Ben and Gwen arrive in Incarceon to tell Morgg that Ultimate Kevin is going to kill him. Morgg ignores their warning and has his robots take them to a room to stay in until a supply ship picks them up. Meanwhile, while the prisoners are still mining, Ultimate Kevin flashes back to the last time […]

As Ben laments that things can’t get worse, Aggregor shows up to recapture Ra’ad. The gang try to fight Aggregor, but he proves to be too strong for them. The Ultimatrix finally lets Ben transform, but unfortunately, all that he can transform into is an Amperi. With no choice, Ben transforms into AmpFibian and fights […]

An evil creature known as Lucubra released from another dimension has plans to enslave the human race for its master. The Forever Knights intend to annihilate the creature at all costs and refuse Ben’s aid. Fortunately, Gwen ultimately succeeds in utilizing her increasingly strong magic to send it back from whence it came.

Zarcovia’s soldiers has found the frozen body of Dr. Viktor. Prince Gyula and King Xarion want to see this weapon. Gyula wants to control Dr. Viktor to use him against rebels in their civil war, but Xarion tells him not to. King Xarion asks for help from Ben, Gwen, and Kevin and explains what Gyula […]

Azmuth reveals in his memories how Old Sir George had acquired the great and mighty sword of Ascalon, and how he had sealed Diagon the first time millennia ago. In addition, he reveals the real reasons for his eventual creation of the Omnitrix and Ultimatrix.

Ma Vreedle plans to spawn an army of Pretty Boy Vreedle clones, which could dry up Earth’s oceans.

Following a visit from Paradox after a fight with Eon, Ben 10,000 from an alternate future arrives twenty years from the future to seek the aid of his past counterpart in tracking down Eon. It is revealed that Eon is actually an adult Ben from an alternate world, and that he wants to destroy all […]

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

While taking a ride in Ben’s car, Ben and Gwen discuss that Ultimate Kevin is still continuing his rampage on everyone that wronged him and that he needs to be taken care of. Just then, Ben accidentally runs over Argit, but he survives. Argit explains that he needs their help to hide from Ultimate Kevin.

The ultimate aliens inside Ben’s Ultimatrix demand their freedom and end up sucking Ben into the Ultimatrix. While Gwen unleashes her astral projection (in the form her innermost anodite self) enters the Ultimatrix to help Ben, Kevin travels to planet Galvan Prime to convince Azmuth to help.

Ben, Gwen, and Kevin are summoned to Plumbers Academy to go under training. They create a good friendship with an alien named Tack and Ben dislikes the drill instructor, Magister Hulca, that is being targeted for revenge by a menacing Tetramand.

Simian accidentally unleashes a Xenocyte Queen which orchestrates an invasion of the Arachnichimps’ planet. When Eunice goes missing, Ben, Gwen, and Kevin end up helping Simian liberate the Arachnichimps’ planet from a DNAlien version of the Arachnichimp Mizaru.

One year after the events of Ben 10: Alien Swarm, Victor Validus attacks Ben at night but when he defends himself, he finds a Nanochip that was believed to have been destroyed along with its queen. Ben, Kevin and Gwen find Victor’s daughter, Elena who was once Ben’s middle school sweetheart, to see what is […]