Out to Launch
While on a visit to Cape Canaveral, the Tennyson Trio are present for the inaugural launch of an experimental space plane. When Vilgax commandeers the ship, Ben must stop the baddie from weaponizing the shuttle before the countdown hits zero.
Battle at Biggie Box
Ben and Billy Billions go head to head over a Sumo Slammer Set sold exclusively inside the world's largest shopping center, only to find six-year-old Simon Sez has gotten it first! A battle royal ensues inside a store that seemingly has everything except an easy to find exit.
Aboard the SS Pettigrew on its final voyage, Ben must not only battle seasickness but Steam Smythe, who looks to use his mechanical creatures to sink the steamship's modern replacement and the passengers with it!
Mayhem in Mascot
After their attempt to get a photo with every storefront mascot is foiled, Ben and Gwen sneak out at night to get their photo with the wooden bear totem known as "Yawk", only to find he and the other mascots have come to life!
When a cavity forces Ben to the dentist his day gets even worse when the malevolent magician Hex uses a nearby dream catcher to bring our hero's fears to life and transports them both to a nightmarish dreamscape.
When Max dozes off before a double feature, Ben and Gwen are left to save the drive-in by themselves as the evil magician Hex brings the movie monster "That" to life, and unleashes him on the unsuspecting moviegoers.
During a routine trip to the DMV, Max takes a driving test to renew his license, but when a disguised Zombozo hijacks the role of instructor, Ben goes alien to stop the baddie and save their family road trip.
As the Tennyson trio dig up dinosaur fossils in the Badlands, Ben is unaware that Vilgax and Dr. Amino have teamed up to steal alien DNA from within the Omnitrix, but once extracted, Vilgax double crosses his fellow villain. Ben must now join forces with the evil doctor to have a chance to defeat the big baddie, but can Dr. Amino be trusted?
Assault on Pancake Palace
When Gwen enters a pancake eating contest at the world famous Pancake Palace, Ben finds the Bugg Bros. and must stop them before they obtain an endless supply of what fuels their creations: Pancake Palace pancakes.
High Stress Express
During a live feed of the new transcontinental bullet train, La Grange enters the picture to outrace the train, but Ben joins in on the fun and will stop at nothing to come out on top!
The 11th Alien
Ben must overcome his doubts and fully embrace his new powers if he is to beat Vilgax and the Weatherheads.
During a trip to the Lake of the Ozarks, Ben and Gwen squabble over Ben's unnecessary "half-birthday" celebration, but when Max gets word of a suspicious rockslide nearby, the cousins must put aside their differences if they are to rescue the trapped miners and uncover who is behind the manmade catastrophe before it's too late: the Bugg Brothers.
Left to entertain himself as Max takes a much deserved nap, Ben stumbles upon a Xingo arcade game and goes OE-Shock Rock to power it up, but when it receives too much juice, Xingo leaps out into the real world and our hero must go toe-to-toe with his favorite cartoon character.
While Gwen listens to a lecture on the Transcontinental Railroad, Ben sneaks away to the gift shop. But once the Bounty Hunters appear and corner our hero, Gwen must relay the information she learned on the train and use it to their advantage to help Ben escape.
Fear the Fogg
As Max attempts to get Ben and Gwen to the Four Corners Monument before sunset, an ominous fog bank engulfs the roadway and forces Max to drive at a snails pace, but once The Fogg comes to life and attacks the Rust Bucket, Team Tennyson must work together if they are to navigate to safety.
After a lull in alien antics, a restless Ben suggests to Max and Gwen that he might be a better hero if he went solo, but once Vilgax enlists the help of Zombozo to build a giant hypno-mechanism to hypnotize the entire world, Ben must rethink his strategy if he is to defeat the super-villain team-up.
Can I Keep It?
After stumbling upon a cute cat-dog-rabbit creature hybrid, or "Cadobbit," Ben ignores Grandpa Max's advice and sneaks the animal onto the Rustbucket, but is quickly in over his head as Dr. Amino's creation turns on him!
Chicken Nuggets of Wisdom
When Ben and Max get into an argument, Ben goes Heatblast to blow off steam against Max's wishes; but once Dr. Animo spots him and subsequently turns Max into a chicken, it's up to Ben to right his wrong if he is to save his Grandpa and stop Dr. Animo.
All Koiled Up
When Ben grows impatient with the snail like pace of gardening, he goes O-E Overflow to pick up the pace and accidentally floods the community garden, but once a giant sink hole appears and frees King Koil and his Kimodo Dragon from below, Ben must quickly right his wrong and capture the baddies if he is to save the coastal city of Bayburgh.
Ben and Gwen spend the day volunteering at Repto Ranch and come face to face with King Koil, but need to quickly overcome their fear of snakes if they are to rescue the released critters and defeat the slithery baddie.
The Charm Offensive
After Ben gets too much publicity for his alien antics in Fort Knox, a jealous Gwen feels unappreciated and looks to ease her pain with ice cream, but once she is confronted by Charmcaster looking to avenge Michael Morningstar, Gwen must prove to herself she's a worthy member of Team Tennyson if they are to survive.
While bird watching at Pinnacles National Park, Gwen and Ben get into a competition of who can spot more birds first, but once a forest fire interrupts their fun, Team Tennyson must hurry if they are to save the bird population and discover who is behind the suspiciously growing fire: Hex!
Ye Olde Laser Duel
As team Tennyson admires the efficiency of a super modern train station, Ben is quick to sniff out one of Steam Smythe's robots holding up the line. Once the fed up villain tricks our hero into accepting a duel, the fate of the Omnitrix hangs in the balance and it's up to Ben to set things right.
Ben Again and Again
After Billy Billions' efforts to carve his face onto Mount Rushmore with a laser are thwarted by Ben, the billionaire brat turns his focus on removing Ben from the Omnitrix, but once he accidentally rips open a rift in space-time, the two must carefully navigate another timeline if they are to return to the present.
When the Rustbucket must tune-up in the same town as Zombozo's latest campaign trail stop, Ben soon discovers the clown is using his speeches to hypnotize then rob the town, and Team Tennyson must stop the baddie from winning the election.
Ben and Gwen are in a highly competitive paper airplane war, but when alien-tech drones bombard the Rustbucket, the cousins must work together to ground the aerial attack and find out who's behind it: the alien conqueror, Vilgax!
On their trip to Adrenaworld West, Ben takes a detour on a jungle cruise and finds himself hunted by the evil Tim Buktu. Our hero must outwit the baddie if he wants to make it off the amusement park ride alive!
The Nature of Things
While sightseeing at the Geyser Gulch National Park, the Tennyson trio uncover Steam Smythe's steam-powered generator and must shut it down before it overloads the power grid or, even worse, causes a massive earthquake that destroys the entire park!
The Sound and the Furry
As Team Tennyson leaves the Frozen Man Festival, Lord Decibel takes center stage to threaten the festival-goers, creating an avalanche if his ransom isn't paid. An over matched Ben must step out of his comfort zone to save the festival from his noisy nemesis!
With the Rustbucket stopped on the Midwest roadside, Ben locks himself inside with his tablet as Max and Gwen enjoy the great outdoors, until Team Tennyson is pulled into a wild Jack-a-Lope chase.
That's the Stuff
While touring a space museum, Ben's excitement multiplies when he learns that recently discovered space stuff is being examined inside the museum's lab. Once the stuff comes to life and the shape-shifting goo replicates our hero, Ben must look within if he is to stop the case of mistaken identity.
While Max and Gwen revel in the holiday spirit of Winter Wonderland, Ben couldn't be more unamused and focused on the toys, but once the Weatherheads set their sights on Winter Wonderland as their next target, our hero must become one with his emotion if he is to save the town.
Past Aliens Present
After Ben stumbles upon a video of Cannonbolt ripping up a computer lab on the internet, Team Tennyson must race to State U to find the imposter; but once Ben discovers it is a steam-punk version of his alien that is terrorizing the campus, Ben must take down the man behind the machine, Steam Smythe!
After a series of reoccurring nightmares affect his sleep, Ben refuses to open up to Max and Gwen about what's bothering him, but once they realize Zombozo himself is behind it, Ben must accept Max and Gwen's help if they are going to put a stop to the terror.
The mysteries of the Omni-Enhancements are solved when Ben battles an alien invasion coming from inside the Omnitrix.
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.
This One Goes to 11
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 Cannonbolt. Wreckingbolt!
Rath of Con
Back stateside, Ben can't get into a cat cosplay competition, Top Tail, without a costume of his own; but when he goes Rath, a new cat-like alien with an attitude, Ben's newfound wild side quickly becomes much more than he bargained for.
A trip to the South Pole goes upside down when Team Tennyson lands on the North Pole instead, but Ben quickly discovers the culprits: Solar & Polar Twain, magnetically-powered scientists who want to hold the world ransom by threatening to reverse Earth's magnetic poles!
Show Don't Tell
Ben, Gwen, and Grandpa Max arrive at a Native American national park to witness the Ayasha Plinths, an ancient Stonehenge-like rock formation. But when the sinister sorcerer Hex arrives, Ben must battle against a beast Hex magically made out of huge rocks!
Welcome to Zombozo-Zone!
During medieval times, Team Tennyson must fight to remember that they're not in the past at all, but actually at a Renaissance-esque faire, where "King Zombozo" has hypnotized its guests into thinking they live in the past!
After an overpass collapses on the highway, Team Tennyson is in a traffic jam along with Simon Sez and family. But when Ben and Simon team up to tackle the gridlock together, Simon only makes matters much, much worse.
After traveling to Tampa Beach, Florida, Team Tennyson hopes to get some much-needed rest & relaxation, but the tempests without a temper, the Weatherheads, have other plans that Ben must thwart: to build a new beach base!
Charm School's Out
During a family cookout at a forest campsite, Charmcaster users her magic to switch places with Gwen, but when Ben catches “Charmcaster” sneaking about, he attacks, unaware it’s actually his cursed cousin!
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.
Ben hops into the Rustbuggy for a driving lesson along the sand dunes of Cape Cod, but he takes a freaky switchback turn when the Rustbuggy is mutated into a motor-monster by Bootleg, another alien transformation of Kevin 11, with powers similar to Upgrade!
Buggin' the Buggs
Team Tennyson travel to the Chrysalen Institute for some hot yoga and good vibes, only to find that the Bugg Brothers are on vacation, too, but are the sneaky insectoids really on holiday, or just cooking up yet another silly, yet high stakes scheme?
After a battle with Kevin gets mysteriously cut short, Ben turns his attention to one upping Gwen at Space Camp. But, when his arch-nemesis, Kevin, returns with his sights strangely set on his cousin, our hero must uncover who is really behind it all, Charmcaster!
When attacked in the jungle, Team Tennyson is saved by a toddler who looks eerily similar to Tim Buktu, but when they discover it really is a pint sized version of the nefarious globetrotter, Ben knows there's another threat looming, Nanny Nightmare!
Them's Fightin' Words!
After enjoying some local corn, Team Tennyson discovers a Hartfield-McJoy 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 if he is to save the day!
Mutiny for the Bounty
While Phil and Grandpa Max tune-up the Omni-Copter, a restless Ben takes the Rustbuggy off road, but when he is suddenly captured by Textrax and the hunter takes the bounty for himself, our hero must not only escape but avoid the wrath of the double-crossed Kraab and Sixsix!
Team Tennyson discovers that a small village's goats are being terrorized by the legendary Chupacabra, but when Ben realizes it's actually Dr. Animo, our hero must thwart the dastardly doctor before he uses the essence of the goats to power up into an unstoppable form!
After winning a Sumo Slammers Champion belt, Ben returns to the Rustbucket to find his prize in the arms of Kevin, but when his rival hijacks the Rustbuggy instead, our hero must stop at nothing to get back what's rightfully his!
Introducing Kevin 11
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!
Four by Four
During their visit to 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!
Team Tennyson goes international in the Omni-Copter and the first stop is for a hike in the Scottish Highlands, but the weather isn't just bad, it's foggy, and that means one thing and one thing only: the return of The Fogg!
King of the Castle
Ben, Gwen, and Grandpa Max next travel to Castle Bishopbrook to visit a distant relative who's royalty, but when Ben encounters a "ghost" at the haunted home, it turns out to actually be his new rival, Kevin 11, throwing even more twisted aliens his way: Thornblade, Undertow, and Dark Matter!
Speechless on the Seine
While in Paris, France, Ben catches Zombozo robbing the Louvre, but when Zombozo hypnotizes Ben to remain speechless, Ben must navigate a foreign land like a mime in order to stop the criminal clown and his travelling circus.
Team Tennyson checks out a Samurai Museum in Tokyo, where Ben is too impatient to wait out the Calligraphy experience for the more exciting sounding Samurai one. But when a dangerous Samurai sword is stolen from the exhibit, Ben must take on its thief, the new Big Bad in town, the Forever Knight.
Big in Japan
During a tour of the Japanese Robotics Museum, Ben finds hero-gone-wrong Tim Buktu "trying to save" Tokyo from a Dragon. Has Tim finally turned over a new leaf, or is this just another one of his half-baked plans to play the part of hero?
At Biggie Box Japan, Ben waits in an epic line for the release of the latest Sumo Slammers video game, Cyber Slammers, but Ben must save the store not from game-hungry customers, but from Steam Smythe, who wants to retro-fit a massive mech with steam punk powers!
Big Ben 10
When Ben and family go to London to visit the legendary Big Ben, the Bugg Brothers are there to greet them, with yet another outrageously over the top plan of course: to shrink the Big Ben bell in order to steal it!
While visiting China, Ben, Gwen, and Grandpa Max take a trek to the Great Wall, but their adventure is nearly ruined by daredevils LaGrange and Vin Ethanol trying to jump the international monument, and Ben must hop into the Rustbuggy to chase away the fast and furious foes.
When a mysterious electrical storm downs the Omni-Copter at the Equator, Team Tennyson soon discovers Solar & Polar are behind it, but when Ben accidentally combines the two into a more powerful Uni-Twin, our hero must think fast if he is going to save the planet!
The Claws of the Cat
While taking in the sights and sounds of a Rio de Jenaro music festival, Ben bristles at Gwen's suggestion that she be his new sidekick, but when the festival is threaten by the supersonic sound waves of Lord Decibel, our hero must lean on help from some familiar faces: DJ Gpa and Gwen-Cat!
Forever Knight finally assembles his Round Table of young but super-powerful Knights, including Ben? With his squires' help, Forever Knight turns a Particle Accelerator into a Time Machine and sets out to conquer all of history, but a certain hero with a team of 10 aliens on his side has other plans foiling Forever Knight at every twist and turn in time while Grandpa Max, Gwen and Phil keep the rest of the Round Table busy in the present.
After saving a State University Alumni ribbon cutting ceremony, Ben becomes the guest of honor at the upcoming Gala, but when the cirque entertainment turns out be Zombozo, in disguise, Ben must not only defeat the evil clown but his mysterious new sidekick, Pirouette!
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 stuffing their faces with gyros, Team Tennyson makes their way to the real Greece in the Omni-Copter, but when they are suddenly captured by the Forever Knight mid-flight, Ben ends up in a coliseum, where he is pit against old foes: Iron Kyle, Queen Bee, and the Ground Hawgs!
Prey or Play
After receiving a super-exclusive ticket to Adrenaland, Ben leaves behind Grandpa Max and Gwen to enjoy the perks of being the parks only attendant, but when he learns he's not alone, our hero must now contend with the only kid who could afford the price of admission: Billy Billions!
Beware the Scare-Crow
During a visit to the farm of Penny Bennyson's grandfather, Team Tennyson is constantly haunted by a Scare-Crow that's come to life, but when Ben discovers that Aristocrow is behind it all, our hero must defeat Aristocrow's master, the steam-powered Steam Smythe, if he is to save his cousin's farm!
The Night Ben Tennyson Came to Town
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 fam while also stopping his new foe from destroying the town.
And Xingo Was His Name-O
When a new Xingo app mysteriously appears on Gwen's tablet, Ben can't help himself and activates it despite his cousin's disapproval, springing a trap that transports Ben in the animated world and Xingo back in the real world. It's the ol' switcheroo!
Fear in the Family
Ben and Gwen can't wait for the Omni-Copter to arrive at the Great Pyramids, but when bad weather disrupts their flight, they soon come face-to-face with The Fogg and its spawn: The Fogg Family!
Kevin 11 gives Xingo a power up - setting him loose to wreak havoc on other TV shows - and it is up to Ben to stop them both.
Heads of the Family
Team Tennyson stops in at a fringe family reunion, and Ben encounters a whole lot more than kooky cousins namely, Kevin 11 and the Bugg Brothers, whose latest crackpot invention sparks a series of hilarious head-swaps between all parties.
When Zombozo hypnotizes Grandpa Max's entire baking class it is up to Ben and Gwen to clean up the mess, but it gets even messier when Zombozo unveils his new bodyguard: Kevin 11!
Wheels of Fortune
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.
Heat of the Moment
After Ben easily dispatches the Weatherheads, Team Tennyson travels to a ski resort for some fun in the snow but when Ben runs into the Weatherheads yet again, this time they are a force to reckon with, now that Kevin 11 has used his Bootleg powers to unlock their emotional controls!
When Ben sees Vin Ethanol impressed with Kevin's automotive know-how, Ben's jealousy has him convinced that he has to out-do Kevin before the older boy influences Vin to embrace his bad-guy side at a charity race.
A Sticky Situation
All Ben wants to do is stop Queen Bee from robbing a bank, but when Kevin shows up to try and be the hero and take all the glory himself, Ben will need to save the day twice or end up in hot honey.
What Rhymes with Omnitrix?
At a poetry slam event, Charmcaster's reading of Kevin's poetry causes magical trouble for Ben and Gwen, causing mind swaps that have everyone confused as to who's fighting who.
You Remind Me of Someone
Ben and Gwen look for the infamous Bojamboo (the Bigfoot of the South) and discover that it's actually the Forgeti, at the same time as Kevin 11, but when Ben and Kevin are blasted with the Forgeti's forgetfulness mist, they reverse roles and it's up to Gwen and Max to restore them back to normal.
Team Tennyson visits the safety-neutered version of Adrenaland known as "Adrenaland Jr.", only to end up facing off against a bitter Kevin 11, out to destroy everyone else's good, and safe, time.
Steam Fight at the OK Corral
When Kevin convinces Steam Smythe to adopt a modern approach in fighting Ben, our young hero must resort to old-fashioned thinking to save the day.
I Don't Like You
Ben and Gwen's social media battle with Kevin 11 quickly escalates into an all-out war in real life.
Chicken in Chichen Itza
While visiting Chichen Itza, Ben tracks down the mythical Quetzalcoatl, but when he learns it’s actually Dr. Animo’s latest experiment, Team Tennyson vows to transport the creature to safety, only to be derailed by La Grange, who hijacks the precious cargo!
Ben in Rome
While in Rome, Ben’s quest for the best pizza helps them halt the Bugg Brother’s latest culinary caper, but the vacation only gets messier when Team Tennyson stumbles upon Queen Bee’s monumental heist!
Grandpa Max’s alma mater asks him to use the Omni-Copter to transport an important exhibit to an exotic nature reserve, but when the exhibit turns out to be a rare and very large baby moth, Ben must keep Tim Buktu from stealing the moth while learning that sometimes you need to use finesse and not force to solve hard problems.
The Tennysons find themselves stuck inside an inescapable funhouse constructed by Zombozo; Ben goes alien and fights for escape, ultimately proving that behind every illusion, there’s a disappointing secret.
After Grandpa Max’s super smart buddy Phil discovers that a second extraterrestrial item crashed alongside the Omnitrix, Team Tennyson sets off to find the second crash site before someone else does but arrive instead to find nefarious newcomer Breaker One-Nine has already beat them to the punch.
The Monsters in Your Head
Ben and Gwen learn a rumor of an alien invasion happening at the park they are camping at, but when they investigate, they discover a preserve containing a host of mutated creatures engineered by Animo! With the unexpected help of Kevin 11 and his family, Ben proves that the rumors are false, and that truth is stranger than fiction!
Queen of Bees
Ben, Gwen and Grandpa Max arrive in Bismarck, North Dakota for its annual celebration of bee pollination, bringing them face-to-face with Queen Bee and a bold new scheme, forcing Ben to conquer his new fear of bees!
Falls, Falls, Falls
Team Tennyson looks to take in the sights of the Shoshone Falls, but when they arrive to find Steam Smythe siphoning off the water, it is up to Ben to distract the steam punk baddie long enough to allow Grandpa Max and Gwen the time to shut down the hydropower plant and save the Falls.
The Greatest Lake
While visiting Lake Erie, a relaxing day at the beach gets all washed up when Ben, Gwen and Grandpa Max come face-to-face with Hex, and his summer intern, Kevin!
Mud on the Run
Ben gets a tough lesson on knowing his limits when he competes in a grueling obstacle race, made even worse by the Weatherheads!
It's Story Time
After the Rustbucket breaks down, Ben, Gwen and Grandpa Max find themselves killing time at the local town library but soon scramble to out maneuver Hex as he searches for a hidden ancient artifact.
Team Tennyson enjoy the biggest convention in town, but when a gawky costume store employee finds a familiar-looking helmet in the back of the store and tries it on, Ben is faced with the return of an old foe in a new form: Forever Knight!
While visiting Carlsbad Caverns National Park, the Tennyson’s come across the “Bottomless Pit”, a naturally formed pit with no bottom. Ben fights his better judgment to jump in the pit and be the first person to find the bottom, until Kevin 11 shows up and starts to goad Ben into a contest to the bottom of the pit! The natural rivalry is put on hold, however, with the arrival of Breaker One-Nine, who has come to destroy the Caverns!
Tales from the Omnitrix
Team Tennyson trade campfire stories in an anthology-style series that pits Ben against his archrival, Kevin 11, and teaches our hero the power of imagination.
Ben completely ignores Gwen when she takes him to a family fun center. Meanwhile, Frightwig pushes Zombozo back into a life of crime after he ends up becoming a party clown. Now, both Ben and Zombozo will have to learn that you shouldn’t ignore your friends!
Wind Some, Lose Some
At the Mojave Wind Farm in Texas, Max and Gwen plan to set Ben straight on his kooky ideas about how wind works, but when they find the Weatherheads using the towering turbines for their latest nefarious plan, will Ben face facts in time to blow them away?
Ben and Gwen don’t want to go to the CD Library. CDs are for old people. Ew. Once Team Tennyson is there, Lord Decibel traps them inside and demands a ransom. Ben and Gwen find Kevin inside on a potentially nefarious quest of his own, but it turns out that Lord Decibel may have already found the item that they so desperately desire.
Team Tennyson heads to the Okefenokee Swamp to witness the blooming of the Blushing Orchid, something that happens once every one hundred years. But their plans get disrupted when Tim Buk-Tu, trying to make his new ‘reality’ show more exciting, endangers the rare flower and everyone else at the swamp.