When Ben and Gwen try to create a cooking video, Kevin starts trying to gain his own following with crackpot conspiracy theories and encouraging the consumption of junk food. The social media war resulting from the two shapeshifters soon starts to escalate into real world conflict.

Team Tennyson travels to Wheeler, “the liveliest mining town on Route 66”, but when Ben becomes paranoid that the Forever Knight is out to get him, he must try to convince his family while also stopping his new foe from destroying the town.

Ben is the guest of honor at an upcoming Gala, but when the cirque entertainment turns out to be a disguised Zombozo, Ben must not only defeat the evil clown but his mysterious new sidekick, Pirouette!

During one last stop by a toy store before Ben, Gwen, and Grandpa Max's maiden voyage across the Atlantic, Ben runs into an old bully, Kevin 11, who now has new powers. He's able to transform into aliens just like Ben, such as the "bootleg" doppelganger of Cannon-bolt—Wrecking-bolt!

Team Tennyson stops in at a fringe family reunion, and Ben encounters a whole lot more than kooky cousins— namely, Kevin and the Bugg Brothers, whose latest invention sparks a series of head-swaps between all parties.

Ben and Gwen's recreational drive in the Rustbuggy takes a turn when Glitch bonds with part of Kevin 11's version of 'Upgrade' named Bootleg. Not only does this cause the Rustbuggy to mutate into a metallic monster, but it makes Glitch become a speed demon who kidnaps Gwen!

At a local swap meet, Ben instead sets his sights on a Sumo Slammer collectible, but when Kevin takes it for himself, our hero must get it back by overcoming Kevin's secret weapon: an 11th alien named Bashmouth.

Forever Knight finally assembles his Round Table of young but powerful Knights, including Ben, in order to conquer all of history.

During a drag race, Ben hopes to stay neck and neck with Vin Ethanol and La Grange as XLR8, but when his watch keeps shorting out, our hero must get creative if he is to keep up with his fast and furious foes.

After an encounter with the Forgeti, Ben and Kevin end up with the others' phones, causing Ben to turn into a selfish punk and Kevin into a hero. However, have they truly changed alignments or are their real personalities ready to resurface?

During medieval times, Team Tennyson must fight to remember that they're not in the past at all, but actually at a Renaissance-ques fair, where Zombozo has hypnotized its guests into thinking they live in the past.

While Phil and Grandpa Max tune-up the Omni-Copter, Ben takes the Rustbuggy off road, but when he is suddenly captured by Tetrax, our hero must not only escape but avoid the wrath of the double-crossed Kraab and Sixsix!

When Grandpa Max’s engineer buddy Phil Billings gifts Team Tennyson the Omni-Copter, a state of the art flying vehicle that can transport the Rustbucket for overseas adventures, Steam Smythe takes to the skies to ground Ben and company’s first test flight; but unbeknownst to our heroes, Smythe was sent to battle Ben’s latest alien forms by a mysterious, powerful enemy: the Forever Knight.

Team Tennyson discovers a Hartfield-McJoy (a parody of the Hatfield-McCoy feud) reenactment in the cornfield next door, but when Hex resurrects the ghosts of the real feuding families, Ben must find a way to bring them together in order to save the day.

When Ben and the others take a trip to Paris, Ben, impatient and uninterested, accidentally gets himself locked out of the Omni-Copter. To make things worse, he can't communicate with the people of France, and Ben ends up in the clutches of Zombozo, who hypnotizes him into being unable to speak.

Forever Knight finally assembles his Round Table of young but powerful Knights, including Ben, in order to conquer all of history.

During their visit to the Twin City, Ben and Gwen sign up for some Laser Town awesomeness, but when Ben is teamed up with Kevin, the two must overcome their differences if they are to end up on top, especially since Gwen has been paired with the mysterious Fang. To make things worse, a hit from a laser causes Kevin to be trapped in the form of his version of Four Arms named "Quad Smack", and he needs to find a way to fix his Antitrix in order to change back.

When Zombozo hypnotizes Grandpa Max's baking class, it is up to Ben and Gwen to clean up the mess, but it gets even messier when Zombozo reveals that Kevin has become his new bodyguard.

In Aspen, Colorado, Ben, Gwen, and Grandpa Max are on a hike to find the Forgeti, but when they realize they've stumbled upon Billy Billions own "Winter in July" ski resort, Ben must battle Billy, with an assist from the Forgeti itself.

Team Tennyson finds out about their British ancestry, so they visit their relative's estate, but mysterious events convince Ben that the place is haunted. However, it turns out that Kevin Levin has followed them to Britain, and showcases three new alien forms based on those Ben has lost: Thornblade (Wildvine), Undertow (Overflow), and Dark Matter (Grey Matter).

While Ben and his family visit the Big Ben Clock tower, the Bugg Brothers once again set up a crazy plan: they want to shrink Big Ben's bell to steal it!

Team Tennyson's thrift store shopping is ruined by the latest high-speed heist of LaGrange — who is now aided by a super-fast electromagnetic racing car — and Ben must convince Kevin 11 to help stop the speed demon's globetrotting robbing spree.

After traveling to Tampa Beach, Florida, Team Tennyson hopes to get some much-needed rest & relaxation, but the Weatherheads have other plans that Ben must thwart: a solar powered tower so that they never worry about losing power.

After a battle with Kevin gets cut short, Ben turns his attention to one-upping Gwen at Space Camp. But, when Kevin returns with his sights strangely set on his cousin, our hero discovers who is really behind it all: Charmcaster!

Team Tennyson checks out a Samurai Museum in Tokyo. However, Ben finally comes face-to-face with the Forever Knight when he steals a valuable sword from the museum and starts a chase across the rooftops.