Seasons & episodes

Numbuh 2's little brother, Tommy (who is shunned by Sector V) joins forces with a villain, Common Cold.

Two parental villains are stupefying KND operatives around the world; an operative named Chad (Numbuh 274) enlists the help of Sector V.

Sector V tries to destroy all the pianos in a truck with a hamster that acts as Numbuh 4's replacement.

Sector V is put into a "kids zoo" and must unite with the Delightful Children From Down The Lane and get all the other children out of their cages before lunch time to escape being fed to the zoo's cannibal bully.

Numbuh 5 tries to keep the treehouse quiet so Numbuh 1 can sleep.

The boss of Rainbow Monkeys Inc. uses Numbuh 3 to find real Rainbow Monkeys for him.

The Delightful Children from Down the Lane turn to Father for help, and the Kids Next Door are forced into a dangerous showdown.

S2 · E1Operation: C.A.T.S. 2003-10-03 · 11 min＋

Numbuh 4 accidently destroys Numbuh 3's favorite toy, and then lands himself in the clutches of the creepy old cat lady and her billions of cats! Will his fellow operatives save him? And will Numbuh 3 forgive him in time TO save him?

When the drinking age of root beer is raised to 13, the Kids Next Door swing into action, delivering soda to speakeasies for youngsters. But soon the Kids discover the prohibtion's leader, Mr. Fizz, has something even more sinister in store. Can the Kids Next Door stop Fizz from bottling up children everywhere?

After spending a stretch in the slammer for spanking the wrong child, the vampiric villain Count Spankulot vows to use his abilities to help children instead of harm them, and approaches the Kids Next Door with an offer to join them! But when the former Bounty Hunter of Bottoms turns out to be more annoying now than he ever was as a villain, how will the KND get rid of the Pesky Paddler?

The Delightful Children From Down the Lane are holding a social, and the KND are invited! Smelling a rat, Numbah One and the team decide to go for a reconaissance mission - and as the only one without a date, he brings Lizzie along. But when the Delightful Children spring their trap, Lizzie becomes more of a hindrance than ever. Will Numbah 1 prevail? Will his relationship with Lizzie survive?!

Numbuh 5 is sick at home with the flu, and Numbuhs 1 and 2 take it upon themselves to protect her from the enemy. While at her house, her father lets it slip that teenage sister Cree is wearing a training bra! Ever suspisious of teenagers, Numbuh 1 figures that this odd device must be "Battle Ready Armor", and becomes determined to discover the workings behind it. But when the two of them are discovered, can even the Kids Next Door survive the wrath of a humiliated teenager?! And could there be more than meets the eye in this lingerie liason?

On a seemingly routine mission, Numbuh 2 seizes a truckload of disgusting tapioca pudding from a trio of masked teenagers; unfortunatly, when trying to dispose of it, he plants it right in the middle of the treehouse! Now the team is up to their necks trying to clean up the putrid pudding, and the original teen-age owners still want it back! But why? Only Numbuh 2's grandmother knows for su

When Numbuh 4 is sickened by the cutsey "Rainbow Monkeys" double feature movie that the team goes to, he tries to theater-jump into to R-rated "Violence: The Movie," and after several unsuccessful tries, he makes it in disguised as an adult. But triumph turns to tragedy when he discovers that what promises to be a cool film is actually a front for a meeting for practically every villain that the KND have ever faced! And when his diguise fails, will Numbuh 4 escape this sinister cinema and leave room for a sequel?!

It's Numbuh 3's birthday! Her party seems to go well, until the team hears her birthday wish - to lead the team on a mission! Hoping to make her happy, Numbuh 1 quickly makes up a simple task for her - to retrieve a Kid's Meal from the new fast food place, the Burger Frenzy. But Numbuh 3 gets more than she bargains for when she discovers that, in this case, "Kid's Meal" actually refers to the main ingredient of the meal!

The KND learn about evil mustaches taking over the faces.

While on a fishing trip with his overbearing, sousaphone-playing father, Numbuh 1 has to rescue him from a kid seeking a father of his own.

Everbody knows that ice cream comes in three basic flavors - chocolate, vanilla, and strawberry. But Numbuh 5 knows only too well the legend of how the ancient ice cream monks created a FOURTH basic flavor, and hid it away in a hidden temple, where only an ice cream lover with the purest taste buds could ever taste it. But when the Delightful Children steal the sacred Golden Scoop, Numbuh 5 finds herself dragged to the trap-laden temple, where the evil children force her to penetrate its inner sanctum. Will Numbuh 5 prevail in this frozen frenzy and get a taste of the fabled Fourth Flavor?!

It is a clear case of Dr. Jekyll and Mr. Hyde when Numbuh 2's attempt to create a formula to strengthen hamsters causes him to transform into a teenager and back! Thrown out of the treehouse by his unknowing teamates, he seemingly finds solace when he runs into Numbuh 5's evil sister Cree, and she develops a crush on him!

It is a sad day in the treehouse, when Chubbo, one of the KND's power-providing hamsters passes away; and it is saddest for the overly sensitive Numbuh 3, who even maintains a vigil at his grave until the weather proves inclement. But unwise is the one who mourns too long for the dead, because during the dark and stormy night, a gang of ghostly hamster arrive, and drag the terrified Three to the hamster afterlife! Now the team must penetrate the very netherworld to rescue their friend, but can even the KND overcome a mob of restless rodents?!

An operative has apparently reached her thirteenth birthday, and is scheduled for decommission; but on route to the moon base, the transport ship carrying her is shanghied and forced to land. When the local KND arrive on the scene, they now must work with Decommission Officer Numbah 86, a boy-hating brat with a bad attitude! And when the fugitive flees to the Delightful Children's mansion, the

Numbuh 2 and Numbuh 4 visit the grand opening of a cheese-themed restaurant which seems to have a big problem - an appalling lack of cheese! And when 2 reveals that he's brought his own, the source of the problem is revealed, when the operatives are kidnapped by cheese headed ninja, and then dragged before the Cheese Shogun, a mad martial artist who holds cheese to be more valueable than gold. Can 2 and 4 defeat this insane samurai and escape his deadly dairy dojo?!

Numbuh 1 hears word that a ten-year-old progidy has been accepted into a prestigious British College, and fears that the adults seek to remove his brain. With the rest of the team refusing to give up their day off, 1 travels across the Pond himself - only to find that the report was a ruse by the misunderstood mad scientist Professor Triple Extra-Large! The snow-cone expert has come close to perfecting his masterpiece, and now needs a test subject who is immune

The team is giving a report on their mission to retrieve a mysterious box, while trying to keep the Delightful Children from getting it. Unfortunately, each operative's version of the story is... exaggerated to say the least. Can their superiors find any truth in their speculative snafu?