The BEST Episodes of Codename: Kids Next Door

Every episode ever - ranked by fan votes!

Last Updated: Feb 12, 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.

Operation: C.A.T.S.

#1 - 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 9.47
38 votes
Operation: A.W.A.R.D.S.

#2 - 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 9.14
7 votes
Operation: S.U.P.P.O.R.T.

#3 - 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 9.00
10 votes
Operation: C.L.U.E.S.

#4 - 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 8.86
7 votes
Operation: A.R.C.H.I.V.E.

#5 - 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 8.83
6 votes
Operation: T.R.I.P.

#6 - 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 8.75
4 votes
Operation: P.O.P.

#7 - 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 8.73
11 votes
Operation: F.O.U.N.T.A.I.N.

#8 - 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 8.60
5 votes
Operation: B.U.L.L.I.E.S.

#9 - 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 8.57
35 votes
Operation: C.R.I.M.E.

#10 - 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 8.57
7 votes
Operation: M.A.C.A.R.R.O.N.I.

#11 - Operation: M.A.C.A.R.R.O.N.I.

Season 4 - Episode 6 - Aired Dec 3, 2004

The KND try to protect the Macaroni Museum of Art from being ransacked, with the worst KND operative ever, Numbuh 13, on their side.

star 8.57
7 votes
Operation: P.I.A.N.O.

#12 - Operation: P.I.A.N.O.

Season 1 - Episode 22 - Aired Feb 21, 2003

Operation P.I.A.N.O.: Numbah 4 discovers a shipment of type P kid torcher devices, thats right pianos! On the mission he is impatient to destroy the pianos hurt badly. Then an ambitious hamster takes his place temporarily and makes a very effective plan to destroy the final piano until a jelous Numbah 4 ruins it.

star 8.50
6 votes
Operation: T.R.I.C.Y.C.L.E.

#13 - 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 8.50
6 votes
Operation: B.U.T.T.

#14 - 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 8.50
8 votes
Operation: L.I.C.E.

#15 - 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 8.47
34 votes
Operation: F.A.S.T.-F.O.O.D.

#16 - 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 8.44
9 votes
Operation: P.A.R.T.Y.

#17 - Operation: P.A.R.T.Y.

Season 6 - Episode 13 - Aired Jan 26, 2007

With Father away for the day, The DCFDTL invite Cree and the teenagers to their mansion to plan a new strategy against the Kids Next Door, but instead, the teenagers turn it into a wild house party, leaving the DCFDTL to call Sector V for help.

star 8.38
8 votes
Operation: M.I.N.I.G.O.L.F.

#18 - Operation: M.I.N.I.G.O.L.F.

Season 1 - Episode 11 - Aired Dec 27, 2002

When Numbuh 2 challenges mini golf champ Rupert Puttkin to a match but soon realizes Rupert has another plan in his golfbag!

star 8.36
11 votes
Operation: A.F.L.O.A.T.

#19 - Operation: A.F.L.O.A.T.

Season 3 - Episode 2 - Aired Jun 18, 2004

The Team attempts to crash the Annual We Hate The Kids Next Door Barbecue, only to find that the party has far more villains than they can handle! The team flees in their M.E.G.A.R.A.G.E aircraft, but Stickbeard and his band of buccaneers do not give up pursuit! When their craft is shot down by the Sweet Revenge, they land in the worst of places - in the middle of the ocean, in a disgusting sargasso of asparagus! Stranded, lost, with no edible food, a bad situation gets much worse when they are found by a great white aspargus monster! And when the vile vegetable seeks to make them its prey, all hope seems lost. Can their be any escape from this savage sprout?!

star 8.33
6 votes
Operation: O.U.T.B.R.E.A.K.

#20 - Operation: O.U.T.B.R.E.A.K.

Season 5 - Episode 10 - Aired Jan 9, 2005

The KND scientists at the Deep-Sea Science Lab capture "Patient C", due to their belief that she has cooties. When Cree lets Patient C out of her containment unit, in Operation: V.I.R.U.S. , as revenge for the KND ruining Cree's date with Numbuh 9, can Sector V recapture the escape without catching "the C.O.O.T.I.E.S."?

star 8.33
6 votes
No P in the OOL

#21 - No P in the OOL

Season 1 - Episode 3 - Aired Nov 6, 2002

When the villainous Mr. Wink and Mr. Fibb extend the adult swimtime to extreme lengths at the neighborhood pool, the Kids Next Door plan to strike back with a vengeance.

star 8.30
23 votes
Operation: B.E.A.C.H.

#22 - 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 8.25
4 votes
Operation: D.O.G.-F.I.G.H.T.

#23 - 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 8.25
4 votes
Operation: C.A.M.P.

#24 - Operation: C.A.M.P.

Season 1 - Episode 19 - Aired Jan 24, 2003

Can Numbuh 1 stop a camp counselor without the help of 2 and 3? Probably not...

star 8.25
4 votes
Operation: M.U.N.C.H.I.E.S.

#25 - 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 8.25
4 votes