Ben 10: Alien Force

Five years later, 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. In order to save his Grandpa, Ben must defeat the evil DNAliens, a powerful alien race intent on destroying the galaxy, starting with planet Earth.

AnimationSci-Fi & FantasyAction & Adventure

Seasons

1. Ben 10 Returns (1)

Air Date: 2008-04-18

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.

2. Ben 10 Returns (2)

Air Date: 2008-04-18

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.

3. Everybody Talks About the Weather

Air Date: 2008-04-26

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.

4. Kevin's Big Score

Air Date: 2008-05-03

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

5. All that Glitters

Air Date: 2008-05-10

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

6. Max Out

Air Date: 2008-05-17

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

7. Pier Pressure

Air Date: 2008-05-31

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

8. What Are Little Girls Made Of?

Air Date: 2008-06-07

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.

9. The Gauntlet

Air Date: 2008-06-14

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.

10. Paradox

Air Date: 2008-07-05

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.

11. Be-Knighted

Air Date: 2008-07-12

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

12. Plumber's Helpers

Air Date: 2008-07-19

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

13. X = Ben + 2

Air Date: 2008-08-31

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.

1. Darkstar Rising

Air Date: 2008-10-10

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

2. Alone Together

Air Date: 2008-10-17

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.

3. Good Copy, Bad Copy

Air Date: 2008-10-24

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

4. Save The Last Dance

Air Date: 2008-11-07

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

5. Undercover

Air Date: 2008-11-14

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

6. Pet Project

Air Date: 2008-11-21

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.

7. Grounded

Air Date: 2008-11-23

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.

8. Voided

Air Date: 2008-12-05

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

9. Inside Man

Air Date: 2008-12-12

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

10. Birds of a Feather

Air Date: 2009-03-24

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

11. Unearthed

Air Date: 2009-03-25

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

12. War of the Worlds (1)

Air Date: 2009-03-27

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

13. War of the Worlds (2)

Air Date: 2009-03-27

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

1. Vengeance of Vilgax (1)

Air Date: 2009-09-11

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

2. Vengeance of Vilgax (2)

Air Date: 2009-09-11

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.

3. Inferno

Air Date: 2009-09-18

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.

4. Fool's Gold

Air Date: 2009-09-25

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.

5. Simple

Air Date: 2009-10-09

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

6. Vreedle, Vreedle

Air Date: 2009-10-16

Ship's owner decides he wants him back and hires some repo men to retrieve him. Ben and Kevin go to court to take care of things legally, leaving Gwen and Julie to face the repo men.

7. Single Handed

Air Date: 2009-10-23

A bounty hunter tries to remove the Omnitrix from Ben.

8. If All Else Fails

Air Date: 2009-11-06

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.

9. In Charm's Way

Air Date: 2009-11-13

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.

10. Ghost Town

Air Date: 2009-11-20

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.

11. Trade-Off!

Air Date: 2009-12-04

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

12. Busy Box

Air Date: 2009-12-11

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.

13. Con of Rath

Air Date: 2010-01-08

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.

14. Primus

Air Date: 2010-01-15

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.

15. Time Heals

Air Date: 2010-01-22

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.

16. The Secret of Chromastone

Air Date: 2010-01-29

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

17. Above and Beyond

Air Date: 2010-03-12

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.

18. Vendetta

Air Date: 2010-03-19

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.

19. The Final Battle (1)

Air Date: 2010-03-26

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.

20. The Final Battle (2)