A time experiment in the 1950s sends a bizarre monster to Ben’s time. Now Ben, Gwen, and Kevin must team up with Paradox, a time traveling hero, to face off…

When Ben stands up to Cash and JT, they soon discover a robotic gauntlet from Kevin’s vehicle. With it, Cash decides to get back on Ben, although this time, it’s…

When Ben and Gwen learn that their grandmother Verdona is an alien being, Verdona insists that Gwen should come along with her to her home planet and improve her abilities….

While Ben has a date with Julie, it is soon ruined when an alien named Ship makes trouble at the local fair.

Gwen’s older brother, Ken, is suddenly missing. As they look, they encounter a surprise leading to a shocking secret from the DNAliens.

Grandpa Max leaves Ben a series of instructions to contact a team of heroes. Things go the wrong direction when they soon find them.

Kevin shatters Ben and Gwen’s trust when he steals the Rust Bucket to sell for alien technology on the black market.

Gwen discovers that Grandpa Max’s badge is able to signal other Plumbers. However, by using it, they meet up with a familiar face, a pyronite.

Ben, Gwen, and Kevin follow a lead that takes them to a secret base in the desert. There they hope to find Grandpa Max but instead find a Highbreed spaceship…

Ben discovers that the Forever Knights are trading weapons with the DNAliens, while at the same time, Grandpa Max has mysteriously gone missing. He decides to return the Omnitrix on…

Ben goes to the HighBreeds’ world in an attempt to stop their attack on Earth.

Ben, Gwen and Kevin gather their allies to counter the threat of the incoming Highbreed fleet. Azmuth reveals a secret about the Omnitrix.

Ben cares for a baby monster and helps locate its parents before the DNAliens find it.

The gang helps the prince of the arachna-chimps regain power

Ben and the gang rescue a runaway prisoner of the DNAliens.

After Gwen receives an S.O.S. from Helen, Ben must go into the Null Void to save her and Manny. Once there, he must find The Wrench in order to stop…

When Ben’s parents discover his ability to turn into aliens, they forbid him from using the Omnitrix and later ground him from using it again. Eventually Gwen is grounded too…

To find and destroy the alien dragon species, the Forever Knights capture Ship to control a starship they built out of alien technology to locate their homeworld and destroy them.

Cooper is kidnapped by the DNAliens, who want him to build a mystery arch.

Kevin asks Gwen to the school dance; Ben fears he’s losing control of the Omnitrix.

An alien impersonates Ben with hopes of using his Omnitrix to annihilate him.

During a battle Ben and an alien commander are teleported to a distant world. They must put their differences aside if they’re going to have any chance of finding a…

A new villain comes into town, his name is Darkstar, he commits some crimes and gets the team’s attention fast

Powerless, Ben goes aboard Vilgax’s ship and faces off with Vilgax to stop his invasion of Earth in their final battle. Albedo gives Ben the Ultimatrix and Ben gets his…

Albedo has stolen the Ultimatrix from Azmuth and has used it to kidnap Gwen and Kevin. Ben goes to face Albedo and rescue his friends when he quickly discovers that…

Kevin returns home to find his house ransacked, so he enlists Ben and Gwen’s help to find out who did it and why. They soon cross paths with Ragnarok, a…

The Plumber’s Helpers are called upon by Grandpa Max to rescue him from an abandoned space station where he’s being attacked by Ben! The team must now find a way…

While sick, Ben is visited by old friend Tetrax, who demands that Ben hand over Chromastone.

Despite being warned by Paradox, Gwen travels back in time to prevent the accident that turned Kevin into a monster from ever happening. Gwen returns to the present only to…

The Omnitrix transports Ben, Gwen, and Kevin to a planet called Primus, which turns out to have been created by Azmuth. They must stop Vilgax from stopping the Omnitrix at…

Zaw-Veenull asks Ben to deliver Prince Tiffin to Jarret in order to keep peace between the two species. Shortly, after their trip in space, the Omnitrix malfunctions and turns Ben…

Ben, Kevin and Gwen come across an alien box that can forms into a robotic version of whatever it sees. It power becomes a liability when the Vreedle brothers decide…

Kevin makes a temporary truce with Darkstar to retrieve an artifact that will return them into their former selves.

Vilgax promises Ghostfreak to spring him out of prison as long as he tells him the secrets of the Omnitrix, but when Ghostfreak betrays him and turns his people into…

Kevin is beginning to lose all hope that he will someday return to his human self. He then meets a girl who doesn’t seem to mind the form he is…

A series of earthquakes awakens a HighBreed officer who has been hibernating deep under the earth’s surface. He believes the HighBreed have lost the war and activates a fail safe…

A bounty hunter tries to remove the Omnitrix from Ben.

Ship’s owner decides he wants him back and hires some repo men to retrieve him. Ben and Kevin go to court to take care of things legally, leaving Gwen and…

An alien named Probity seeks help from Ben to stop the on-going war on her home planet.

A species of goat-like aliens comes to Earth for a popcorn festival. Ben, Gwen, and Kevin have a big problem when one of the aliens eats meat and turns into…