All Seasons

Season 1

  • S01E01 Ben 10 Returns (1)

    • April 18, 2008
    • Cartoon Network

    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.

  • S01E02 Ben 10 Returns (2)

    • April 18, 2008
    • Cartoon Network

    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.

  • S01E03 Everybody Talks About the Weather

    • April 26, 2008
    • Cartoon Network

    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.

  • S01E04 Kevin's Big Score

    • May 3, 2008
    • Cartoon Network

    Kevin shatters Ben and Gwen's trust when he steals the Rust Bucket to sell for alien technology on the black market.

  • S01E05 All That Glitters

    • May 10, 2008
    • Cartoon Network

    Grandpa Max leaves Ben a series of instructions to contact a team of heroes. Things go the wrong direction when they soon find them.

  • S01E06 Pier Pressure

    • May 31, 2008
    • Cartoon Network

    While Ben has a date with Julie, it is soon ruined when an alien named Ship makes trouble at the local fair.

  • S01E07 Max Out

    • May 17, 2008
    • Cartoon Network

    Gwen's older brother, Ken, is suddenly missing. As they look, they encounter a surprise leading to a shocking secret from the DNAliens.

  • S01E08 Be-Knighted

    • July 12, 2008
    • Cartoon Network

    The Forever Knights secure a weapon in hopes of aiding them slay a dragon they have held captive.

  • S01E09 What Are Little Girls Made Of?

    • June 7, 2008
    • Cartoon Network

    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.

  • S01E10 The Gauntlet

    • June 14, 2008
    • Cartoon Network

    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.

  • S01E11 Plumbers' Helpers

    • July 19, 2008
    • Cartoon Network

    Freelance young Plumbers mistake Ben and his team as a threat.

  • S01E12 Paradox

    • July 5, 2008
    • Cartoon Network

    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.

  • S01E13 X = Ben + 2

    • August 31, 2008
    • Cartoon Network

    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.

Season 2

  • S02E01 Alone Together

    • October 17, 2008
    • Cartoon Network

    During a battle Ben and an alien commander are teleported to a distant world. They must put their differences aside if they're going to have any chance of finding a way to return to Earth.

  • S02E02 Darkstar Rising

    • October 10, 2008
    • Cartoon Network

    A new villain comes into town, his name is Darkstar, he commits some crimes and gets the team's attention fast

  • S02E03 Good Copy, Bad Copy

    • October 24, 2008
    • Cartoon Network

    An alien impersonates Ben with hopes of using his Omnitrix to annihilate him.

  • S02E04 Save the Last Dance

    • November 7, 2008
    • Cartoon Network

    Kevin asks Gwen to the school dance; Ben fears he's losing control of the Omnitrix.

  • S02E05 Undercover

    • November 14, 2008
    • Cartoon Network

    Cooper is kidnapped by the DNAliens, who want him to build a mystery arch.

  • S02E06 Birds of a Feather

    • March 24, 2009
    • Cartoon Network

    The gang helps the prince of the arachna-chimps regain power

  • S02E07 Grounded

    • November 23, 2008
    • Cartoon Network

    When Ben's parents discover his ability to turn into aliens, they forbid him from using the Omnitrix and later ground him from using it again. Eventually Gwen is grounded too leaving Kevin to stop the DNAliens.

  • S02E08 Pet Project

    • November 21, 2008
    • Cartoon Network

    To find and destroy the alien dragon species, the Forever Knights capture Ship to control a starship they built out of alien technology to locate their homeworld and destroy them.

  • S02E09 Unearthed

    • March 25, 2009
    • Cartoon Network

    Ben cares for a baby monster and helps locate its parents before the DNAliens find it.

  • S02E10 Voided

    • December 5, 2008
    • Cartoon Network

    After Gwen receives an S.O.S. from Helen, Ben must go into the Null Void to save her and Manny. Once there, he must find The Wrench in order to stop D'Void, who happens to be Ben's old enemy Dr. Animo

  • S02E11 Inside Man

    • December 12, 2008
    • Cartoon Network

    Ben and the gang rescue a runaway prisoner of the DNAliens.

  • S02E12 War of the Worlds (1)

    • March 27, 2009
    • Cartoon Network

    Ben, Gwen and Kevin gather their allies to counter the threat of the incoming Highbreed fleet. Azmuth reveals a secret about the Omnitrix.

  • S02E13 War of the Worlds (2)

    • March 27, 2009
    • Cartoon Network

    Ben goes to the HighBreeds' world in an attempt to stop their attack on Earth.

Season 3

  • S03E01 Vengeance of Vilgax (1)

    • September 11, 2009
    • Cartoon Network

    Vilgax, after conquering 10 planets, comes to Earth to destroy Ben.

  • S03E02 Vengeance of Vilgax (2)

    • September 11, 2009
    • Cartoon Network

    Ben, Gwen and Kevin race to collect the Omnitrix's missing forms and make it to the battle with Vilgax on time. Meanwhile, Kevin discovers that his new transformation has some benefits.

  • S03E03 Inferno

    • September 18, 2009
    • Cartoon Network

    Ben, Gwen and Kevin discover that Vulkanus is planning to drill the center of the Earth and drop a bomb into the hole. Destroying the planet.

  • S03E04 Vreedle, Vreedle

    • October 16, 2009
    • Cartoon Network

    Repo men are hired to return Ship to his parent.

  • S03E05 Simple

    • October 9, 2009
    • Cartoon Network

    An alien named Probity seeks help from Ben to stop the on-going war on her home planet.

  • S03E06 Fool's Gold

    • September 25, 2009
    • Cartoon Network

    A species of goat-like aliens comes to Earth for a popcorn festival. Ben, Gwen, and Kevin have a big problem when one of the aliens eats meat and turns into a monster.

  • S03E07 Singlehanded

    • October 23, 2009
    • Cartoon Network

    A bounty hunter tries to remove the Omnitrix from Ben.

  • S03E08 If All Else Fails

    • November 6, 2009
    • Cartoon Network

    A series of earthquakes awakens a HighBreed officer who has been hibernating deep under the earth’s surface. He believes the HighBreed have lost the war and activates a fail safe device that is programmed to destroy. Ben must now work together with Gwen and Kevin not only to save Grandpa Max, but also the world from this "giant" problem.

  • S03E09 In Charm's Way

    • November 13, 2009
    • Cartoon Network

    Kevin is beginning to lose all hope that he will someday return to his human self. He then meets a girl who doesn't seem to mind the form he is in. Kevin finds himself under her spell, quite literally, as Charmcaster has come back to exact revenge on Ben and Gwen. Kevin, under Charmcaster's spell, has no choice but to obey his master and destroy Ben and Gwen.

  • S03E10 Trade Off

    • December 4, 2009
    • Cartoon Network

    Kevin makes a temporary truce with Darkstar to retrieve an artifact that will return them into their former selves.

  • S03E11 Ghost Town

    • November 20, 2009
    • Cartoon Network

    Vilgax promises Ghostfreak to spring him out of prison as long as he tells him the secrets of the Omnitrix, but when Ghostfreak betrays him and turns his people into his minions, Vilgax comes to Earth and asks for Ben, Gwen and Kevin's help to get rid of Ghostfreak.

  • S03E12 Busy Box

    • December 11, 2009
    • Cartoon Network

    Ben, Kevin and Gwen come across an alien box that can forms into a robotic version of whatever it sees. It power becomes a liability when the Vreedle brothers decide to take the box for themselves.

  • S03E13 Con of Rath

    • January 8, 2010
    • Cartoon Network

    Zaw-Veenull asks Ben to deliver Prince Tiffin to Jarret in order to keep peace between the two species. Shortly, after their trip in space, the Omnitrix malfunctions and turns Ben into an Appoplexian named Rath who wants to fight anything that breathes.

  • S03E14 Primus

    • January 15, 2010
    • Cartoon Network

    The Omnitrix transports Ben, Gwen, and Kevin to a planet called Primus, which turns out to have been created by Azmuth. They must stop Vilgax from stopping the Omnitrix at its source.

  • S03E15 Above and Beyond

    • March 12, 2010
    • Cartoon Network

    The Plumber's Helpers are called upon by Grandpa Max to rescue him from an abandoned space station where he's being attacked by Ben! The team must now find a way to work together as they try to save Max, stop Ben, and keep the space station from crashing to Earth.

  • S03E16 The Secret of Chromastone

    • January 29, 2010
    • Cartoon Network

    While sick, Ben is visited by old friend Tetrax, who demands that Ben hand over Chromastone.

  • S03E17 Vendetta

    • March 19, 2010
    • Cartoon Network

    Kevin returns home to find his house ransacked, so he enlists Ben and Gwen's help to find out who did it and why. They soon cross paths with Ragnarok, a deadly criminal who recently broke free from the Null Void and is in search of a special key. Kevin is intent on stopping Ragnarok from obtaining the special key, especially after he learns the truth about Ragnarok and his father.

  • S03E18 Time Heals

    • January 22, 2010
    • Cartoon Network

    Despite being warned by Paradox, Gwen travels back in time to prevent the accident that turned Kevin into a monster from ever happening. Gwen returns to the present only to find that her time traveling caused a series of events that led to Hex ruling the world.

  • S03E19 The Final Battle (1)

    • March 26, 2010
    • Cartoon Network

    Albedo has stolen the Ultimatrix from Azmuth and has used it to kidnap Gwen and Kevin. Ben goes to face Albedo and rescue his friends when he quickly discovers that Albedo has been working in conjunction with Vilgax. Ben is defeated by the pair and gives up the Omnitrix to save himself and his friends.

  • S03E20 The Final Battle (2)

    • March 26, 2010
    • Cartoon Network

    Powerless, Ben goes aboard Vilgax's ship and faces off with Vilgax to stop his invasion of Earth in their final battle. Albedo gives Ben the Ultimatrix and Ben gets his old aliens and their evolved forms.