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.
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Best Episodes of Ben 10: Alien Force
The Final Battle (1)
S3 Ep19
8.1
26th Mar 2010
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.
Con of Rath
S3 Ep13
8.0
8th Jan 2010
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.
What Are Little Girls Made Of?
S1 Ep8
8.0
7th Jun 2008
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.
Birds of a Feather
S2 Ep10
8.0
24th Mar 2009
The gang helps the prince of the arachna-chimps regain power
Time Heals
S3 Ep15
7.9
22nd Jan 2010
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.
Paradox
S1 Ep10
7.9
5th Jul 2008
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.
Pier Pressure
S1 Ep7
7.9
31st May 2008
While Ben has a date with Julie, it is soon ruined when an alien named Ship makes trouble at the local fair.
X = Ben + 2
S1 Ep13
7.9
31st Aug 2008
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.
Ghost Town
S3 Ep10
7.9
20th Nov 2009
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.
Vendetta
S3 Ep18
7.8
19th Mar 2010
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.
Ben 10 Returns (1)
S1 Ep1
7.8
18th Apr 2008
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.
Voided
S2 Ep8
7.8
5th Dec 2008
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
Vengeance of Vilgax (1)
S3 Ep1
7.8
11th Sep 2009
Vilgax, after conquering 10 planets, comes to Earth to destroy Ben.
Unearthed
S2 Ep11
7.8
25th Mar 2009
Ben cares for a baby monster and helps locate its parents before the DNAliens find it.
Worst Episodes of Ben 10: Alien Force
Vengeance of Vilgax (2)
S3 Ep2
6.8
11th Sep 2009
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.
If All Else Fails
S3 Ep8
6.8
6th Nov 2009
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.
Busy Box
S3 Ep12
7.1
11th Dec 2009
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.
Vreedle, Vreedle
S3 Ep6
7.1
16th Oct 2009
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.
Primus
S3 Ep14
7.1
15th Jan 2010
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.
Fool's Gold
S3 Ep4
7.2
25th Sep 2009
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.
Single Handed
S3 Ep7
7.3
23rd Oct 2009
A bounty hunter tries to remove the Omnitrix from Ben.
Ben 10 Returns (2)
S1 Ep2
7.4
18th Apr 2008
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.
Simple
S3 Ep5
7.4
9th Oct 2009
An alien named Probity seeks help from Ben to stop the on-going war on her home planet.
All that Glitters
S1 Ep5
7.4
10th May 2008
Grandpa Max leaves Ben a series of instructions to contact a team of heroes. Things go the wrong direction when they soon find them.
The Gauntlet
S1 Ep9
7.5
14th Jun 2008
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.
War of the Worlds (2)
S2 Ep13
7.5
27th Mar 2009
Ben goes to the HighBreeds' world in an attempt to stop their attack on Earth.
Everybody Talks About the Weather
S1 Ep3
7.5
26th Apr 2008
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.
War of the Worlds (1)
S2 Ep12
7.5
27th Mar 2009
Ben, Gwen and Kevin gather their allies to counter the threat of the incoming Highbreed fleet. Azmuth reveals a secret about the Omnitrix.
Ben 10: Alien Force Episode Guide
Ben 10 Returns (1)
S1 Ep1
7.8
18th Apr 2008
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.
Ben 10 Returns (2)
S1 Ep2
7.4
18th Apr 2008
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.
Everybody Talks About the Weather
S1 Ep3
7.5
26th Apr 2008
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.
Kevin's Big Score
S1 Ep4
7.6
3rd May 2008
Kevin shatters Ben and Gwen's trust when he steals the Rust Bucket to sell for alien technology on the black market.
All that Glitters
S1 Ep5
7.4
10th May 2008
Grandpa Max leaves Ben a series of instructions to contact a team of heroes. Things go the wrong direction when they soon find them.
Max Out
S1 Ep6
7.7
17th May 2008
Gwen's older brother, Ken, is suddenly missing. As they look, they encounter a surprise leading to a shocking secret from the DNAliens.
Pier Pressure
S1 Ep7
7.9
31st May 2008
While Ben has a date with Julie, it is soon ruined when an alien named Ship makes trouble at the local fair.
What Are Little Girls Made Of?
S1 Ep8
8.0
7th Jun 2008
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.
The Gauntlet
S1 Ep9
7.5
14th Jun 2008
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.
Paradox
S1 Ep10
7.9
5th Jul 2008
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.
Be-Knighted
S1 Ep11
7.6
12th Jul 2008
The Forever Knights secure a weapon in hopes of aiding them slay a dragon they have held captive.
Plumber's Helpers
S1 Ep12
7.5
19th Jul 2008
Freelance young Plumbers mistake Ben and his team as a threat.
X = Ben + 2
S1 Ep13
7.9
31st Aug 2008
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.
