After defeating Vilgax, Ben battles Dagon in his True Form as Ultimate Way Big.

Ben, Gwen, Kevin, and George trash Diagon's City while battling a reborn, Lucubra-morphed, power hungry Vilgax. Diagon is released and plans to become ruler of Ben's Universe.

The final battle between the Forever Knights and Dagon's Esoterica is in full swing, with Ben caught in the middle.

Albedo attempts to get even with Ben, by trapping him in a dream version of Bellwood, and dispatching an assortment of villains, as well as versions of Gwen and Kevin desiring the Ultimatrix, to attempt to defeat him.

Dr. Animo returns with a plot to transform eggs into pterodactyls.

Movie starlet Jennifer Nocturne is recaptured by the evil Captain Nemesis!

Charmcaster and Darkstar team up to destroy Ben, Gwen and Kevin.

Gwenand the gang revisit Legerdomain in hopes of rescuing Charmcaster.

A Techadon weapon master comes to Earth and wants the Ultimatrix.

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.

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.

Ma Vreedle goes to Earth to expand her family by creating clones and using all the water on Earth.

Colonel Rozum asks the team to investigate an island of garbage where people have been disappearing.

Ben's Ultimate transformations have developed their own personalities. Now they want their freedom from Ben.

Julie suddenly leaves a tennis tournament and spends all her time with Ben.

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.

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.

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.

Simian asks the team for help when a DNAlien takes over his home world.

Old George, the original Forever Knight, reclaims his position, and orders the Knights to remove all aliens on Earth.

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.

Grandpa Max tells the team about his first UFO encounter, which led him to meet Verdona.

20 years in the future, Eon attacks Ben 10,000, then disappears. Adult Ben travels back in time fearing Eon will attack his younger self, the present day Ben.

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.

Ben, Gwen, and Kevin are summoned to a Plumbers' Academy to go under training that is supervised by Magister Hulka.

The Forever Knights open an ancient vault hoping to find weapons. They unwittingly release a creature.

Ben is attacked by Victor Validus. The team soon discovers that Validus passed away. The team turns to Ben's friend, Elena, for help to locate the Nanite Queen.

Cousin Sunny is supposed to stay with Gwen for the summer. The team learns why her parents sent their child to Gwen when she helps them stop a robot invasion.

Jimmy investigates a possible alien sighting. But with no solid evidence, few believe him. As Ben starts acting strangely, the others suspect Jimmy may be right.

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.

Ship runs away to help Baz-El. Julie turns to Ben for help, but after their break up, he's reluctant. Gwen and Kevin accompany Julie on her quest.

The team's camping break is interrupted when a pod crashes nearby. The occupant has no memory who she is or where she came from. Sunder soon arrives to retrieve her.