Ben 10: Season 4

And Then There Were 10

23min - Ben discovers the Omnitrix, and when it attaches itself to Ben's wrist, he discovers that it allows him to become any one of 10 alien heroes.

Washington B.C

23min - Ben must use the Omnitrix to battle Dr. Animo and his transmorphed dinosaurs, which are running rampant in Washington, D.C.

The Krakken

22min - While stopped at a lakefront campsite, Ben has a chance encounter with a Loch Ness-type sea monster called a Krakken, controlled by an evil poacher.

Permanent Retirement

22min - Grandpa, Gwen and Ben visit an elderly relative, only to find that her retirement community has been overtaken by a shape-shifting alien.

Hunted

22min - Three alien bounty hunters are hot on Ben's trail. But one of them is a secret agent trying to make sure the Omnitrix does not fall into evil hands.

Tourist Trap

22min - While messing with the World's Largest Rubber Band Ball at a tourist trap, Ben accidently releases some mischievous electrical creatures.

Kevin 11

22min - After a big argument with Max, Ben rebels by going out on his own in the Big Apple and makes friends with Kevin 11, who has plans for the Omnitrix.

La Alianza

The Alliance

22min - As Fourarms, Ben works to thwart an armored truck robbery by a tough female gang leader named Joey, who delivers a disturbing message from Vilgax.

Last Laugh

22min - Ben's fear of clowns emerges at an unfortunate time when our heroes stumble upon a wicked circus with a "psychic vampire" clown named Zombozo.

Lucky Girl

22min - Ben battles an evil sorcerer whose power emanates from mystic charms, one of which turns Gwen into her own superhero named Lucky Girl.

A Small Problem

22min - When Ben is not allowed on an attraction at a water park because he's too short, he decides to go alien to get even with the ride's attendant.

Side Effects

22min - Ben catches a cold and the symptoms wreak havoc on his alien heroes. To make matters even worse, he has to battle a creature made from cockroaches.

Secrets

22min - Grandpa Max's mysterious past comes to light when Vilgax shows up on Earth in search of the Omnitrix. The family must work together to defeat him.