The BEST Episodes of Codename: Kids Next Door

Every episode ever - ranked by fan votes!

Last Updated: Nov 21, 2019

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: A.W.A.R.D.S.

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

Season 6 - Episode 3

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

star 9.20
5 votes
Operation: S.U.P.P.O.R.T.

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

Season 2 - Episode 5

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
8 votes
Operation: T.R.I.C.Y.C.L.E.

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

Season 6 - Episode 11

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 8.80
5 votes
Operation: C.R.I.M.E.

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

Season 6 - Episode 12

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 8.80
5 votes
Operation: C.L.U.E.S.

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

Season 4 - Episode 4

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 8.67
6 votes
Operation: A.R.C.H.I.V.E.

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

Season 3 - Episode 9

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 8.60
5 votes
Operation: B.R.E.A.K.U.P.

#7 - Operation: B.R.E.A.K.U.P.

Season 5 - Episode 6

Wallabee Beetles is charged with protecting his mom's prized/priceless koala bear vase, or he'll have to go to Ballroom Dancing School for ballroom dancing lessons. This becomes increasingly hard as the vase is stolen. He follows the robber, which takes him to a base ball stadium and used for a baseball-like game called "Vaseball", where kids use glass and pottery as the balls. Numbuh 4 thinks he must play, and turns out to be very good. But then, the pitcher throws the vase he was supposed to protect. He tries to get away with the vase, only to find himself in a room of bullies. In the office, Wallabee uncovers an insidious plot by his old friend turned enemy Ernest (the commissioner of Vaseball) and his band of bullies, who plan to rat the kids out for their misbehavior, so they can get the kids grounded that way no one can tattle on them as they vandalize every house in the neighborhood. He accidentally knocks over a bookshelf -- "Uhh... Does that count as a home run?" He gets away, only to find himself in a match to the death with Ernest. They duel with plates, vases, and all sorts of breakable china. The only thing they don't destroy is the vase Wallabee is supposed to protect. Finally, he knocks a bookcase on Ernest, knocking him out cold. He saves the vase, but the other bullies have already carried out their plan. Every kid (including Ernest) is grounded except for Wallabee. "He will always live in the hearts of kids who love to break things." As the screen goes black, we can hear the vase finally breaking and his mother angrily screaming "WALLABEE!". It's unknown if she follows through with her earlier threat.

star 8.60
5 votes
Operation: P.O.P.

#8 - Operation: P.O.P.

Season 2 - Episode 2

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 8.60
10 votes
Operation: R.O.B.B.E.R.S.

#9 - Operation: R.O.B.B.E.R.S.

Season 3 - Episode 5

It's time for the morning commute to school, and for once, Numbuh 4 is anxious to go, mostly because he has a crush on the new teacher. But on the way to school, the bus is attacked by kids dressed by cowboys packing chewing-gun loaded six-shooters, demanding the students' spelling homework! Now Numbuh 4 pursues the bandits outside, while Numbuh 5 engages them on the bus itself. Can they save the day before first bell? And who is the brains behind these delinquent desperadoes?!

star 8.60
5 votes
Operation: O.U.T.B.R.E.A.K.

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

Season 5 - Episode 10

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 8.60
5 votes
Operation: S.I.X.

#11 - Operation: S.I.X.

Season 6 - Episode 10

Numbuhs 2, 3, and 6 are tricked and must get a truckload of soda to a girl's birthday party and keep Mr. Fizz and Lieutenant Seltzer from getting the soda.

star 8.60
5 votes
Operation: V.I.R.U.S.

#12 - Operation: V.I.R.U.S.

Season 5 - Episode 9

Numbuh 5 tries to save her sister Cree from a contagious disease that KND have made in revenge for creating chicken pox which is revealed to be a giant pimple on Cree's cheek. Cree has unleashed Patient C before leaving the KND Scientific Research SeaBase.

star 8.50
4 votes
Operation: P.A.R.T.Y.

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

Season 6 - Episode 13

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 8.50
6 votes
Operation: N.A.U.G.H.T.Y

#14 - Operation: N.A.U.G.H.T.Y

Season 5 - Episode 8

A Christmas Episode. How the Delightfuls stole Christmas. The story is similar to How the Grinch Stole Christmas, but has many elements from the X-men series. When the Delightful Children From Down The Lane steal Santa's REINDEER machine and frame Sector V for the crime. The DCFDTL plan to use the REINDEER system to get all the presents for themselves while every other kid will get nothing coal! Now, the Sector V team must fight the Elfa Strike team if they are going to clear their names and prevent the DCFDTL from ruining Christmas.

star 8.40
5 votes
Operation: M.A.C.A.R.R.O.N.I.

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

Season 4 - Episode 6

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 8.40
5 votes
Operation: E.N.D.

#16 - Operation: E.N.D.

Season 2 - Episode 25

When Numbuh 1 is fishing with his dad, Numbuh 86 and her group appear and tell him that he's been scheduled for a decommissioning! Although he escapes, his teammates are taken to be decommissioned, so he has to enlist the help of Numbuh 2's little brother Tommy to try and save them! Unfortunatly, he is too late, but can he still save the Moon Base from a fiery demise?

star 8.33
3 votes
Operation: A.F.L.O.A.T.

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

Season 3 - Episode 2

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: B.U.T.T.

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

Season 3 - Episode 7

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 8.33
6 votes
Operation: C.L.O.W.N.

#19 - Operation: C.L.O.W.N.

Season 5 - Episode 16

The episode starts with Numbuh 2 cracking bad puns during his report on King Arthur and his knights. Later, Numbuh 5 punches Numbuh 2 and he asks what was that for. Numbuh 5 says it's for having her listen to those lame jokes. Numbuh 2 counters with a newspaper column saying he's the four star riot of fourth grade. Numbuh 5 than says the column was written by Numbuh 2 himself. This doesn't effect Numbuh 2 and he asks if he should of given himself more stars.

star 8.33
3 votes
Operation: T.R.I.P.

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

Season 2 - Episode 24

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 8.33
3 votes
Operation: F.A.S.T.-F.O.O.D.

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

Season 2 - Episode 8

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 8.29
7 votes
Operation: K.I.S.S.

#22 - Operation: K.I.S.S.

Season 2 - Episode 12

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! But a bad situation only gets

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

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

Season 1 - Episode 22

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

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

Season 3 - Episode 6

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
4 votes
Operation: C.A.K.E.D.-T.H.R.E.E.

#25 - Operation: C.A.K.E.D.-T.H.R.E.E.

Season 3 - Episode 13

It's the Delightful Children From Down The Lane's birthday again, and that means it's time once again for the Kids Next Door to make off with their fantastic cake! But when the plan to egg the Delightfuls to submission goes afowl, the Kids must decide whether the cake is really worth it.

star 8.25
4 votes