Release Date
PremieredBen 10: Ultimate Alien Season 2 released on February 4, 2011.
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Sign In to Track ProgressSeasons
The Transmogrification of Eunice
The gang meet a new girl called Eunice and everything is going well... until Sunder shows up for her.
Eye of the Beholder
When Baz-El gets captured, it's up to Ben and the others to rescue him.
Viktor: The Spoils
The team are called in to investigate a dispute in the small country of Zarkovia. Once there, they discover an old enemy is about to be unleashed.
The Big Story
While looking for a story to put on his site, Jimmy sees a strange meteorite fall to Earth.
Girl Trouble
Gwen is infuriated by the prospect of her cousin paying the team a visit, and it only gets worse when it is uncovered that her cousin is not entirely human...
Revenge of the Swarm
The gang face the swarm again, but this time with a new, more powerful queen.
The Creature from Beyond
An evil creature released from another dimension has plans to enslave the human race for its master.
Basic Training
Ben, Gwen, and Kevin are forced to go through basic training at the Plumbers' Academy.
It's Not Easy Being Gwen
A day in the hectic life of Gwen Tennyson.
Ben 10,000 Returns
Ben 10,000 returns to help Ben battle a new, dangerous threat.
Moonstruck
Max tells the kids about his first encounter with aliens and the story of how he and Verdona met and fell in love.
Prisoner Number 775 is Missing
The team takes a look at the real purpose of Area 51 and have to recapture an escaped alien prisoner.
The Purge
Old George brings the Forever Knights in one group in order to vanquish every alien being on Earth.
Simian Says
A Xenocyte Queen takes over the Arachnichimps' home planet.
Greetings from Techadon
Ben finds himself in an inescapable situation when Techadons, custom-made to destroy him, start coming after him.
The Flame Keepers' Circle
Julie joins a fanatical group who, unbeknownst to her, have discovered Vilgax and worship him.
Double or Nothing
Albedo resurfaces, and he's making money off of Ben's fame.
The Perfect Girlfriend
The nanochips are back, and have disguised themselves as Julie.
The Ultimate Sacrifice
The six Ultimate Forms demand their freedom from the Ultimatrix.
The Widening Gyre
The team battles a new, dangerous threat in the Pacific Ocean.
The Mother of All Vreedles
Ma Vreedle plans to create a clone army of her newest spawn, using all of Earth's saltwater as a key ingredient in the cloning process.
A Knight to Remember
Vilgax and the Flame Keepers' Circle duel George and the Forever Knights, who oppose their goals of reviving Dagon.
Solitary Alignment
Azmuth reveals how Sir George got his sword and slayed Dagon, and the team decides to make a deal with the First Knight.
Inspector 13
A mysterious weapon master from Techadon visits Earth and wants the Ultimatrix to enhance his creations.
Enemy of My Frenemy
Ben, Gwen, and Kevin set out to rescue Charmcaster from Ledgerdomain, but, unbeknownst to them, Charmcaster has plans of her own.
Couples Retreat
Darkstar finds his way into Ledgerdomain, where he seduces Charmcaster, using her energies in his latest attempt to destroy Ben, Gwen, and Kevin.
Catch a Falling Star
Movie star Jennifer Nocturne, who is not in her right mind, teams up with the evil Captain Nemesis.
The Eggman Cometh
Dr. Animo returns with an army of dragon-like mutants, while Ben has his own problems with his new transformation, Juryrigg.
Night of the Living Nightmare
Albedo tries to reclaim the Ultimatrix from Ben by transporting him into one of his own worst nightmares.
The Beginning of the End
The Flame Keepers' Circle try to release Dagon from his dimension, but Vilgax is released instead.
The Ultimate Enemy (1)
Dagon breaks out of the seal and turns all humans into Flame Keepers' Circle soldiers.
The Ultimate Enemy (2)
Vilgax betrays Dagon so that he can absorb all of his power to destroy his one true enemy: Ben Tennyson.
Ben 10: Ultimate Alien
Season 2
Release Date
PremieredBen 10: Ultimate Alien Season 2 released on February 4, 2011.
Your Progress
Track your watching progress by signing in
Sign In to Track ProgressThe Transmogrification of Eunice
The gang meet a new girl called Eunice and everything is going well... until Sunder shows up for her.
Eye of the Beholder
When Baz-El gets captured, it's up to Ben and the others to rescue him.
Viktor: The Spoils
The team are called in to investigate a dispute in the small country of Zarkovia. Once there, they discover an old enemy is about to be unleashed.
The Big Story
While looking for a story to put on his site, Jimmy sees a strange meteorite fall to Earth.
Girl Trouble
Gwen is infuriated by the prospect of her cousin paying the team a visit, and it only gets worse when it is uncovered that her cousin is not entirely human...
Revenge of the Swarm
The gang face the swarm again, but this time with a new, more powerful queen.
The Creature from Beyond
An evil creature released from another dimension has plans to enslave the human race for its master.
Basic Training
Ben, Gwen, and Kevin are forced to go through basic training at the Plumbers' Academy.
It's Not Easy Being Gwen
A day in the hectic life of Gwen Tennyson.
Ben 10,000 Returns
Ben 10,000 returns to help Ben battle a new, dangerous threat.
Moonstruck
Max tells the kids about his first encounter with aliens and the story of how he and Verdona met and fell in love.
Prisoner Number 775 is Missing
The team takes a look at the real purpose of Area 51 and have to recapture an escaped alien prisoner.
The Purge
Old George brings the Forever Knights in one group in order to vanquish every alien being on Earth.
Simian Says
A Xenocyte Queen takes over the Arachnichimps' home planet.
Greetings from Techadon
Ben finds himself in an inescapable situation when Techadons, custom-made to destroy him, start coming after him.
The Flame Keepers' Circle
Julie joins a fanatical group who, unbeknownst to her, have discovered Vilgax and worship him.
Double or Nothing
Albedo resurfaces, and he's making money off of Ben's fame.
The Perfect Girlfriend
The nanochips are back, and have disguised themselves as Julie.
The Ultimate Sacrifice
The six Ultimate Forms demand their freedom from the Ultimatrix.
The Widening Gyre
The team battles a new, dangerous threat in the Pacific Ocean.
The Mother of All Vreedles
Ma Vreedle plans to create a clone army of her newest spawn, using all of Earth's saltwater as a key ingredient in the cloning process.
A Knight to Remember
Vilgax and the Flame Keepers' Circle duel George and the Forever Knights, who oppose their goals of reviving Dagon.
Solitary Alignment
Azmuth reveals how Sir George got his sword and slayed Dagon, and the team decides to make a deal with the First Knight.
Inspector 13
A mysterious weapon master from Techadon visits Earth and wants the Ultimatrix to enhance his creations.
Enemy of My Frenemy
Ben, Gwen, and Kevin set out to rescue Charmcaster from Ledgerdomain, but, unbeknownst to them, Charmcaster has plans of her own.
Couples Retreat
Darkstar finds his way into Ledgerdomain, where he seduces Charmcaster, using her energies in his latest attempt to destroy Ben, Gwen, and Kevin.
Catch a Falling Star
Movie star Jennifer Nocturne, who is not in her right mind, teams up with the evil Captain Nemesis.
The Eggman Cometh
Dr. Animo returns with an army of dragon-like mutants, while Ben has his own problems with his new transformation, Juryrigg.
Night of the Living Nightmare
Albedo tries to reclaim the Ultimatrix from Ben by transporting him into one of his own worst nightmares.
The Beginning of the End
The Flame Keepers' Circle try to release Dagon from his dimension, but Vilgax is released instead.
The Ultimate Enemy (1)
Dagon breaks out of the seal and turns all humans into Flame Keepers' Circle soldiers.
The Ultimate Enemy (2)
Vilgax betrays Dagon so that he can absorb all of his power to destroy his one true enemy: Ben Tennyson.