Season 2
Episodes
S2 · E1 · 4 Feb 2011 · 23 min
The Transmogrification of Eunice
A mysterious alien girl named Eunice has no memory and is being hunted by Sunder. While evading Sunder, Ben soon discovers that Eunice has nature-based abilities.
S2 · E2 · 11 Feb 2011 · 23 min
Eye of the Beholder
Ben, Julie and the rest of the heroic crew embark on a dangerous journey that could cost them all their lives in an effort to achieve the safe return of Ship and his former owner Baz-L.
S2 · E3 · 18 Feb 2011 · 23 min
Viktor: The Spoils
The King of Zarkovia asks the team for help with a civil war. The team agrees to help when they find out Dr. Viktor may be involved.
S2 · E4 · 4 Mar 2011 · 23 min
The Big Story
Jimmy Jones is looking for the biggest new story he and Ben can tackle, but thats when he stumbles upon a strange pink tentacled creature which crashed from the sky into a near by cave.
S2 · E5 · 11 Mar 2011 · 23 min
Girl Trouble
Gwen is excited by the prospect of her cousin Sunny paying the team a visit while dealing with the Robots of Dimension 12. But her excitement quickly turns into trepidation when it is uncovered that her cousin is not all that she appears and has some particularly sinister intentions.
S2 · E6 · 18 Mar 2011 · 23 min
Revenge of the Swarm
Victor Validus resurfaces and attacks Ben at night. Elena Validus and the nanochips return.
S2 · E7 · 25 Mar 2011 · 23 min
The Creature from Beyond
The Forever Knights unleash an evil force mistaken for an ancient weapon.
S2 · E8 · 1 Apr 2011 · 23 min
Basic Training
Ben, Gwen, and Kevin are summoned to a Plumbers' Academy to go under training that is supervised by Magister Hulka.
S2 · E9 · 8 Apr 2011 · 23 min
It's Not Easy Being Gwen
Gwen has always been a multi-tasker, trying to juggle school, hobbies, friends and her work as a hero, waking up early and going to sleep late. But Gwen's already packed day is about to get worse when Dr. Animo attacks with an army of giant frogs and Gwen is forced to make a hard choice.
S2 · E10 · 15 Apr 2011 · 23 min
Ben 10,000 Returns
Following a visit from Paradox after a fight with Eon, Ben 10,000 arrives 20 years from the future to seek the aid of his past counterpart in tracking down Eon.
S2 · E11 · 22 Apr 2011 · 23 min
Moon Struck
Grandpa Max tells the team about his first UFO encounter, which led him to meet Verdona.
S2 · E12 · 29 Apr 2011 · 23 min
Prisoner #775 Is Missing
After a base is attacked, Max is infuriated when they learn it was a secret alien prison facility. While Max argues with the officer in charge, the team tries to locate an escaped prisoner.
S2 · E13 · 16 Sept 2011 · 23 min
The Purge
Old George, the original Forever Knight, reclaims his position, and orders the Knights to remove all aliens on Earth.
S2 · E14 · 23 Sept 2011 · 23 min
Simian Says
Simian asks the team for help when a DNAlien takes over his home world.
S2 · E15 · 30 Sept 2011 · 23 min
Greetings from Techadon
Ben faces Tecadon killer robots that have been programmed to kill him. Each robot is more powerful than the last one. Ben's only chance to survive is for Gwen to find out who commissioned the robots.
S2 · E16 · 7 Oct 2011 · 23 min
The Flame Keeper's Circle
Julie gets Ben to visit a charity organization who wants to improve the world with alien technology. Ben soon discovers the charity's benefactor is an old enemy.
S2 · E17 · 14 Oct 2011 · 23 min
Double or Nothing
Ben finds out there's a new show called 'Ben 10: Live." He finds an old enemy running the show and cashing in on his fame.
S2 · E18 · 21 Oct 2011 · 23 min
The Perfect Girlfriend
Julie suddenly leaves a tennis tournament and spends all her time with Ben.
S2 · E19 · 28 Oct 2011 · 23 min
The Ultimate Sacrifice
Ben's Ultimate transformations have developed their own personalities. Now they want their freedom from Ben.
S2 · E20 · 4 Nov 2011 · 23 min
The Widening Gyre
Colonel Rozum asks the team to investigate an island of garbage where people have been disappearing.
S2 · E21 · 18 Nov 2011 · 23 min
The Mother of All Vreedles
Ma Vreedle goes to Earth to expand her family by creating clones and using all the water on Earth.
S2 · E22 · 2 Dec 2011 · 23 min
A Knight to Remember
The Flame Keepers realize their mistake too late. Vilgax wants the power of Daigon. The Forever Knights are out to destroy Daigon. Ben and the team try to sort things out.
S2 · E23 · 9 Dec 2011 · 23 min
Solitary Alignment
Azmuth reveals the origin of the sword and how he first encountered Old George. Ben comes to a decision on how to handle the Daigon.
S2 · E24 · 4 Feb 2012 · 23 min
Inspector #13
A Techadon weapon master comes to Earth and wants the Ultimatrix.
S2 · E25 · 11 Feb 2012 · 23 min
The Enemy of My Frenemy
Gwen and co revisit Legerdomain in hopes of rescuing Charmcaster.
S2 · E26 · 18 Feb 2012 · 23 min
Couples Retreat
After Darkstar opens the Door to Anywhere, Charmcaster comes through, and the two team up to give Ben, Gwen, and Kevin the fight of a lifetime.
S2 · E27 · 25 Feb 2012 · 23 min
Catch a Falling Star
Movie starlet Jennifer Nocturne is recaptured by the evil Captain Nemesis!
S2 · E28 · 3 Mar 2012 · 23 min
The Eggman Cometh
Dr. Animo is unexpectedly paroled from prison and starts up a company selling eggs, which in fact contain mutant dinosaurs which he wishes to distribute around the world.
S2 · E29 · 10 Mar 2012 · 23 min
Night of the Living Nightmare
Albedo attempts to get the ultimatrix by invading Ben's mind.
S2 · E30 · 17 Mar 2012 · 23 min
The Beginning of the End
The final battle between the Forever Knights and Dagon's Esoterica is in full swing, with Ben caught in the middle!
S2 · E31 · 24 Mar 2012 · 23 min
The Ultimate Enemy (1)
Dagon is getting closer and closer to entering our dimension thanks to an old foe.
S2 · E32 · 31 Mar 2012 · 23 min
The Ultimate Enemy (2)
Vilgax re-emerges in his most powerful form ever! Can Ben stop him and save the universe?
Data and images from TMDB.