Codename: Kids Next Door

The BEST episodes of Codename: Kids Next Door

Every episode of Codename: Kids Next Door ever, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Codename: Kids Next Door!

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.

Last Updated: 8/5/2022Network: Cartoon Network
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Operation: M.U.N.C.H.I.E.S.
star
9.67
9 votes

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

Season 4 - Episode 14 - Aired 2/21/2005

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!

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Operation: G.I.R.L.F.R.I.E.N.D.
star
9.37
8 votes

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

Season 6 - Episode 18 - Aired 11/9/2007

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!

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Operation: C.A.T.S.
star
9.22
45 votes

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

Season 2 - Episode 1 - Aired 10/3/2003

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?

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Operation: T.R.I.C.Y.C.L.E.
star
9.18
11 votes

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

Season 6 - Episode 11 - Aired 1/19/2007

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.

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Operation: F.A.S.T.-F.O.O.D.
star
8.94
16 votes

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

Season 2 - Episode 8 - Aired 10/24/2003

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!

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Operation: A.W.A.R.D.S.
star
8.90
10 votes

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

Season 6 - Episode 3 - Aired 9/15/2006

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

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Operation: C.L.U.E.S.
star
8.82
11 votes

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

Season 4 - Episode 4 - Aired 11/5/2004

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.

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

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

Season 2 - Episode 5 - Aired 10/17/2003

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?

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Operation: D.O.G.F.I.G.H.T.
star
8.70
10 votes

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

Season 2 - Episode 23 - Aired 5/28/2004

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?!

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

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

Season 3 - Episode 9 - Aired 7/23/2004

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.

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Operation: T.R.I.P.
star
8.56
9 votes

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

Season 2 - Episode 24 - Aired 5/28/2004

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

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Operation: H.A.M.S.T.E.R.
star
8.50
12 votes

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

Season 6 - Episode 5 - Aired 9/22/2006

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.

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Operation: L.I.C.E.
star
8.48
40 votes

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

Season 1 - Episode 14 - Aired 1/10/2003

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.

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Operation: H.O.T.S.T.U.F.F.
star
8.45
11 votes

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

Season 5 - Episode 18 - Aired 7/14/2006

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.

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Operation: B.U.L.L.I.E.S.
star
8.45
40 votes

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

Season 5 - Episode 4 - Aired 5/13/2005

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.

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Operation: P.O.P.
star
8.44
18 votes

#16 - Operation: P.O.P.

Season 2 - Episode 2 - Aired 10/3/2003

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?

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Operation: M.A.U.R.I.C.E.
star
8.43
7 votes

#17 - Operation: M.A.U.R.I.C.E.

Season 4 - Episode 18 - Aired 7/8/2005

Maurice, a member of the Kids Next Door is de-commissioned. Numbuh 5 is saddened by it, and suggests that they monitor Maurice to make sure the teenagers don’t recruit him.The episode starts when a group of Teens break in to ten year old Numbuh 9's bedroom. Thinking that he is asleep, they try to fire their 'Pox Gun' at him. Suddenly, Numbuh 9 leaps up and yells for the rest of his team, the old Sector V, and they bravely fight off the Teens.

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Operation: P.I.N.K.E.Y.E.
star
8.36
14 votes

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

Season 3 - Episode 11 - Aired 7/30/2004

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?!

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Operation: M.A.C.A.R.R.O.N.I.
star
8.33
12 votes

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

Season 4 - Episode 6 - Aired 12/3/2004

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

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Operation: N.A.U.G.H.T.Y.
star
8.29
14 votes

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

Season 5 - Episode 8 - Aired 12/16/2005

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.

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Operation: F.E.R.A.L.
star
8.29
7 votes

#21 - Operation: F.E.R.A.L.

Season 4 - Episode 22 - Aired 7/22/2005

Numbuh 1 and Sector V are on Rainbow Monkey Island trying to take "The Code" from the Delightful Children.

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Operation: O.U.T.B.R.E.A.K.
star
8.27
11 votes

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

Season 5 - Episode 10 - Aired 1/9/2005

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."?

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Operation: F.O.U.N.T.A.I.N.
star
8.27
11 votes

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

Season 3 - Episode 6 - Aired 7/9/2004

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?

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Operation: D.A.D.D.Y.
star
8.25
12 votes

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

Season 5 - Episode 15 - Aired 6/16/2006

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.

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No P in the OOL
star
8.24
33 votes

#25 - No P in the OOL

Season 1 - Episode 3 - Aired 11/6/2002

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.

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