The BEST Episodes of Codename: Kids Next Door

Every episode ever - ranked by fan votes!

Last Updated: Dec 24, 2021

Network: Cartoon Network

Taking numbers instead of names, five extraordinary 10-year-olds form a covert team called the Kids Next Door with one dedicated mission: to free all children from the tyrannical rule of adults.

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Operation: M.U.N.C.H.I.E.S.

#1 - Operation: M.U.N.C.H.I.E.S.

Season 4 - Episode 14 - Aired Feb 21, 2005

The KND have run out of Rainbow Munchies, their favorite cereal, so they send out tennis-ball probes to find a box. They find it in Aisle Number 60-teen at the Supervillains Supermarket & Deli, but it is the last one the store has, and it's as popular with the bad guys as it is with the KND!

star 10.20
5 votes
Operation: G.I.R.L.F.R.I.E.N.D.

#2 - Operation: G.I.R.L.F.R.I.E.N.D.

Season 6 - Episode 18 - Aired Nov 9, 2007

Lizzie's always had to compete with the Kids Next Door for Nigel's attention, and she thinks Nigel has found a new girlfriend. but now it seems she has a rival for his love!

star 10.00
5 votes
Operation: T.R.I.C.Y.C.L.E.

#3 - Operation: T.R.I.C.Y.C.L.E.

Season 6 - Episode 11 - Aired Jan 19, 2007

Tommy loves Numbuh 2's cruddy, old tricycle but gets laughed at when the other kids see him riding it. Using his 2x4 technology expertise, Tommy rebuilds it into the "Best Bike in the Whole World", but the bike turns evil trying to impress Numbuh 2.

star 9.63
8 votes
Operation: C.A.T.S.

#4 - Operation: C.A.T.S.

Season 2 - Episode 1 - Aired Oct 3, 2003

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?

star 9.29
42 votes
Operation: F.A.S.T.-F.O.O.D.

#5 - Operation: F.A.S.T.-F.O.O.D.

Season 2 - Episode 8 - Aired Oct 24, 2003

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!

star 9.15
13 votes
Operation: H.A.M.S.T.E.R.

#6 - Operation: H.A.M.S.T.E.R.

Season 6 - Episode 5 - Aired Sep 22, 2006

While the team is off on their recess-rescuing mission, the hamsters are attacked and captured by the Sinister Felines from Atop the Litterbox, but end up battling the Hamsters Next Door.

star 8.78
9 votes
Operation: C.L.U.E.S.

#7 - Operation: C.L.U.E.S.

Season 4 - Episode 4 - Aired Nov 5, 2004

A dinner with Numbuh 2's family turns sour when Numbuh 3's Sigh & Care Rainbow Monkey is found with a fork in it's back, it's up to Hoagie to find this monkey murderer.

star 8.75
8 votes
Operation: A.W.A.R.D.S.

#8 - Operation: A.W.A.R.D.S.

Season 6 - Episode 3 - Aired Sep 15, 2006

Sector V attempts to sabotage the Villain's Choice Awards.

star 8.75
8 votes
Operation: S.U.P.P.O.R.T.

#9 - Operation: S.U.P.P.O.R.T.

Season 2 - Episode 5 - Aired Oct 17, 2003

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?

star 8.69
13 votes
Operation: D.O.G.F.I.G.H.T.

#10 - Operation: D.O.G.F.I.G.H.T.

Season 2 - Episode 23 - Aired May 28, 2004

Numbuh 2 has always been one of the best pilots in the organization - but one day while taking his 2X4 aircraft for a spin, he's shot down by a mysterious child pilot with a 2X4 plane of his own. 2 seeks revenge, but the pilot is untouchable, and manages to shoot him down out of every aircraft in the team's arsenal! Considering giving up, piloting, Hogie finally finds a way to defeat the pilot - only to discover that his supplier has been fooling them both into fighting each other in a plot to destroy every chili dog in town! Can the dueling dogfaces prevent this mystery meat massacre?!

star 8.67
6 votes
Operation: T.R.I.P.

#11 - Operation: T.R.I.P.

Season 2 - Episode 24 - Aired May 28, 2004

Father learns that Numbuh 3 is traveling to her homeland to meet up with the secret Japanese branch of the Kids Next Door; so he sends his best spies, the Interesting Twins From Beneth the Mountain, to trail Kuki and find the location of the Japanese agents' hideaway so an attack can be made. But when the two young spies trail 3, a combination of thei

star 8.67
6 votes
Operation: H.O.T.S.T.U.F.F.

#12 - Operation: H.O.T.S.T.U.F.F.

Season 5 - Episode 18 - Aired Jul 14, 2006

Before the theme starts, Kani tells his eldest daughter, Kuki, not to touch the thermostat even though the house is unbearably cold. After seeing the thermostat's temperature dropping to colder temperature, Kuki decides to touch the thermostat and make things hotter. The next day, the other Sector V agents are gathered for a meeting. Nigel goes jabbering on about cauliflower being rainbow monkey brains. The rest of Sector V doubted this and, while Nigel jabbers on, Kani comes in and tells the agents about Kuki turning up the thermostat. Nigie leaves Wallabee to guard Kani. The rest of Sector V shows up to Kuki's house which is now transformed into an active volcano and ready to explode. Rachel suggests sending Sector P in Pompeii to turn down the thermostat as they have more experience with volcanoes but Numbuh 1 disapproves of this since Kuki is a member of their sector.

star 8.57
7 votes
Operation: B.E.A.C.H.

#13 - Operation: B.E.A.C.H.

Season 2 - Episode 21 - Aired May 21, 2004

The KND take a vacation to the beach (and Numbuh 1 promptly leaves, since he hates the place), where Numbuh 3 is quickly kidnapped by the armored Kinights of the Round Towel, who drag her before King Sandy, a miniature monarch who quickly falls in love with her! Naturally, the concerned Numbuhs 4 with Numbuhs 2 and 5 confronting the beachcombing brat in his enormous sandcastle... but they are soon overwhelmed. Can the KND topple this tiny tyrant before high tide?

star 8.50
6 votes
Operation: B.U.L.L.I.E.S.

#14 - Operation: B.U.L.L.I.E.S.

Season 5 - Episode 4 - Aired May 13, 2005

Numbuh 2 and Numbuh 4 visit Bully Island, a bully habitat owned by Jerry Rassic (an obvious parody of Jurassic Park). Numbuh 2 is interested in the scientific aspect of it, while Numbuh 4 is only in it to see the different types of bullies on the island. After seeing a 'teasing time' (similar to feeding time, but instead kid crash dummies are set on swings and Spitballasaurises come and shot spitballs at them), Numbuh 2 asks Jerry anxiously if he's ever worried about his own safety, being surrounded by bullies all the time. Jerry replies that Bully Island is perfectly safe, and the bullies are in cages that keep them away from him and his sister Eliza, who also lives on the island.

star 8.50
36 votes
Operation: A.R.C.H.I.V.E.

#15 - Operation: A.R.C.H.I.V.E.

Season 3 - Episode 9 - Aired Jul 23, 2004

The true history of the genesis of the Adult-Child conflict is revealed. This is the story the Adults do not want you to hear.

star 8.50
8 votes
Operation: P.O.P.

#16 - Operation: P.O.P.

Season 2 - Episode 2 - Aired Oct 3, 2003

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?

star 8.50
14 votes
Operation: L.I.C.E.

#17 - Operation: L.I.C.E.

Season 1 - Episode 14 - Aired Jan 10, 2003

Numbuh 5 goes on a secret mission to find nachos at the delightful children from down the lane's house, when her hat gets lost. She quickly recovers it and hurriedly runs to the KND headquarters, she then starts itching her head alot and lice comes out of her hat! But it's not really her hat her other hat is with the delightful children from down the lane. The Lice start to take over. The only way to get rid of them is with nacho cheese.

star 8.49
37 votes
Operation: P.I.N.K.E.Y.E.

#18 - Operation: P.I.N.K.E.Y.E.

Season 3 - Episode 11 - Aired Jul 30, 2004

Numbuh 2 has set up a private eye office in the school janitor closet, and soon he gets his first case - someone is inflicting students with bad cases of pink-eye! When Numbuh 86 becomes the latest victim and he gets no help from Joe the hall monitor (his old partner before he joined the KND), 2 does some of his own deductive work - until Joe attacks him. When he confronts the crooked monitor, Joe himself is attacked, and 2's investigations lead him to the school nurse - who appears to be using the students' illness to make the topping for crumb cake! Can Numbuh 2 close the case on this crummy cake caper?!

star 8.40
10 votes
Operation: C.H.A.D.

#19 - Operation: C.H.A.D.

Season 1 - Episode 21 - Aired Feb 7, 2003

When operatives from the KND international organization are neutralized by Mega Mom and Destructo Dad, The KND team up with the legendary operative Numbuh 274 to "" ground the powerful parental enemies.

star 8.29
7 votes
Operation: F.U.G.I.T.I.V.E.

#20 - Operation: F.U.G.I.T.I.V.E.

Season 2 - Episode 14 - Aired Nov 14, 2003

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

star 8.29
7 votes
Operation: P.O.I.N.T.

#21 - Operation: P.O.I.N.T.

Season 1 - Episode 17 - Aired Jan 17, 2003

All the teenagers in the KND's hommetown have formed a group called The Point and Numbah 1 suspects that they are helping the parents. So, the KND stage a raid at the Point's secret headquarters and are horrified at what the see.

star 8.29
7 votes
Operation: B.U.T.T.

#22 - Operation: B.U.T.T.

Season 3 - Episode 7 - Aired Jul 16, 2004

Feeling that Numbuh 1 must take a day off, the team force him to go to the beach, telling him to have fun or else. Nigel makes an honest attempt - until a crab swipes his swim trunks! After suffering a great amount of public embarrassment, 1 makes his way back to the Treehouse... and minutes later, walks out of his room to tell his terrified team that he's resigning from the Kids Next Door! After he leaves, the purpose becomes quite clear... an envelope is found in his room from the Delightful Children, with a picture of his tush and a note saying ""Leave your team behind or we'll put your behind in the school yearbook."" Now Numbuh 1 is heading for Delightful Manor, where the evil peeping toms desire to make him one of them! Can the team save their leader from the sadistic shutterbugs?!

star 8.27
11 votes
Operation: D.A.D.D.Y.

#23 - Operation: D.A.D.D.Y.

Season 5 - Episode 15 - Aired Jun 16, 2006

Numbuh 85 is taken to the KND Hairstyle Headquarters (Sector HH). Numbuh VO5 and his hair doctors try to get his hair back to some form of coolness. It didn't work. Numbuh 1 hides in the room that Numbuhs 83, 84, and 85 are in and informs the trio that the hair doctors were trying to rub dog poop on his head to see if it (his hair) can grow back. Numbuh 1 then notices Numbuh 85's haircut asking "Leaping Lizzies! What did they do to you?!". Numbuh 85 responds that the hair doctors didn't do it, his father did.

star 8.25
8 votes
Operation: F.O.U.N.T.A.I.N.

#24 - Operation: F.O.U.N.T.A.I.N.

Season 3 - Episode 6 - Aired Jul 9, 2004

The Delightful Children kidnap the team's classmate, nerdy, spit-talking ""Leaky"" Leona, and force her to lead them to the dark underbellies of the school. Alerted by Numbuh 5, the team follows them, and find themselves in an ancient school, laden with deadly booby traps. Avoiding them all, the team finds Leona, strangely aged to an old woman, who leads them to the mythical Fountain of Youth! The KND are amazed at the prospect of remaining ten years old forever, but the Delightful Children desire nothing less than to destroy the Fountain, claiming that the goal of all children should be to grow up. Can the Kids Next door save the supernatural spring? And what strange secret is ""Leaky"" Leona hiding?

star 8.25
8 votes
Operation: C.R.I.M.E.

#25 - Operation: C.R.I.M.E.

Season 6 - Episode 12 - Aired Jan 26, 2007

When Gallagher Elementary students are being arrested by the School Safety Patrol for crimes they are envisioned to commit, including detective Numbuh 2, it's up to Numbuh 3 to investigate a psychic member of the School Safety Patrol while trying to finish her social studies homework.

star 8.25
8 votes