Ben Tennyson, a 10-year-old soccer athlete from the city of Bellwood, begins summer vacation on a cross-country road trip with his parental grandfather Max in the latter’s RV (the Rust Bucket), but is livid when his smart-mouth twin cousin Gwen comes along. While camping at Yosemite National Park, Max tries to cheer up his grandchildren […]

While visiting Albuquerque, Four Arms reluctantly fights a female thief named Rojo, who injures Max. Ben realizes that the Omnitrix makes him a constant target and puts Gwen and Max in danger, but when he encounters Rojo again, this time telepathically controlled by Vilgax’s robots, Max’s advice helps Ben win. Vilgax makes telepathic contact with […]

When Ben and Max go on a fishing trip with Captain Shaw, they encounter the Krakken that lives in the lake. With Gwen’s help, they find out that the creature is upset because Jonah Melville, a poacher pretending to be an animal lover, is stealing its eggs.

Ben, Gwen, and Grandpa Max attend a family wedding for Max’s nephew Joel and his bride-to-be, Camille. Before the day of the wedding, Ben interrupts a mud alien’s attempt to sabotage the wedding. Ben defeats the sludge alien as Cannonbolt but finds the groom’s parents pointing rifles at him soon after. He escapes with Gwen’s […]

Clancy, a man who can control insects, wants to take revenge on Councilwoman Liang because she wants to tear down the building where he and his insects live. Meanwhile Ben has to deal with the strange side effects a cold has on his alien forms: Wildmutt is unable to see or smell, Four Arms smells […]

After Ben passes an obstacle course set up in the by Max, the Rustbucket breaks down outside the mining ghost town of Slatterville, New Mexico. Meanwhile, Vilgax hires three bounty hunters – Kraab, Sixsix, and Tetrax Shard – to retrieve the Omnitrix. Ben fights Tetrax, who reveals himself to be a Petrosapien. Tetrax criticizes his […]

During a visit to Salem, Massachusetts, Charmcaster attacks in an attempt to magically switch bodies with Ben to attain the great powers of the Omnitrix, but Gwen interferes, causing Charmcaster to switch with her instead. Gwen is punched out by Charmcaster before she can explain anything, and is then arrested and sent to juvie. Charmcaster […]

Ben and Gwen are playing the Sumo Slammer video game and Gwen is beating Ben at it. Ben turns into Upgrade and merges with the computer so he can lower Gwen’s score. As Gwen tries to get Ben out, lightning hits the van and zaps them both into the game. They realize that all of […]

Ben seems to be having a perfect day but when another Gwen and Grandpa Max show up, he discovers that Enoch and the Forever Knights have trapped him in a dream world while they attempt to remove the Omnitrix from his wrist. Revealed, Enoch turns the dream into a “nightmare”, which is Ben’s school. After […]

While visiting a travelling circus, Ben fights an evil clown named Zombozo who is draining people’s souls through their laughter. Conquering his own fear of clowns, Ben defeats Zombozo by terrifying him as Ghostfreak, and saves his family. Ben admits that he scares himself while fighting as Ghostfreak.

When Ben tries to take apart the Omnitrix to see how it works, he ends up breaking off its face and causing weird combinations of his alien forms when he transforms. Additionally, the broken piece begins mutating the smaller creatures it comes into contact with. Meanwhile, Dr. Animo escapes from prison and, during a battle […]

Dr. Animo has just escaped from prison with the help of a mutated seagull, plotting to get revenge on Ben, who is at the beach with Gwen and Max. Ben is being impulsive as no one will play with him, until he is confronted by Animo’s seagull. During the fight, Ben discovers a new alien […]

During a trip to New Orleans, Ben prevents a powerful sorcerer named Hex from stealing the Arkamada Book of Spells. During the fight Ben obtains one of Hex’s five magical Charms of Bezel and gives it to Gwen, giving her the supernatural ability of luck manipulation. Using a Mardi Gras costume, Gwen becomes a superheroine […]

During a trip to Niagara Falls, Ben accidentally figures out the master-control of the Omnitrix, allowing him to become any alien just by thinking about it at will. Elsewhere, Kevin has assumed control of the Megacruiser, and he locates and revives Vilgax, who realizes the nature of Kevin’s mutation and decides that he may be […]

Growing weak with old age, Hex is seeking out something to make him stay young. At the same time, Max is having difficulties with his aging body, so he decides to impress his grand-kids at a fair to show them he’s not as elderly as he seems. At the dunking game Max challenged them to, […]

During a battle with Dr. Animo, the Omnitrix is accidentally set to self-destruct. In order to stop it, Ben, Gwen, and Tetrax travel across the vastness of space to track down the Omnitrix’s creator, Azmuth.

As Ben and Gwen are planning Max’s birthday on the shore of Horse Thief Lake, a mysterious stranger appears and kidnaps her, so Ben follows her into a strange portal. When the dust settles, Ben suddenly realizes he is twenty years old in the future, where humans and aliens live peacefully. Ben then learns that […]

Ben and Max drive to a retirement center to visit their Aunt Vera, but find out that evil shapeshifting aliens called the Limax are kidnapping the residents to eat them later and taking their form to replace them.

Grandpa Max takes Gwen and Ben to a music festival in Chicago to see his favorite old time band, Shag Carpeting, but the event is interrupted by a weather-controlling robot called S.A.M. Ben uses Four Arms to send shockwaves to the robot, eventually destroying him.

With his wounds finally healed, Vilgax decides to personally retrieve the Omnitrix. He contacts Ben in a dream, which worries Max. Ben ignores Max’s warnings not to use the Omnitrix and flies off to Rapid City, where Vilgax captures Ben and brings him aboard his spaceship. Max retrieves weapons from a secret base in Mount […]

Straying from Max after an argument for sneaking into the new Sumo Slammer game at a hotel in New York City, Ben meets and befriends Kevin Levin, an 11-year-old juvenile delinquent who can absorb energy. Their first misadventure forces Ben to reveal what the Omnitrix is capable of. Kevin suggests that they team up, but […]

During a trip to Yellowstone National Park, Ben discovers the eleventh alien on the Omnitrix, Cannonbolt. At the same time, a meteor crashes nearby unleashing a giant, tick-like alien called the “Great One” that intends to devour Earth. Ben easily defeats the worshippers, but the Great One turns out to be impervious to the original […]

During a visit to a Navajo village in New Mexico, owned by Max’s old Plumber partner Wes Green, Ben falls in love with Wes’ granddaughter Kai, while a wolf-like creature appears in a flash of purple lightning. Wes believes it to be a Yenaldooshi, or Navajo werewolf. It stole and ripped the receiver. Wildvine fights […]

During a trip in St Louis, Ben and Gwen meet a female alien named Xylene, who locates the Omnitrix and confronts Ben under the impression that he had stolen it. But when Max comes to defend them, he and Xylene recognize each other as old comrades and sweethearts. The two reminisce later that night, and […]