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 […]

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 […]

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.

Ben, Gwen, and Max, along with Cooper, use the Plumbers’ Mount Rushmore installation to mount a final stand against the Forever King’s forces. Max discovers that the Forever King was once a plumber named Driscoll who was kicked out after hoarding alien technology. Despite their best efforts, they are unable to keep Driscoll from obtaining […]

Distracted by Ben and Gwen quarreling, Max almost hits a young camper named Gilbert on the road. They take the boy back to his camp, Camp Opinicon, only to find no one there. As they investigate the premises, they find two more children, twins named Andy and Mandy, who are hiding from something that caused […]

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 […]

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.

Ben has been having strange nightmares about Ghostfreak. During a tour of an academy school Gwen wishes to attend, Ben sees and hears Ghostfreak everywhere. When Frightwig, Acid Breath, and Thumbskull show up, Ben activates his Omnitrix; however, it transforms him into Ghostfreak. After a vicious battle, Ghostfreak escapes from the Omnitrix. Ghostfreak removes his […]

Ben returns home after the summer vacation ends and is told by Max that he must keep the Omnitrix a secret. Ben gets the chance to use the Omnitrix when Vilgax attacks, looking to take the device from Ben. All four Tennysons fight off Vilgax’s drones running amok in the city. When Vilgax appears again, […]

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.

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 […]

While visiting Washington, D.C., Heatblast escorts a mother and son safely out of their burning home, then pursues the jewel thieves responsible for the blaze in the Rust Bucket. However, the Omnitrix shuts down to recharge from overuse right when he is about to arrest them, leaving Ben annoyed of being denied credit for their […]

To teach Ben and Gwen the value of hard work, Max takes them to a family farm owned farmer Joan Maplewood in Dairyville, South Carolina. During dinner there, Joan’s son Todd tells Ben and Gwen of a mysterious mummy that had recently arrived in a flash of purple lightning that sparks their curiosity. The two […]

During a trip to San Francisco, the Tennysons discover that doppelgangers of Ben’s aliens are committing crimes around the city. Ben encounters the imposter and discovers that it was really Kevin; their last battle has given Kevin the ability to transform into the various aliens of the Omnitrix. Kevin leaves Ben to pay for his […]

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 […]

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 […]

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 […]

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 […]

In an alternate future, Ben’s son Kenny is celebrating his tenth birthday, and to commemorate the occasion Ben gives him an Omnitrix of his very own. Kenny soon befriends a boy named Devlin, and the same night Ben’s old foe Kevin 11 attacks their home looking for the Null Void chamber. Unable to locate the […]

While visiting the Mega-mall-opolis in Bloomington, Minnesota, Ben and Gwen watch a hypnotist perform. Gwen volunteers Ben as a test subject, and the host, Sublimino, successfully hypnotizes him. When asked to act like an alien, Ben naturally turns to the Omnitrix and almost changes in front of the audience. Even though he is stopped by […]

When a television show called Super Alien Hero Buddy Adventures shows up, Ben gets angry and demands credit since it stars cartoon versions of Fourarms, Heatblast, and Wildmutt. Furthermore, it has replaced his favorite show, Kangaroo Commando. It just so happens Ben and Gwen are visiting Planetary Studios in Hollywood at the time, so he […]

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.

A shuttle launch at NASA is interrupted by a purple lightning storm, which attracts the attention of the Tennysons, who hope to discover the origin of the alien werewolf and mummy. While at NASA, Ben runs into an ill-tempered scientist named Dr. Viktor. Surveillance tapes associate him with the purple lightning storm, and he is […]