Baz-El is on a distant planet where he is stealing some valuable gems from some temple statues. Later, the temple guardian worshippers attack Baz-El. Ship suddenly hears Baz-El’s cries for help, and leaves Julie to help his old owner. Julie ask Ben for help to locate Ship, who left to help Baz-El. However, their break-up […]

Techadon Weapon Master Number 13 arrives on Earth and demands to have the Ultimatrix. A malfunction grants Gwen and Kevin the forms and unique abilities of some of Ben’s aliens.

Ben defeats an alien who was rampaging through Bellwood. The alien, named Galapagus, chronicles how he was kidnapped from his home world by Aggregor. He explains how he met four other aliens (Bivalvan, P’andor, Andreas, and Ra’ad), and they escaped him to end up crash landing on Earth. Ben mentions how they already found Bivalvan, […]

Julie is playing her first big game, while the Forever Knights are trying to break into a museum. Ben also wants to go see the opening of a new Sumo Slammers movie. To deal with his dilemma, he transforms into Echo Echo and then changes back to human, creating three copies of himself with differing […]

Azmuth contacts Ben on the Ultimatrix and is not happy with him for failing to stop Aggregor from claiming three of the four pieces to the Map of Infinity. When Ben tells Azmuth that scolding him is not going to help, Azmuth agrees and then teleports Ben, Gwen, and Kevin to the Rust Bucket in […]

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.

The Forever Knights discuss their plan for the weapon and Ben and the team come in to fight with Cash, J.T., and Oliver filming the scene. Kevin gets angry with them not helping and Psyphon comes in to destroy Cash and J.T., believing them to be the masterminds behind Ben Tennyson.

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.

Ben, Gwen, and Kevin go out into the wilderness for a camping trip. During a car race between Ben and Kevin, a strange pod falls from space. While trying to open the pod, Gwen cuts her hand on it. The pod then opens to reveal a beautiful, dark green-eyed, blonde-haired girl. Gwen gives the girl […]

With Ultimate Aggregor having all four pieces of the Map of Infinity, he’ll be on his way to the Forge of Creation (Alien X’s home planet). Professor Paradox helps Ben, Gwen and Kevin get to they need to go, but after Paradox left, Ben and the others ran into Ben’s younger self. The four of […]

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.

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 […]

Albedo profits from Ben’s fame and creates a play about him with the help of three alien actors based on several of the extraterrestrial forms in Ben’s Ultimatrix.

A strange alien is offering big money (over $1 million) to someone who can open a safe (which is really a containment suit). That alien is revealed to be P’andor, who wants to be free of his suit. Eventually, Kevin accidentally releases P’andor in his radioactive form, whom Ben, Gwen, and Kevin have to stop.

Ben is approached by a video game producer in order to make a Ben 10 video game. Unfortunately, this producer is actually working for Will Harangue, who intends to create a robot to destroy Ben. The producer has all of Ben’s aliens scanned, in order to have the robot learn their moves. The robot begins […]

Underwater on Piscciss, a Magister Plumber named Pyke is searching for something. He finds a swimming object, which happens to be Ultimate Aggregor, who seems to defeat Magister Pyke.

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

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.