Seasons & episodes
4 seasons · 166 episodes
Episode 01
The Filth
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.
Episode 02
Waterfilter
Ben, Gwen, and Max's trip to Niagara Falls is cut short by the horrid Hydromanders - creatures menacing them and their fellow tourists.
Episode 03
The Ring Leader
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.
Episode 04
Riding the Storm Out
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.
Episode 05
The Clocktopus
Ben must overcome his fear of squids when the Steampunk super villain Steam Smythe attacks a construction site of Grandpa Max's favorite pier.
Episode 06
Take 10
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.
Episode 07
Growing Pains
Ben and Gwen are turned into babies by a weird nanny who wants to turn the world into a day care.
Episode 08
Shhh!
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.
Episode 09
Brief Career of Lucky Girl
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.
Episode 10
Animo Farm
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.
Episode 11
Clown College
While tailgating at a State U. homecoming football game, Ben teams up with Grandpa Max's old college buddies to keep the crazy clown Zombozo from robbing the stadium blind at halftime.
Episode 12
Adventures in Babysitting
Gwen, Ben and Max encounter a family who are kind of their mirror selves.
Episode 13
Something I Ate
The Tennysons visit Fort Know, but it does not last long till Ben has to fight a monster.
Episode 14
Steam is the Word
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.
Episode 15
The Beast Inside
Dr. Animo returns with his newest invention, the 'Animerger'.
Episode 16
All Wet
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.
Episode 17
Villain Time
A man attempting to be a hero ends up misusing his abilities, and Ben has to stop him.
Episode 18
Drive You Crazy
Ben and Gwen decide to race against LaGrange when he crashes a race.
Episode 19
Tomorrow Today
The group visit the Buddy's Vision Of Tomorrow exhibit, where Steam Smythe hopes to take a secret weapon to rule the world.
Episode 20
Story, Bored
Hex returns for the large spellbook Grimoire of Archamada which contains a high-level spell that will make him more powerful than ever.
Episode 21
Hole in 10
While golfing, Ben must face a biker gang of mutated groundhogs.
Episode 22
Recipe for Disaster
When Ben puts out a fire as Wildvine, a trio of alien chiefs decide to eat him for lunch.
Episode 23
Rustbucket RIP
Ben finds a rare map in the historical village Oldeville. Billy Billions wants that map so he challenges Ben with his high-tech drones.
Episode 24
Freaky Gwen Ben
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!
Episode 25
Ben 24hrs
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.
Episode 26
Bright Lights, Black Hearts
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.
Episode 27
Don't Laze Me, Bro
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.
Episode 28
Don't Let the Bass Drop
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.
Episode 29
Bad Penny
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.
Episode 30
Zombozo-Land
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.
Episode 31
Forgeti
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.
Episode 32
Max to the Max
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.
Episode 33
Cutting Corners
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.
Episode 34
Xingo
Ben's favorite cartoon character, Xingo, comes out of TV into the real world when Upgrade tampers with the TV satellite.
Episode 35
Scared Silly
Ben needs to pretend that he is not scared when staying in a haunted hotel.
Episode 36
Need for Speed
Touring Yellowstone National Park, Ben uncovers a plot by Lagrange who wants to digout an old treasure from below the national park.
Episode 37
Omni-Tricked (1)
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.
Episode 38
Omni-Tricked (2)
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.
Episode 39
Omni-Tricked (3)
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.
Episode 40
Omni-Tricked (4)
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?
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