animo and the Mutant Ray
    7.6/10(971 votes)

    #24 - Dr. Animo and the Mutant Ray

    S2:E12

    The Tennysons arrive at a swamp, where a festivities of Gatorfest start first thing the next day. Gwen finds Ben playing around with the Omnitrix, and she warns him that it may create unusual problems. Without heeding Max and Gwen's warning, he pops the face out, and the Omnitrix acts up. Right away, something was wrong, though it was gone unnoticed, at least, until the next day. Gator-fest was going along well, but the giant frog of Dr. Animo comes in to disrupt it. Dr. Animo has returned, and he wants to take revenge on Ben. But when Ben goes alien, he transforms into a hybrid alien with unbalanced attributes. Will Ben ever learn his lesson in listening for a change?

    Director:Scooter Tidwell
    Writer:Duncan Rouleau

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  25. Ben 10 Season 4 Episode 2 - Divided We Stand
    7.6/10(885 votes)

    #25 - Divided We Stand

    S4:E2

    Ben gains another Omnitrix hero to use, which he calls Ditto. Gwen can't stand being around the multiplying Dittos, and they end up giving her headaches. The Dittos, though, prove to be real helpful against Dr. Animo and his multiplying Stinkflies after he extracted some of Ditto's DNA.

    Director:Unknown
    Writer:Marty Isenberg

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Worst Episodes Summary

"Secret of the Omnitrix (1)" is the worst rated episode of "Ben 10". It scored 6.4/10 based on 851 votes. Directed by Unknown and written by Unknown, it aired on 8/4/2007. This episode scored 0.3 points lower than the second lowest rated, "Merry Christmas".