The following is a list of episodes for the original
series. There are a total of 49 episodes, 9 shorts and 3 movies.
Season 1: 2005-2006 (Episodes 1-13)
And Then There Were 10 1 December 27, 2005
Ben gains a device, the Omnitrix, which allows him to transform into many aliens with incredible powers!
Washington B.C. 2 January 13, 2006
A sinister and cruel scientist by the name of Aloysius Animo wreaks havoc on Washington.
The Krakken 3 January 14, 2006
A man named Jonah steals the Krakken's eggs, causing the lake monster to go wild.
Permanent Retirement 4 January 21, 2006
Ben visits his great Aunt Vera in a retirement home, but discovers that creatures called the Limax are taking over residents' bodies.
Hunted 5 January 28, 2006
Vilgax sends three bounty hunters to get the Omnitrix, but they have a tough time doing so.
Tourist Trap 6 February 4, 2006
Ben visits Sparksville, a town full of cheesy exhibits, and unintentionally lets loose an alien with a dangerous sense of humor.
Kevin 11 7 February 11, 2006
After a fight with Grandpa Max, Ben makes friends with a kid called Kevin, who goes mad with power!
The Alliance 8 February 18, 2006
When Grandpa Max gets injured in a fight, Ben decides that he and Gwen are better off without him.
Last Laugh 9 February 25, 2006
When an evil circus clown kidnaps Gwen, Ben must conquer his fear of clowns to stop him.
Lucky Girl 10 March 4, 2006
When Ben gives Gwen a luck charm, she decides to become a hero called "Lucky Girl".
A Small Problem 11 March 11, 2006
Ben (as Grey Matter) gets caught by a man named Howell, who hands him over to the Forever Knights.
Side Effects 12 March 18, 2006
Ben catches a cold, which turns out to have interesting side effects on his aliens when he battles a bug villain named Clancy.
Secrets 13 March 25, 2006
Ben encounters his most deadly enemy yet: Vilgax, who plans to steal the Omnitrix and use it to rule the universe!
Season 2: 2006 (Episodes 14-26)
May 29, 2006
The gang meet an old colleague of Grandpa who is not all he seems.
The Big Tick 15
May 30, 2006
Ben has to face a new, extremely dangerous threat, using a brand new alien.
May 31, 2006
Kevin is back! This time he frames Ben of being a menace, before merging into an incredibly powerful form!
Gwen 10 17
June 1, 2006
Ben wakes up in an alternate world where Gwen finds the Omnitrix.
Grudge Match 18
June 7, 2006
Ben and Kevin are taken on board an intergalactic wrestling ship. Now they must put aside their differences to escape...if they survive first.
The Galactic Enforcers 19
June 13, 2006
A group of super heroes team up with Ben to defeat Sixsix and Vulkanus who plan on building a bomb that could destroy the solar system.
Camp Fear 20
June 21, 2006
Ben goes to a camp which has been taken over by alien plants.
Ultimate Weapon 21
July 6, 2006
Grandpa Max starts behaving differently when the Forever Knights plan to steal the Sword of Ek Chuaj.
Tough Luck 22
July 12, 2006
Gwen needs to become Lucky Girl again when Hex and Charmcaster return for vengeance.
They Lurk Below 23
July 18, 2006
Ben encounters the cause for the Bermuda Triangle.
Ghostfreaked Out 24
July 25, 2006
Ghostfreak escapes from the Omnitrix and vows Ben's body!
Dr. Animo and the Mutant Ray 25
August 25, 2006
Dr Animo returns whilst Ben has some problems with his alien forms.
Back with a Vengeance 26
October 9, 2006
Ben unlocks an unstoppable combination on the Omnitrix! And since Vilgax and Kevin join forces, he's going to need it!
Season 3: 2006-2007 (Episodes 27-39)
Ben 10,000 27
November 25, 2006
Ben travels to the future and meets his older self but finds out he is not all he expected.
Midnight Madness 28
December 2, 2006
An evil hypnotist prepares to turn all the people in a shopping mall into his own slaves...forever!
A Change of Face 29
December 9, 2006
Charmcaster returns with a new, mastermind plan to get the Omnitrix.
Merry Christmas 30
December 11, 2006
Grandpa Max is kidnapped and turned into a fake Santa Claus.
February 17, 2007
Ben is attacked by the Yenaldooshi and is beginning to turn into a werewolf - or is he?
Game Over 32
February 24, 2007
Ben and Gwen are sucked into Ben's favorite game, Sumo Slammers!
Super Alien Hero Buddy Adventures 33
February 24, 2007
Ben finds people making shows about his alien forms.
Under Wraps 34
March 10, 2007
Ben faces a tough fight with a Mummy who possesses a strange crystal that could turn everyone into a monster!
The Unnaturals 35
March 17, 2007
Ben finds out that Cash and J.T. are playing a baseball match. However the opposing team is not real. They're too perfect...
Monster Weather 36
March 24, 2007
A weather machine goes out of control and starts making weather monsters!
The Return 37
April 7, 2007
Dr Viktor, the Yenaldooshi and the Mummy team up to bring Zs'Skayr back.
Be Afraid of the Dark 38
April 14, 2007
Zs'Skayr plans to block out the sun and make the Earth a dark, dark place....
The Visitor 39
April 21, 2007
Grandpa Max's alien friend Xylene returns to Earth to give him the Omnitrix and Ben unlocks a brand new alien.
Season 4: 2007-2008 (Episodes 40-49)
Perfect Day 40 July 14, 2007
Ben has a great day! But when the Forever Knights are shown to be behind it, it turns out to be a nightmare.
Divided We Stand 41 July 19, 2007
Ben unlocks a new alien, Ditto! Meanwhile, Dr. Animo returns with plans to utilize the Omnitrix for himself.
Don't Drink the Water 42 July 26, 2007
Hex returns for the water of the Fountain of Youth.
Big Fat Alien Wedding 43 August 2, 2007
The trio attend a wedding between a Tennyson and an alien.
Ben 4 Good Buddy 44 September 22, 2007
Three crooks steal the Rustbucket.
Ready to Rumble 45 September 29, 2007
Thinking he broke Gwen's laptop, Ben signs up for a wrestling tournament to get the money required to replace it.
Ken 10 46 October 6, 2007
In the future, Ken, the son of Ben, gets an Omnitrix... and a new best friend. But that friend has a connection with Kevin...
Ben 10 vs. the Negative 10: Part 1 47 March 9, 2008
Driscoll, the Forever King, creates a team to destroy Ben.
Ben 10 vs. the Negative 10: Part 2 48 March 9, 2008
Ben prepares for his greatest battle yet!
Goodbye and Good Riddance 49 April 15, 2008
Ben's done with summer, but Vilgax isn't done with Ben!
Hijacked 1 July 14, 2007
When Max and Gwen trust Ben to look over the Rust Bucket, two people make the mistake of hijacking the RV.
Snack Break 2 February 18, 2008
Ben tries to cheat a snack vending machine by turning into Grey Matter.
Survival Skills 3 March 10, 2008
Max makes Ben build a campfire warning him not to use the Omnitrix but Ben still disobeys.
Radio Dazed 4 March 24, 2008
Ben goes Upgrade to get the radio station that HE wants to hear!
Sleepaway Camper 5 April 7, 2008
Ben gets fed up with Grandpa Max snoring, even after he tries several ways of falling asleep!
Dogged Pursuit 6 April 21, 2008
Ben chases a robber who stole an old lady's purse, but then he finds the old lady as a bigger problem!
Let the Games Begin 7 July 1, 2008
Ben tries to cheat at Bingo by first using XLR8.
Handle with Care 8 July 8, 2008
Ben transforms into Diamondhead when a couple of robbers break into a crystal art museum. He tries to keep the eggs away from the robbers, but also tries to avoid breaking them.
Road Trip Rumble 9 March 12, 2012
Ben and Gwen's backseat bickering escalates into an all out battle between Ben's Omnitrix and Gwen's magic. Ben fights Gwen as Four Arms and Upgrade eventually destroying their surroundings, upsetting Grandpa Max.
I-10: The Ben 10 User Generated Experience April 14, 2008
Cartoon Network gives the Ben 10 fans a chance to say what they like about the show, as well as revealing behind the scenes facts, sneak peeks of the upcoming series, and promoting fanmade videos.