15-year-old Ben Tennyson chooses to once again put on the Omnitrix and discovers that it has recalibrated and can now transform him into 10 brand-new aliens. Joined by his super-powered cousin Gwen Tennyson and his equally powerful former enemy Kevin Levin, Ben is on a mission to find his missing Grandpa Max.
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see all options Availability data: JustWatch
- Seasons
- 3
- Episodes aired
- 46
- Latest aired
- S03E19
- Total runtime
- 17h 38min
Timeline when each season aired
- Season 1 April 2008 – August 2008 13 episodes
- Season 2 October 2008 – March 2009 13 episodes
- Season 3 September 2009 – March 2010 20 episodes
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S01E01 Ben 10 Returns (1)
April 18 · 23min find the promo
Show synopsis
Ben discovers that the Forever Knights are trading weapons with the DNAliens, while at the same time, Grandpa Max has mysteriously gone missing. He decides to return the Omnitrix on his wrist and go hero once again.
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S01E02 Ben 10 Returns (2)
April 18 · 23min find the promo
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Ben, Gwen, and Kevin follow a lead that takes them to a secret base in the desert. There they hope to find Grandpa Max but instead find a Highbreed spaceship with a giant cannon.
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S01E03 Everybody Talks About the Weather
April 26 · 23min find the promo
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Gwen discovers that Grandpa Max's badge is able to signal other Plumbers. However, by using it, they meet up with a familiar face, a pyronite.
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S01E04 Kevin's Big Score
May 3 · 23min find the promo
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Kevin shatters Ben and Gwen's trust when he steals the Rust Bucket to sell for alien technology on the black market.
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S01E05 All that Glitters
May 10 · 23min find the promo
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Grandpa Max leaves Ben a series of instructions to contact a team of heroes. Things go the wrong direction when they soon find them.
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S01E06 Max Out
May 17 · 23min find the promo
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Gwen's older brother, Ken, is suddenly missing. As they look, they encounter a surprise leading to a shocking secret from the DNAliens.
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S01E07 Pier Pressure
May 31 · 23min find the promo
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While Ben has a date with Julie, it is soon ruined when an alien named Ship makes trouble at the local fair.
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S01E08 What Are Little Girls Made Of?
June 7 · 23min find the promo
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When Ben and Gwen learn that their grandmother Verdona is an alien being, Verdona insists that Gwen should come along with her to her home planet and improve her abilities. With this, Gwen is faced with a difficult decision between a human and alien life.
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S01E09 The Gauntlet
June 14 · 23min find the promo
Show synopsis
When Ben stands up to Cash and JT, they soon discover a robotic gauntlet from Kevin's vehicle. With it, Cash decides to get back on Ben, although this time, it's more than just a joke.
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S01E10 Paradox
July 5 · 23min find the promo
Show synopsis
A time experiment in the 1950s sends a bizarre monster to Ben's time. Now Ben, Gwen, and Kevin must team up with Paradox, a time traveling hero, to face off against the unstoppable creature.
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S01E11 Be-Knighted
July 12 · 23min find the promo
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The Forever Knights secure a weapon in hopes of aiding them slay a dragon they have held captive.
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S01E12 Plumber's Helpers
July 19 · 23min find the promo
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Freelance young Plumbers mistake Ben and his team as a threat.
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S01E13 X = Ben + 2
August 31 · 23min find the promo
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An alien emperor plans to destroy the planet Earth for kidnapping his daughter. In order to save the planet, Ben must uncover the secrets of Alien X.