Ben is tasked with cleaning the Rust Bucket, but when he is tricked into letting the villainous and vile Fly Guys steal it, he must chase them down before they create an unstoppable maggot monster. Air date from Australia
Ben, Gwen, and Max's trip to Niagara Falls is cut short by the horrid Hydromanders - creatures menacing them and their fellow tourists. Air date from the UK and Australia
While winning big on a Sumo Slammers video game, Ben gets the idea to win a wrestling match for real until an intimidating wrestler named Iron Kyle decides to make it a true challenge. Air date from the UK
Ben and Gwen's camping trip is interrupted by the emotionless Weatherheads - Gust-o, Hail-o, & Shock-o - but a malfunctioning Omnitrix firing out a mishmash of aliens may not be the forecast for success. Air date from Australia
Ben must overcome his fear of squids when the Steampunk super villain Steam Smythe attacks a construction site of Grandpa Max's favorite pier. Air date from the UK
While trying to film his own indie film, Ben accidentally allows the Bug Gang to go free and when he takes the fight to their hidden lair, Ben has to take on their narcissistic leader - the Ant Queen. Air date from the UK
Ben and Gwen are turned into babies by a weird nanny who wants to turn the world into a day care. Air date from the UK
While chilling at a monastery with a no-noise policy, Ben can't keep quiet and accidentally awakens a dangerous Dragon hidden in a secret chamber below the hallowed halls - a job that might be too much for even Diamondhead. Air date from Australia
When a wizard cos player gets his hands on a real magic wand at Comic Con, Ben enlists the help of Gwen (as Lucky Girl) to help stop Hex from retrieving it by tricking the wicked warlock into thinking she is a possessor of powerful magic herself. Air date from Australia
Ben stumbles into Dr. Animo's secret lab - now ruled by his superior mutants, the Alphas - and must help the lesser animals escape while stuck as Stinkfly. Air date from the UK
Ben is teaming up with Max's old colleagues to stop the insane Clown Zombozo. Air date from the UK
Gwen, Ben and Max encounter a family who are kind of their mirror selves. Air date from Australia
The Tennysons visit Fort Know, but it does not last long till Ben has to fight a monster. Air date from the UK
In the heart of Silicon Valley, Ben has to stop Victorian villain, Steam Smythe, from getting an incredible power source sealed in a Tesla time capsule. Air date from the UK and Australia
Dr. Animo returns with his newest invention, the 'Animerger'. Air date from the UK
No one believes Ben when he insists that one of the other patrons, waiting in line at the World of Wet Water Park, is the nefarious Frightwig, disguised as a common girl called Frida. Air date from the UK
A man attempting to be a hero ends up misusing his abilities, and Ben has to stop him. Air date from the UK
Ben and Gwen decide to race against LaGrange when he crashes a race. Air date from the UK
The group visit the Buddy's Vision Of Tomorrow exhibit, where Steam Smythe hopes to take a secret weapon to rule the world. Air date from the UK
Hex returns for the large spellbook Grimoire of Archamada which contains a high-level spell that will make him more powerful than ever. Air date from the UK
While golfing, Ben must face a biker gang of mutated groundhogs. Air date from the UK
When Ben puts out a fire as Wildvine, a trio of alien chiefs decide to eat him for lunch. Air date from the UK
Ben finds a rare map in the historical village Oldeville. Billy Billions wants that map so he challenges Ben with his high-tech drones. Air date from the UK
When Ben interferes with malicious magician Hex's quest for the earth-moving Titan Gloves at a swap meet, he switches bodies with Gwen forcing him to walk a mile in her shoes and vice-versa! Air date from Australia
Ben and Gwen want to stay awake in Adrenaland, a theme park that is 24/7 open. Thinking that with his alien abilities he can stay awake, things get worse. Air date from the UK
Ben, Gwen and Max stop by the graveyard set of a movie, The Unalivers. Before long, Ben discovers its leading role, Michael Morningstar, is a energy-absorbing vampire. Air date from the UK
When a new enemy causes Gwen and Max to become super-lazy, it's up to Ben to snap them out of it and finally get serious in order to put things back to normal. Air date from the UK
Gwen and Ben are excited to attend an Earth Day EDM concert in Portland until the show is hijacked by the sound/music/audio-manipulating villain, Lord Decibel. Air date from the UK
Ben hangs out with his weird former-babysitter named Penny when they arrive at a pig festival while Maurice and Sydney create a helium weapon for their next big heist. Air date from the UK
Zombozo returns with the Circus Freaks, (Frightwig, and 2 new members, Thumbskull and Acid Breath) with a new plan to turn everyone into clowns like him. Air date from the UK
During a hunt for the fabled 'Forgeti', (who Gwen is fascinated and obsessed with), Ben and Gwen face Dr. Animo once again when he kidnaps Max for his latest experiment. Air date from the UK
When Maurice and Sydney accidentally split Max into 100 dumb clones of himself, Ben must find a way to switch him back without getting divided as well, while Gwen is forced to babysit the Maxes. Air date from the UK
Ben wants to earn some money by mowing Bob's lawn. He rebuilds the lawnmower into a super fast-mowing machine, but in doing so he angers the little stubborn gnome neighbors. Air date from the UK
Ben's favorite cartoon character, Xingo, comes out of TV into the real world when Upgrade tampers with the TV satellite. Air date from the UK
Ben needs to pretend that he is not scared when staying in a haunted hotel. Air date from the UK
Touring Yellowstone National Park, Ben uncovers a plot by Lagrange who wants to digout an old treasure from below the national park. Air date from the UK
Ben's trip to Portland with his family is interrupted by the arrival of a brand new, eleventh alien, Gax, as he fights another one of Dr. Animo's monsters. But when the Omnitrix starts behaving strangely, Ben begins to transform from one alien to another without being able to stop. Air date from the UK
As the Omnitrix is ​​still uncontrollable, Ben asks a mysterious friend of Max to repair it. But when three bounty hunters, Sixsix, Kraab, and Tetrax land to recover the watch, Ben has to try and fight them despite his current predicament. Air date from the UK
Ben heads far into the forest to prevent his unpredictable transformations from causing damage. Meanwhile, Vilgax, who seems to be the same species as Gax, lands nearby. The latter helps Ben discover his powers, but he quickly realizes that this new friend is in fact an opponent. Air date from the UK
After his meeting with Vilgax, Ben continues to transform rapidly without stopping or be able to revert to human form. While Vilgax tries to take the energy of a volcano to recharge his ship and return home, Ben gets the idea to "update" the Omnitrix and thus save the planet from his enemy. But what did he do exactly? Air date from the UK
On a visit to Cape Canaveral, the Tennyson Trio attend the launch of an experimental space plane, but when Vilgax hijacks the ship, Ben must stop him from weaponizing the shuttle. Air date from the UK
After stumbling upon a cute cat-dog-rabbit creature hybrid, or Cadobbit, Ben ignores Grandpa Max's advice and sneaks the animal onto the Rust Bucket. Air date from the UK
During the Biggie Box sale, Ben enlists Simon Sez to help him find Max and get back to the register with his toys before the sale ends and Billy Billions buys them instead. Air date from the UK
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 replacement. Air date from the UK
After their attempt to get a photo with every storefront mascot is foiled, Ben and Gwen sneak out at night to get their photo taken with the wooden bear totem known as Yawk. Air date from the UK
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 Ben's fears to life. Air date from the UK
When the Rust Bucket 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. Air date from the UK
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. Air date from the UK
Ben is trying to save a city from a mudslide when Vilgax shows up with a warning about a new alien coming out of Omnitrix. Air date from the UK
The new alien has dangerous powers, and that worries Ben more and more. Air date from the UK
During a live feed of a 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. Air date from the UK
Ben and Gwen must save the drive-in when the evil magician Hex brings a movie monster to life. Air date from the UK
Ben and Gwen are in a highly competitive paper airplane war, but when alien-tech drones bombard the Rust Bucket, the cousins must work together to ground the aerial attack Air date from the UK
On their trip to Adrenaworld West, Ben takes a detour on a jungle cruise and finds himself hunted by the evil Tim Buktu. Air date from the UK
While sightseeing at the Geyser Gulch National Park, the Tennyson trio uncovers Steam Smythe's steam-powered generator and must shut it down before it overloads the power grid. Air date from the UK
When Max enters a pancake eating contest at the famous Pancake Palace, Ben finds the Bugg Brothers and must stop them before they obtain an endless supply of Pancake Palace pancakes. Air date from the UK
During a routine trip to the DMV, Max takes a driving test to renew his license, but a disguised Zombozo hijacks the role of instructor. Air date from the UK
Ben and Gwen volunteer for a day at the Repto Ranch. There they meet the evil King Koil, who takes control of the reptiles in the facility to create an army. Both of them must overcome their fear of snakes and save the animals that the King Koil has released. Airdate from the UK
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. Air date from the UK
When Ben grows impatient with the snail like pace of gardening, he goes Omni-Enhaanced Overflow to pick up the pace and accidentally floods the community rock garden. But once a giant sink hole appears and frees King Koil and his Kimodo Dragon from below, Ben must quickly make up for his mistake and capture the baddies if he is to save the coastal city of Bayburgh. Air date from the UK
Ben, Gwen and Grandpa Max stop in the middle of the Midwest. While Ben makes himself comfortable in the mobile home with his tablet, Max and Gwen go outside to get some fresh air. When Gwen and Max are drawn into the hunt for a Jackalope, a mythical animal that looks like a rabbit with antlers, the mysterious animal soon starts tormenting Ben. But is it real or a trick of Ben's tablet-ladden mind? Air date from the UK
A mysterious alien substance copies Ben's appearance and powers while Ben is visiting a space museum, and quickly assumes the shape of other people, leaving the Tennysons to find a way to reveal who is actually the mysterious substance.
During a trip to the Lake of the Ozarks, Ben and Gwen squabble over Ben's unnecessary half-birthday celebration; when Max gets word of a suspicious rockslide nearby, the cousins must put aside their differences if they are to rescue trapped miners. Air date from Germany
Left to entertain himself, Ben stumbles upon a Xingo arcade game and goes OE-Shock Rock to power it up; when the game receives too much juice, Xingo leaps out into the real world. Air date from Germany
While Gwen listens to a lecture on the Transcontinental Railroad, Ben sneaks away to the gift shop; Gwen must relay the information she learned on the train to help Ben escape the Bounty Hunters.
When Ben and Gwen visit Fort Knox, the villainous Charmcaster appears, seeking revenge for Michael Morningstar; Gwen faces off against Charmcaster to prove her worth to the team.
Max tries to be with Ben and Gwen before sunset at the Four Corners Monument, but suddenly heavy fog descends on the street and the motor home is attacked.
While Gwen and Max are enamored by wintertime fun during the summer, Ben isn't interested until the Weatherheads attack, intent on feeding off the emotional energy caused by destroying the town.
Ben, Max, and Gwen say Ben might be a better hero if he could act alone, but Vilgax teams up with Zombozo and creates a huge monster to hypnotize the whole world.
Ben is shocked to discover that Steam Smythe has built steampunk robots capable of masquerading as and matching Ben's aliens, hoping to discredit the hero's ever-growing popularity and simultaneously helping his crusade against modern technology.
When Ben and Max get into an argument, Ben goes Heatblast to blow off steam against Max's wishes; Dr. Animo spots him and subsequently turns Max into a chicken.
As team Tennyson admires the modern train station, Ben sniffs out one of Steam Smythe's robots holding up the line. Once the fed up villain tricks Ben into accepting a duel, the fate of the Omnitrix hangs in the balance. Airdate from Australia
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.
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.
After a series of recurring nightmares affect his sleep, Ben refuses to open up to Max and Gwen about what's bothering him. Before long, the entire team is trapped in his nightmares as well, putting them up against Zombozo in a nightmare world. Airdate in Australia
As Team Tennyson prepares their boxcar for an upcoming race, Ben's hearing voices and is unable to go Upgrade to enhance his car, but once the race is interrupted by a mysterious Warbot, Ben must overcome the voices inside his head if he is to defeat the giant adversary.
After defeating the Warbot and discovering Vilgax inside, Ben's "secret voices" only worsen and begin affecting his sleep, but once Gwen discovers a sleepwalking Ben using missing items from the campsite to create his own massive Junkbot, it is up to Ben to stop his own creation.
After the Junkbot shoots the Omnitrix and it begins glowing neon-blue, an imprisoned Vilgax explains it is now a gateway through which the Fulmini Empire will invade Earth, but the only way to stop them is from within the Omnitrix, so Ben must team up with the ultimate baddie if he is to save his planet.
While inside the Omnitrix, Ben and Vilgax must work together if they are to close the gateway, but once the Fulmini leader - the High Override - appears, even that might not be enough. Luckily, help arrives in the form of a being calling itself Glitch!
While Ben struggles to avoid the High Override's mind control, Max and Gwen enter the Omnitrix to lend a hand, but once they find Ben is not who he seems, Max and Gwen must pull out all the stops if they are to get Ben back in time to save the planet.
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.
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" doppelgänger of Cannonbolt— Wreckingbolt!
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!
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!
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!
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's recreational drive in the Rustbucket takes a turn when the Rustbucket morphs into a monster.
Team Tennyson wonders what the Bugg Brothers are up to when the group runs into the villains while vacationing at the Chrysalen Institute.
After a battle with Kevin gets cut short, Ben turns his attention to one upping Gwen at Space Camp; Kevin returns with his sights strangely set on his cousin.
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.
Team Tennyson discovers a Hartfield-McJoy re-enactment 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.
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, he 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!
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!
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!
When Team Tennyson's trip takes them to Scotland, they plan on visiting the various locales of Scotland, but their plans are foiled by the Fogg from "Fear the Fogg", but without Overflow, Ben must devise a new way to defeat the living weather pattern.
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, and showcases three new forms based on those Ben has lost: Thornblade, Undertow, and Dark Matter. How will Ben defeat the corrupted versions of aliens he can no longer use?
When Ben and the others take a trip to Paris, Ben, impatient and uninterested, ends up in the clutches of Zombozo, who hypnotizes into being unable to speak, forcing him to act like a mime, much to Ben's disgust.
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 chases after him across the rooftops.
Tim Buktu returns, seemingly reformed after saving people from a dragon in the streets of Tokyo. But the Tennysons suspect there's more to Tim's actions than meets the eye (dragon's eye, that is).
In front of a biggie box in Japan, Ben waits in an eternally long line for the release of Cyber Slammers, the brand new Sumo Slammers video game. Soon Ben has to save the whole store - and not in front of the gaming enthusiastic customers, but before Steam Smythe, who wants to equip a big Mech-suit with Steam Punk powers!
While Ben and his family want to visit the famous Big Ben, the Bugg brothers once again set up a totally crazy plan: they want to shrink the Big Ben bell to steal it!
Ben, Gwen and Grandpa Max walk along the Great Wall of China. But their adventure is almost spoiled by racers LaGrange and Vin Ethanol, who want to try a daredevil jump over the wall.
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!
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?! Forever Knight and a group of super-baddies by his side are close to conquering all of history.
Ben is the guest of honor at an upcoming Gala, but when the cirque entertainment turns out to 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!
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!
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!
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.
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!
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.
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.
Zombozo hypnotizes Grandpa Max's entire baking class and puts them under his spell.
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.
Team Tennyson travels to a ski resort for some fun and good times.
Ben's jealousy has him convinced he has to out-do Kevin any way he can.
All Ben wants to do is stop Queen Bee from robbing a bank.
Charmcaster uses a miscommunication spell to drive a wedge between everyone.
Ben and Gwen look for the infamous Bojamboo and discover that it's actually the Forgeti; Ben and Kevin reverse roles after being blasted with the Forgeti's forgetfulness mist.
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 time.
When Kevin convinces Steam Smythe to adopt a modern approach in fighting Ben, the young hero must resort to old-fashioned thinking to save the day.
Ben and Gwen's social media battle with Kevin 11 quickly escalates into an all-out war in real life.
Team Tennyson visits the monuments of Chichen Itza, but when Ben learns about the possible existence of a mythical creature, the Quetzalcoatl, the hero takes it upon himself to find the feathered serpent himself.
Team Tennyson help transport a caged Quetzalcoatl through the Yucatan jungle, only to encounter a saboteur, LaGrange, who hijacks the precious cargo and leads our heroes on a high-octane off-road chase!
Team Tennyson's quest for the best pizza in Rome leads them to the Bugg Brothers and their latest culinary caper, complete with stolen recipes, kidnapped chefs, shrunken landmarks, and a high-speed chase around the Eternal City.
On vacation in Rome, Gwen takes Team Tennyson on a self-guided tour of the many ancient sites, but when a distracted Ben accidentally stumbles upon Queen Bee's monumental heist, the hero must work together with his family if he is to save the city from being sacked for the first time in centuries!
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.
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!
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!
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.
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!
Ben gets a tough lesson on knowing his limits when he competes in a grueling obstacle race, made even worse by the Weatherheads!
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!
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!
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.
While in Tokyo, Team Tennyson comes face to face with a horrible secret, Japan's hottest new restaurant is being run by the Bugg Brothers as a nefarious scheme to make loads of money off an unsuspecting public.
While on a visit to the Sumo Slammers Amusement Park in Tokyo, Team Tennyson gets to watch a genuine sumo wrestling match as part of the Global Games, but when the mischievous Twain Twins crash the event to avenge their mother's medal snub years earlier, Ben must think things through if he is to stop the polarizing family!
Ben and Gwen are stoked to enter a skating competition, but when Nanny Nightmare shows up to teach the skater kids some manners by turning them into babies, it's up to Team Tennyson to up their game if they are to have any chance at saving the day.
When Hex mistakes an exclusive magic club for a top-secret Wizard society that snubbed him, Ben has to figure out how to work around the club's strict code of conduct to stop him without getting booted by security.
While on a trip to the dentist's office, a paranoid Ben grows uneasy over the dentist's odd behavior and goes into hiding, but when his suspicions prove right, and the dentist transforms into the monstrous Toothache, Ben must pull himself together if he is to save the day!
When Steam Smythe 'time travels' his way into a Renaissance Faire and kidnaps Max, Ben and Gwen must defeat him without breaking character.
Team Tennyson participates in the inaugural ride of the Sonitrain, the fastest train in the world, but when the conductor turns out to be Lord Decibel, Ben must derail his master plan if he is to save his family and the passengers on board the runaway train.
Ben, Gwen, and Grandpa Max are on the road again and are supposed to be taking in the beautiful sights, but Ben refuses to put his video games away. Only the unexpected return of Xingo can spur him into action and teach him that the real world is just as important as any virtual one!
Team Tennyson go on a tour of the new Biggie Box Candy Store but when Toothache breaks out and kidnaps the owner, it is up to Ben to stop the monstrous dentist.
When Team Tennyson visit Raspberry Park, they get more than they bargained for. What they think are innocent games of chance are a revenge plot by Zombozo to steal the Rustbuggy.
Team Tennyson travel to the new Laser Town VR but when Kevin cheats his way to the top, Ben must team up with former champ Fang if he is going to defeat his souped-up rival.
Ben, Kevin, and LaGrange find themselves stuck "outside of time" after the latter hijack a supersonic train with a fault engine, forcing the trio to team up and slow down.
As Team Tennyson stops Dr. Animo from raiding the animal shelter, Ben faces one villain more than he bargained for -- King Koil, now Animo's pet.
After Tim Buktu's live stream is mysterious cut short, Team Tennyson must attempt a rescue mission and break inside the highly confidential Area 55 in order to save him.
In a future where an adult Gwen Tennyson is president and the world is being taken over by the alien horde known as the Xerge, a disillusioned Ben 10000 is called out of retirement to recruit his 10-year old version from the past.
When Ben meets a young Generator Rex on the run from a hostile Providence, he must work through a series of misunderstandings, and defeat the dark wizard Hex in order to save the world from a malfunctioning Omnitrix infecting the world's human population with alien DNA.
The Tennysons are attacked by a villainous dimension-hopping Omni-alien known only as Alien X. With help from a parallel universe version of Max, they bring multiple alternate Bens and Gwens together to form an alien hero army and combat this threat.
Ben uses Upgrade's form to show off on the skateboard.
Ben uses Wildvine's form to show off his dance moves.
Ben uses DiamondHead's form to show off his dance moves.
Ben uses Cannonbolt's form to do the perfect cannonball.
Ben uses HeatBlast's form to pop popcorn.
Ben uses XLR8's form to set a speed record.
Ben uses Four Arms' form to win a jumping contest with Grandpa.
Ben uses Overflow's form to meet a whale.
Ben uses Grey Matter's form to stop Grandpa's snoring.
Ben uses Wildvine's form to compete in a chore challenge with Gwen.
In Stinkfly's form, Ben accidentally gases Grandpa and himself.
Grandpa and Overflow test an epic waterslide.
Ben uses Upgrade's form to upgrade the AC.
XLR8 is challenged to race himself.
Cannonbolt attempts beach bowling.
Heatblast gets a burp review.
Four Arms makes armpit farts.
Grey Matter challenges an action figure.
Stinkfly pranks Gwen and Grandpa with stinky sandwiches.
Diamondhead helps Gwen light a campfire.
Discover Fours Arms from the planet Khoros!
Discover Diamondhead from the planet Petropia!
Discover Heatblast from the planet Pyros!
Discover XLR8 from the planet Kinet!
Discover Grey Matter from the planet Galvan Prime!
Discover Upgrade from Galvan Prime's moon, Galvan B.
Discover Cannonbolt from the planet Arburia.
Discover Wildvine from the planet Flors Verdance.
Discover Overflow from the planet Andromeda!
Discover Stinkfly from the planet Lepidoptera!
A blast from Ben's past returns to do double the damage on Team Tennyson and planet Earth itself, forcing Ben to go interstellar to save the day.
