The Worst Episodes of Ben 10: Ultimate Alien

Ben is supposed to attend a tournament to support his girlfriend, but the Forever Knights are trying to break into a museum. Ben tries to use the Ultimatrix to handle all his obligations.

Director: Butch Lukic

Writer: Len Uhley

Cash and JT convince the team to allow them to take credit for the team's actions so they can earn money for Cash's mother's operation.

Director: Matt Youngberg

Writer: Peter David, Joe Casey, Joe Kelly

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.

Director: Butch Lukic

Writer: Joe Casey, Joe Kelly, Kevin Grevioux

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.

Director: Dan Riba

Writer: Len Uhley, Joe Casey, Duncan Rouleau

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.

Director: Matt Youngberg

Writer: Ernie Altbacker, Joe Casey, Joe Kelly

Ben gets an offer to star in his own video game, but the designer's real motives are part of a plan to destroy Ben.

Director: Dan Riba

Writer: Joe Casey, Joe Kelly

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

Director: Dan Riba

Writer: Joe Casey, Joe Kelly

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.

Director: Dan Riba

Writer: Joe Casey, Joe Kelly

The Forever Knights unleash an evil force mistaken for an ancient weapon.

Director: Dan Riba

Writer: Len Uhley, Joe Casey, Duncan Rouleau

Aggregor is after the next piece of the map on a watery planet.

Director: Dan Riba

Writer: Marty Isenberg, Joe Casey, Joe Kelly

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.

Director: Matt Youngberg

Writer: Joe Casey, Joe Kelly

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

Director: Butch Lukic

Writer: Joe Casey, Joe Kelly, Adam Beechen

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

Director: Matt Youngberg

Writer: Charlotte Fullerton, Joe Casey, Joe Kelly

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

Director: Butch Lukic

Writer: Joe Casey, Joe Kelly, J. M. DeMatteis

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

Director: Dan Riba

Writer: Joe Casey, Joe Kelly

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.

Director: Butch Lukic

Writer: Len Uhley, Joe Casey, Duncan Rouleau

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.

Director: N/A

Writer: N/A

Albedo attempts to get the ultimatrix by invading Ben's mind.

Director: Dan Riba

Writer: N/A

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

Director: Butch Lukic

Writer: Charlotte Fullerton, Eugene Son

Victor Validus resurfaces and attacks Ben at night. Elena Validus and the nanochips return.

Director: Butch Lukic

Writer: Joe Casey, Joe Kelly, Stan Berkowitz

Ben's secret is out. As Ben deals with his newfound fame, a new threat emerges as a thief steals parts of a new advanced spaceship from NASA.

Director: Dan Riba

Writer: Dwayne McDuffie

Then team encounters another of Aggregor's escaped prisoners, Andreas, whom Argit is using as part of a scheme against the Forever Knights.

Director: Dan Riba

Writer: Ernie Altbacker, Joe Casey, Joe Kelly

Ben meets his hero, Captain Nemesis, who's become jealous of all the attention Ben attracts.

Director: Matt Youngberg

Writer: Steven Barnes, Joe Casey, Joe Kelly

After Jimmy Jones reveals Ben's identity, some of his enemies (such as Zombozo, Rojo, Charmcaster, Vulkanus, and Sevenseven) team up to try to attack his family. Now Ben and his friends have to protect them no matter what.

Director: Matt Youngberg

Writer: Len Wein

Kevin's out for payback on anyone who has ever crossed him. His next stop is a prison in the Null Void. Ben and Gwen try to stop him, where Ben comes to a grim decision.

Director: Butch Lukic

Writer: Joe Casey, Joe Kelly