List of Codename: Kids Next Door episodes

Codename: Kids Next Door is a 78-episode American animated television series created by Mr. Warburton and produced by Curious Pictures. The series debuted on Cartoon Network in the United States on December 6, 2002, and ended on January 21, 2008, with the special episode, "Operation: I.N.T.E.R.V.I.E.W.S.". Warburton originally pitched "Diseasy Does It", his Hanna-Barbera-produced short for a series titled Kenny and the Chimp, with "Those Kids Next Door" planned as recurring characters. When the plot was refined to have the "Kids Next Door" as main characters, Warburton created "No P in the OOL", a series pilot produced by Cartoon Network Studios.

Series overview

Season	Segments	Episodes		Originally aired
				First aired	Last aired
Pilots	N/A	2		November 6, 1998 (1998-11-06)	July 20, 2001 (2001-07-20)
1	24	13		December 6, 2002 (2002-12-06)	March 7, 2003 (2003-03-07)
2	25	13		October 3, 2003 (2003-10-03)	June 4, 2004 (2004-06-04)
3	23	13		June 11, 2004 (2004-06-11)	November 12, 2004 (2004-11-12)
4	22	13		November 19, 2004 (2004-11-19)	July 22, 2005 (2005-07-22)
5	22	13		September 30, 2005 (2005-09-30)	August 25, 2006 (2006-08-25)
6	21	13		August 2, 2006 (2006-08-02)	November 23, 2007 (2007-11-23)
Specials	N/A	3		August 11, 2006 (2006-08-11)	January 21, 2008 (2008-01-21)

Episodes

Pilots (1998-2001)

No.	Title	Directed by	Written by	Storyboarded by	Original air date	Prod. code
1	"Kenny and the Chimp: Diseasy Does It! Or Chimp N'Pox"	Mr. Warburton	Story by: Tom Warburton	Tom Warburton	November 6, 1998 (1998-11-06)	001
					January 31, 2003 (2003-01-31) (rerun)	101b
The pilot and the only produced episode for Warburton's unproduced series Kenny and the Chimp. A working title for the episode was "Chimp N'Pox". It is featured as part of the first episode of Codename: Kids Next Door.
2	"No P in the Ool"	Mr. Warburton	Mr. Warburton	TBA	July 20, 2001 (2001-07-20)	002
					January 31, 2003 (2003-01-31) (rerun)	101c
When the villainous Mr. Wink and Mr. Fibb extend the adult swim time in the neighborhood pool the Kids Next Door are sent a red alert to stop them. Numbuh One suggests employing the Kid-A-Pault, a Kid's Next Door weapon to put an end to their tyranny...But their plan fails, leaving them to find other means of battling Mr. Wink and Mr. Fibb.

Season 1 (2002-03)

No. overall	No. in season	Title	Written by	Storyboarded by	Original air date	Prod. code
1a	1a	"Operation: I.-S.C.R.E.A.M." "Important - Steal Creamy Refrigerated Edibles - Avoid Meltdown"	Mr. Warburton & Mo Willems	Matt Peters	December 6, 2002 (2002-12-06)	102a
The group catches wind of some ice cream men who refuse to give ice cream to children, so they interrogate them and get the password to their ice cream factory, only to be in for a major surprise from the Delightful Children from Down the Lane, because the ice cream that they take turns into a monster that tries to eat them, but eventually gets defeated by a heater that was turned on by Numbuh 3.
1b	1b	"Operation: C.A.N.N.O.N." "Cannon and Nap-time Not Occuring Normally"	Mo Willems & Mr. Warburton	Bob Suarez	December 6, 2002 (2002-12-06)	102b
Numbuh 4 forces the other operatives to build a "clam cannon" when Numbuh 1 leaves.
2a	2a	"Operation: N.O.-P.O.W.U.H." "New Orders - Pulverize Opposition without Utilizing Hamsters"	Mo Willems & Mr. Warburton	Kim Arndt	December 13, 2002 (2002-12-13)	103a
The hamsters that power Sector V's weapons are hypnotized by Numbuh 1, but suddenly, Numbuhs 1, 2, 3, 4, and 5 are angry when the hamsters run away! Meanwhile, the Delightful Children from Down the Lane looks for villains to attack Sector V, so they send an old lady named Gramma Stuffum, who is fixated on fattening kids, to Sector V's powerless HQ.
2b	2b	"Operation: T.E.E.T.H." "Tooth Extracting Enemy Terrorizes Headquarters"	Mr. Warburton & Mo Willems	Kim Arndt	December 13, 2002 (2002-12-13)	103b
Numbuh 3's teeth are cleaned by a dental-obsessive villain, Knightbrace.
3a	3a	"Operation: P.I.R.A.T.E." "Pirates Invade Repository and Treats Extracted"	Rob Leighton, Mr. Warburton, & Mo Willems	Tom Connor	December 20, 2002 (2002-12-20)	104a
Captain Stickybeard and his Candy Pirate crew steal Sector V's candy, including Numbuh 5's secret stash. Numbuh 5 does not want her candy stash to be taken, so she boards Stickybeard's pirate ship to retrieve it. The KND have to rescue her and the candy too.
3b	3b	"Operation: C.O.W.G.I.R.L." "Crazy Old Lady Goes Incredibly Really Loco"	Tom Eaton, Mr. Warburton & Mo Willems	Tony Eastman	December 20, 2002 (2002-12-20)	104b
An adult named Lasso Lass (who keeps acting like a kid) wants to help Sector V defeat Mr. Wink and Mr. Fibb.
4a	4a	"Operation: T.U.R.N.I.P." "Turnips Unfortunately Reaching Near Infestation Point"	Rob Leighton, Mr. Warburton, & Mo Willems	Guy Moore	December 27, 2002 (2002-12-27)	105a
When turnips are found everywhere in Sector V's treehouse, they go to the source: a giant turnip, to defeat it.
4b	4b	"Operation: M.I.N.I.-G.O.L.F." "Miniaturization Is Now Issue - Golfing Opposite Looney Fanatic"	Mo Willems & Mr. Warburton	Maurice Fontenot	December 27, 2002 (2002-12-27)	105b
After Numbuh 2 beats a mini-golf champion at mini-golf, the golfer shrinks Numbuh 2, and many sights from around the world.
5a	5a	"Operation: O.F.F.I.C.E." "On Fourteenth Floor Is Corporate Evil"	Mr. Warburton & Mo Willems	Kim Arndt	January 3, 2003 (2003-01-03)	106a
When his father brings Numbuh 4 to work for "Bring Your Daughter to Work Day", Numbuh 4 discovers his father's boss plans to send him and all the daughters of his coworkers to Pluto.
5b	5b	"Operation: A.R.C.T.I.C." "Am Really Cold That is Certain"	Mr. Warburton & Mo Willems	Dave Wachtenheim	January 3, 2003 (2003-01-03)	106b
A fellow operative, Numbuh 30c, is sent to help Sector V stop a villain from using a weather machine to make no more snow days for school. It turns out that he was not helping, because he sent them the wrong directions, ignored their cries for help, and sent a missile to attack them.
6a	6a	"Operation: L.I.C.E." "Lice Interrupt Cheese Eating"	Rob Leighton, Mr. Warburton, & Mo Willems	Matt Peters	January 10, 2003 (2003-01-10)	107a
The Delightful Children from Down the Lane attack Sector V's headquarters with an infestation of hair-eating lice. After the KND find out they do not like nacho cheese, they decide to shoot nacho cheese at them to get rid of them.
6b	6b	"Operation: L.I.Z.Z.I.E." "Love Is Zesty Zany Insanity eh?"	Mo Willems & Mr. Warburton	Bob Suarez	January 10, 2003 (2003-01-10)	107b
Numbuh 1 has a secret girlfriend who he often neglects because of his Kids Next Door responsibilities, forcing her to use a boyfriend helmet to mind- control Numbuh 1. If the helmet stays on for too long, it will start to merge with Numbuh 1's head and stay on forever.
7a	7a	"Operation: T.H.E.-F.L.Y." "Tiny Horsefly Examines Five Little Youngsters"	Mo Willems & Mr. Warburton	Guy Moore	January 17, 2003 (2003-01-17)	108a
A fly finds its way into Sector V's headquarters.
7b	7b	"Operation: P.O.I.N.T." "Prowling Operatives Investigate Naughty Teenagers"	Mr. Warburton & Mo Willems	Tom Connor	January 17, 2003 (2003-01-17)	108b
All of the teenagers in Sector V's hometown have formed a place called The Point, and Numbuh 1 suspects that they are helping the adults.
8a	8a	"Operation: C.A.B.L.E.-T.V." "Crazy Arrogant Baby Loses Every Television Viewer"	Mo Willems & Mr. Warburton	Maurice Fontenot	January 24, 2003 (2003-01-24)	109a
A villainous half-man, half-baby named Mr. B gives the Kids Next Door a television series of their own.
8b	8b	"Operation: C.A.M.P." "Children are Miserable Parents"	Mo Willems & Mr. Warburton	Joe St. Pierre	January 24, 2003 (2003-01-24)	109b
A lost baby skunk interferes with a mission to rescue brainwashed campers.
9	9	"Operation: C.A.K.E.D." "Capturize and Kidnapify Enemy Dessert"	Mr. Warburton	Maurice Fontenot	January 31, 2003 (2003-01-31)	101a
The Kids Next Door attempt to stop a birthday party for their arch-enemies, the Delightful Children from Down the Lane. The task is made complicated by the presence of the Big Badolescent, a girl who grows alarmingly in size and strength when she does not get her way. Note: This episode is only seven minutes long and is paired with "Diseasy Does It" and "No P in the OOl" when aired. Although the episode is also chronologically the first, it was not the first episode aired. Operation: I.-S.C.R.E.A.M. and Operation: C.A.N.N.O.N., the second produced episodes, aired as the series premiere on December 6, 2002, while this episode didn't air until January 31, 2003.
10a	10a	"Operation: T.O.M.M.Y." "Totally Obnoxious Moronic Medding Youngster"	Mo Willems & Mr. Warburton	Karen Disher	February 7, 2003 (2003-02-07)	110a
Numbuh 2's little brother, Tommy (who is shunned by Sector V), joins forces with a villain, Common Cold.
10b	10b	"Operation: C.H.A.D." "Charming Hero Avoids Destruction"	Mo Willems & Mr. Warburton	Mike Wetterhann	February 7, 2003 (2003-02-07)	110b
Two parental villains are stupefying KND operatives around the world; an operative named Chad (Numbuh 274) enlists the help of Sector V.
11a	11a	"Operation: P.I.A.N.O." "Pesky Instruments Advances New Operative"	Mo Willems & Mr. Warburton	Matt Peters	February 21, 2003 (2003-02-21)	111a
Sector V tries to destroy all the pianos in a truck with a hamster that acts as Numbuh 4's replacement.
11b	11b	"Operation: Z.O.O." "Zoologically Obsessed Octogenarian"	Mo Willems & Mr. Warburton	Bob Suarez	February 21, 2003 (2003-02-21)	111b
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.
12a	12a	"Operation: Q.U.I.E.T." "Quiet Unlikely in Entire Treehouse"	Mo Willems & Mr. Warburton	Guy Moore	February 28, 2003 (2003-02-28)	1112a
Numbuh 5 tries to keep the treehouse quiet so Numbuh 1 can sleep.
12b	12b	"Operation: R.A.I.N.B.O.W.S." "Running Amok in Nature's Bounty Observing Wild Simians"	Mo Willems & Mr. Warburton	Matt Peters & Tom Connor	February 28, 2003 (2003-02-28)	1112b
The boss of Rainbow Monkey Inc. uses Numbuh 3 to find real Rainbow Monkeys for him.
13	13	"Operation: G.R.O.W.-U.P." "Getting Really Old Will Upset Plans"	Mo Willems & Mr. Warburton	Kim Arndt & Maurice Fontenot	March 7, 2003 (2003-03-07)	113
The frustrated Delightful Children from Down the Lane turn to their Father for help destroying Sector V. Their leader is turned into an adult, the treehouse is destroyed, and their faith is shattered; Sector V is forced into a showdown with their most dangerous foe yet.

Season 2 (2003-04)

No. overall	No. in season	Title	Written by	Storyboarded by	Original air date	Prod. code
14a	1a	"Operation: C.A.T.S." "Crazy Aged Tyrant Stinks"	Mo Willems & Mr. Warburton	Kim Arndt & Jesse Schmal	October 3, 2003 (2003-10-03)	201a
Numbuh 4 is mistaken for a cat by an old lady after being stuffed in a kitty costume from his dispute with Numbuh 3.
14b	1b	"Operation: P.O.P." "Pre-teens Oppose Prohibition"	Mr. Warburton & Mo Willems	Matt Peters & Abigail Nesbitt	October 3, 2003 (2003-10-03)	201b
The KND'S soda pop is sought out by an evil industrialist. The legal age for drinking soda has been changed to Everyone 13+. Numbuh 2 is caught selling illegal soda at a local bar and discovers a conspiracy to bottle kids.
15a	2a	"Operation: S.P.A.N.K." "Sore Posteriers Annoy Naughty Kids"	Mr. Warburton & Mo Willems	Maurice Fontenot & Bob Suarez	October 10, 2003 (2003-10-10)	202a
Count Spankulot joins the KND and turns from his evil ways.
15b	2b	"Operation: D.A.T.E." "Dance Actually Threatens Everyone"	Mo Willems & Mr. Warburton	Guy Moore & Quack Leard	October 10, 2003 (2003-10-10)	202b
The KND and nearly every kid in town are invited to a dance at the DCFDTL's mansion. However, it was actually a trap, all the party guests (except Numbuh 1 and Lizzie) are "delightfulized" like the DCFDTL.
16a	3a	"Operation: S.U.P.P.O.R.T." "Special Underwire Protection Proportedly Outfits Rotten Teenagers"	Mr. Warburton & Mo Willems	Kim Arndt & Jesse Schmal	October 17, 2003 (2003-10-17)	203a
Numbuhs 2 and 1 try to find out about Cree's B.R.A. (Battle Ready Armor).
16b	3b	"Operation: T.A.P.I.O.C.A." "Teens And Pudding Inconvenience Our Childish Agents"	Mo Willems & Mr. Warburton	Matt Peters & Abigail Nesbitt	October 17, 2003 (2003-10-17)	203b
Numbuh 2's grandmother joins forces with her friends to locate a pudding supply, which was trapped between the surface of the treehouse.
17a	4a	"Operation: M.O.V.I.E." "Meeting of Villains Isn't Entertaining"	Mo Willems & Mr. Warburton	Maurice Fontenot & Bob Suarez	October 24, 2003 (2003-10-24)	204a
Numbuh 4 tries to sneak into an R-rated movie to find it is a secret villain meeting.
17b	4b	"Operation: F.A.S.T.-F.O.O.D." "Find Another Stupid Task For Our Oblivious Dodo"	Mo Willems & Mr. Warburton	Guy Moore & Quack Leard	October 24, 2003 (2003-10-24)	204b
Numbuh 3 is sent on a mission for her birthday: to get a fast food meal. The restaurant is shown to actually be for sharks, with kids on the menu as murdering, thanks to a new money-making scheme by Chester. Note: This is one of the darkest Kids Next Door episodes, as it features the villain attempting to murder a child and feeding them to some unsuspecting customers.
18a	5a	"Operation: S.H.A.V.E." "Southern Hair Attacks Virtually Everyone"	Mr. Warburton & Mo Willems	Matt Peters & Abigail Nesbitt	October 31, 2003 (2003-10-31)	206a
The KND investigate why people are getting mustaches. They end up showdowning the "head mustache", but they're in for a surprise of who's to blame.
18b	5b	"Operation: O.O.M.P.P.A.H." "Obnoxious Overzealous Male Parent Plays Annoying Horn"	Mr. Warburton & Mo Willems	Kim Arndt & Jesse Schmal	October 31, 2003 (2003-10-31)	206b
Numbuh 1's dad is grabbed by a fishing line along with other dads on the lake, and pulled up to some kid's house above the water. He decides that Numbuh 1's dad is his new dad, so Numbuh 1 battles it out with the sousaphone playing dork for his father.
19a	6a	"Operation: F.L.A.V.O.R." "Find Lost Ancient Variety Of Refreshment"	Mo Willems & Mr. Warburton	Guy Moore & Quack Leard	November 7, 2003 (2003-11-07)	205a
Numbuh 5 is kidnapped and sent to a temple to find a mystical flavor of ice-cream known as "The Fourth Flavor" for the DCFDTL. She dreams to have a chance at tasting the long-lost flavor herself, for only those with pure taste buds may taste it.
19b	6b	"Operation: K.I.S.S." "Kid's Identity Suddenly Sixteen"	Mo Willems & Mr. Warburton	Maurice Fontenot & Bob Suarez	November 7, 2003 (2003-11-07)	205b
Numbuh 2 is turned into a teenager when an experiment goes horribly wrong, but gets smooth with Numbuh 5's older sister.
20a	7a	"Operation: G.H.O.S.T." "Ghostly Hamsters Overwhelm Spooky Treehouse"	Mr. Warburton & Mo Willems	Kim Arndt & Jesse Schmal	November 14, 2003 (2003-11-14)	207a
When Sector V (except Numbuh 4) assists Chubbo's funeral, the ghost arrives at night, kidnapping Numbuh 3 and keeping her with all the past dead hamsters powering the treehouse's core.
20b	7b	"Operation: F.U.G.I.T.I.V.E." "Facing Unpleasant Girl's Insulting Taunts Isn't Very Enjoyable"	Mr. Warburton & Mo Willems	Matt Peters & Abigail Nesbitt	November 14, 2003 (2003-11-14)	207b
The KND try to find an escaped moonbase prisoner at the DCFDTL's mansion, but the boys are brought down with Numbuh 86's yelling and complaining.
21a	8a	"Operation: T.H.E.-S.H.O.G.U.N." "Terrible Huge Enemy Steals Heaps Of Gorgonzola Using Ninjas"	Mr. Warburton & Mo Willems	Guy Moore & Quack Leard	November 21, 2003 (2003-11-21)	208a
A new cheesy restaurant opens, but all the cheese is stolen. When Numbuh 2 tries to use his own cheese, he and Numbuh 4 are captured by cheese ninjas.
21b	8b	"Operation: C.O.L.L.E.G.E." "Concerned Operative Leaves Loafers Engaged Goofily Elsewhere"	Mo Willems & Mr. Warburton	Maurice Fontenot & Bob Suarez	November 21, 2003 (2003-11-21)	208b
While the others have their day off, Numbuh 1 tries to rescue the ten-year-old accepted into college. He finds out that it was his own brain that Professor XXXL wanted: a test subject to his snow cones, since Numbuh 1 is immune to brain freeze.
22a	9a	"Operation: R.E.P.O.R.T." "Ridiculous Exaggerations Possess Occasionally Real Truth"	Mo Willems & Mr. Warburton	Matt Peters & Abigail Nesbitt	December 5, 2003 (2003-12-05)	209a
The KND each give an account of what happened to an ordinary package.
22b	9b	"Operation: B.R.I.E.F." "Big Reward If Enemy Finished"	Brian Meehl, Mo Willems, & Mr. Warburton	Kim Arndt & Jesse Schmal	December 5, 2003 (2003-12-05)	209b
Numbuh 1's underwear is attacking him after finding out how careless children are with underwear.
23a	10a	"Operation: C.A.K.E.D.-T.W.O." "Commandos Attempt Kapturing Enemy Dessert - They Weren't Obliging"	Mo Willems & Mr. Warburton	Guy Moore & Quack Leard	December 12, 2003 (2003-12-12)	210a
The KND take it to the skies to stop the DCFDTL's birthday cake.
23b	10b	"Operation: S.P.A.C.E." "Sister's Playful Anarchy Causes Emergency"	Mr. Warburton & Mo Willems	Maurice Fontenot & Bob Suarez	December 12, 2003 (2003-12-12)	210b
After a spaceship crash caused by Numbuh 3's sister, the KND search an abandoned prisoner transport and discover that they're not alone.
24a	11a	"Operation: B.E.A.C.H." "Boys Enthusiastically Attempt Chivalrous Heroics"	Mo Willems & Mr. Warburton	Kim Arndt & Jesse Schmal	May 21, 2004 (2004-05-21)	211a
A king forces Numbuh 3 to marry him, but she agrees because she thinks they're pretending. Meanwhile, Numbuh 4 will fight King Sandy for Numbuh 3.
24b	11b	"Operation: U.N.D.E.R.C.O.V.E.R." "Unusual New Defector Eagerly Reveals Coffee Operation's Vital Enemy Relevance"	Mo Willems & Mr. Warburton	Matt Peters & Abigail Nesbitt	May 21, 2004 (2004-05-21)	211b
The KND try to close down a coffee drilling rig with a surprising ally, Lenny, one of the DCFDTL.
25a	12a	"Operation: D.O.G.F.I.G.H.T." "Duelling Over Gooey Frankfurters Invariably Gives Hoagie Trouble"	Mo Willems & Mr. Warburton	Guy Moore & Quack Leard	May 28, 2004 (2004-05-28)	212a
Numbuh 2 is shot out of the sky by another pilot countless times, who he thinks is a threat.
25b	12b	"Operation: T.R.I.P." "Twins Reconnaissance Increases Peril"	Mo Willems & Mr. Warburton	Maurice Fontenot & Bob Suarez	May 28, 2004 (2004-05-28)	212b
Numbuh 3 is followed by the ITFBTM (Interesting Twins From Beneath the Mountain), the cousins of DCFDTL, when she goes to Japan, so they can infiltrate the Japanese KND headquarters.
26	13	"Operation: E.N.D." "Everyone Nearly Decommissioned"	Mo Willems & Mr. Warburton	Matt Peters, Kim Arndt, Abigail Nesbitt, & Jesse Schmal	June 4, 2004 (2004-06-04)	213
Numbuh 86 arrives at the KND treehouse and captures Numbuh 2, 3, 4, and 5 for decommissioning. Numbuh 1, having previously eluded Numbuh 86, immediately sets out to determine who's ordering the wrongful decommissioning of scores of KND operatives.

Season 3 (2004)

No. overall	No. in season	Title	Written by	Storyboarded by	Original air date	Prod. code
27	1	"Operation: F.U.T.U.R.E." "Female's Utopian Trap Unleashes Reprehensible Evil"	Mo Willems & Mr. Warburton	Kim Arndt, Matt Peters, Jesse Schmal, & Abigail Nesbitt	June 11, 2004 (2004-06-11)	301
Numbuh 4 learns he is to be sent to a boarding school - but he is not worried, as he's always escaped from them before. However, he then learns that the school is being run by an evil kid called "Madame Margaret", a girl who is getting high-tech aid from none other than her future self. Madame Margaret's abominable plan is to create a twisted utopia where girls rule the world, using a demonic weapon called the girlifying ray that can turn anything feminine. The team does not have much chance to stop this until they receive aid from Numbuh 4's own future self. Now the team must defeat her and save the future.
28a	2a	"Operation: A.F.L.O.A.T." "Agents Feared Lost on Awful Tide"	Mr. Warburton & Mo Willems	Guy Moore & Quack Leard	June 18, 2004 (2004-06-18)	302a
The KND crashland into a sea of asparagus, and find out that they have more to worry about than staying afloat.
28b	2b	"Operation: L.E.A.D.E.R." "Lizzie Ethusiastically Assumes Daring Executive Role"	Mo Willems & Mr. Warburton	Maurice Fontenot & Bob Suarez	June 18, 2004 (2004-06-18)	302b
Lizzie Devine takes over the KND, and puts herself in Numbuh 1's place.
29a	3a	"Operation: U.T.O.P.I.A." "Uncovering The Only Perfect Island Accidentally"	Mo Willems & Mr. Warburton	Kim Arndt & Jesse Schmal	June 25, 2004 (2004-06-25)	303a
Numbuh 1 discovers an island paradise populated by kids. Numbuh 1 finds a perfect island, with much candy, fun and no adults. However, he deduces something unusual is happening and has to do with Chester's Happy Headband.
29b	3b	"Operation: R.O.B.B.E.R.S." "Rather Ornery Bandits Burglarize Educationally Required Schoolwork"	Mr. Warburton & Mo Willems	Matt Peters & Abigail Nesbitt	June 25, 2004 (2004-06-25)	303b
The Six-Gum Gang is stealing everyone's homework on a school bus for the DCFDTL.
30	4	"Operation: F.O.U.N.T.A.I.N." "Figure Out Unusual Nerd's Tantalizing And Impossible Necessity"	Mr. Warburton & Mo Willems	Guy Moore, Maurice Fontenot, Quack Leard, & Bob Suarez	July 9, 2004 (2004-07-09)	304
The DCFDTL kidnap the team's classmate, a nerdy, spit-talking girl named 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 Leaky-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.
31a	5a	"Operation: B.U.T.T." "Blackmail Uncovers Titanic Tush"	Mo Willems & Mr. Warburton	Kim Arndt & Jesse Schmal	July 16, 2004 (2004-07-16)	305a
The DCFDTL plants Numbuh 1 from his swim trunks and get photos of his disproportionately huge buttocks. They black mail him with them.
31b	5b	"Operation: T.R.A.I.N.I.N.G." "Tiny Recruits Ambushed In Nefarious Invasion Need Guts"	Mo Willems & Mr. Warburton	Matt Peters & Abigail Nesbitt	July 16, 2004 (2004-07-16)	305b
Tommy, Sonia, and Lee find that the training simulations in the Arctic Base are real.
32a	6a	"Operation: A.R.C.H.I.V.E." "Ancient Recorded Children's History Is Very Enlightening"	Mr. Warburton & Mo Willems	Guy Moore & Quack Leard	July 23, 2004 (2004-07-23)	306a
An archive is shown of the origin and story creation of adults, and their rebellion of children. Numbuh 1 narrates on how adults were created, how they took control, and families were made. The story takes its format from the segment The Second Renaissance from The Animatrix.
32b	6b	"Operation: S.L.U.M.B.E.R." "Stupid Little Undercover Mission Becomes Excitingly Romp"	Mr. Warburton, Mo Willems, & Alison Wilgus	Maurice Fontenot & Bob Suarez	July 23, 2004 (2004-07-23)	306b
Numbuh 86 is having a top-secret girls-only mission. Numbuh 4 is willing to find out what the mission is all about even if it means having to put on a little make-up. It turns out to only be a slumber party, but then it turns into a real mission.
33a	7a	"Operation: P.I.N.K.E.Y.E." "Private Investigator's New Kase Extra Yucky Epidemic"	Mo Willems & Mr. Warburton	Matt Peters & Abigail Nesbitt	July 30, 2004 (2004-07-30)	307a
Numbuh 2 investigates a pink eye outbreak in Gallagher Elementary in a noir style. An epidemic of conjunctivitis (pink-eye) has taken several victims. Numbuh 2 must investigate if the cases are coincidental or if a certain nurse is causing them.
33b	7b	"Operation: K.A.S.T.L.E." "Kuki And Sister Torpedo Loathsome Engagement"	Mr. Warburton, Mo Willems, & Alison Wilgus	Kim Arndt & Jesse Schmal	July 30, 2004 (2004-07-30)	307b
Numbuh 3 is forced to be married to King Sandy (again) when she is at a Rainbow Monkey theme park, but the others will not believe her.
34	8	"Operation: G.R.A.D.U.A.T.E.S." "Gargantuan Ray's Advance Decimates Unprepared And Terrified Escaping Soldiers"	Mo Willems & Mr. Warburton	Maurice Fontenot, Guy Moore, Bob Suarez, & Quack Leard	August 6, 2004 (2004-08-06)	310
The Code Module is recovered by Sector V in time for Tommy to graduate. However, the information inside of it is used by Father to turn every single operative into an animal, leaving Tommy the last one who's not transformed into an animal since he removed the DNA from the Code Module in order to save the KND.
35a	9a	"Operation: C.A.K.E.D.-T.H.R.E.E." "Commandos Attempt Kapturing Enemy Dessert - They Have Real Extreme Eggravation"	Billy Aronson, Mo Willems, & Mr. Warburton	Guy Moore & Quack Leard	August 6, 2004 (2004-08-06)	308a
It is the DCFDTL's birthday once again, and as always, the KND go to rob their nemeses of their ever-delicious birthday cake. However, their plan to neutralize them by egging them goes wrong as chicks hatch from every single egg.
35b	9b	"Operation: L.O.C.K.D.O.W.N." "Lurking Otherworldly Childhood Kalamity Delivers Ouchies When Naughty"	Mr. Warburton & Mo Willems	Maurice Fontentot & Bob Suarez	August 6, 2004 (2004-08-06)	308b
Numbuh 5 tries to find an intruder in the KND treehouse. Numbuh 1 orders a complete lock-down of the treehouse but the enemy is already inside, and one by one the operatives are getting spanked. In the end the KND start spanking!
36a	10a	"Operation: H.U.G.S." "Humongously Unwieldy Gorilla Showdown"	Mo Willems & Mr. Warburton	Kim Arndt & Jesse Schmal	August 13, 2004 (2004-08-13)	309a
Numbuh 4's disgust at anything Rainbow Monkey only increases when he finds himself trapped on Rainbow Monkey Island with a gargantuan, monstrous Rainbow Monkey Kong. He tries to teach it to be a dangerous monster, but all it can do is love.
36b	10b	"Operation: J.E.W.E.L.S." "Juvenile Escapes With Extremely Luscious Sweet"	Mo Willems & Mr. Warburton	Matt Peters & Abigail Nesbitt	August 13, 2004 (2004-08-13)	309b
Numbuh 5 journeys to the exotic Al-Shugar Desert to recover her stolen candy, the Blurpleberry Supreme, and discovers she's not the only one searching for the powerful, mystical candy.
37a	11a	"Operation: T.R.I.C.K.Y." "Trivial Rival Instigates Candy Krazy Yearning"	Mo Willems & Mr. Warburton	Kim Arndt & Jesse Schmal	October 29, 2004 (2004-10-29)	311a
Numbuh 4 tries to get his candy back from Stickybeard on Halloween.
37b	11b	"Operation: U.N.C.O.O.L." "Undead's Nocturnal Craving Overtakes Operative's Love"	Mr. Warburton & Mo Willems	Matt Peters & Abigail Nesbitt	October 29, 2004 (2004-10-29)	311b
The KND try to find Numbuh 78 in a treehouse infested with Nerd Zombies.
38a	12a	"Operation: P.R.E.S.I.D.E.N.T." "Protection Requires Extreme Skill Involving Democratic Elected Notable's Transportation"	Mo Willems & Mr. Warburton	Guy Moore & Quack Leard	November 5, 2004 (2004-11-05)	312a
The KND try to get the Fourth Grade Class President to his Town Council meetings safely.
38b	12b	"Operation: H.O.S.P.I.T.A.L." "Hurt Operative Safely Protected In Totally Antiseptic Location"	Mr. Warburton & Mo Willems	Maurice Fontenot & Bob Suarez	November 5, 2004 (2004-11-05)	312b
An important operative suffers an accident on a dangerous mission and is sent to the hospital, but one ex-KND member is out to scramblify his brain, and Sector V must make sure he is safe.
39a	13a	"Operation: S.P.R.O.U.T." "Sickening Produce Removal Operation Ultra Tricky"	Mo Willems & Mr. Warburton	Matt Peters & Abigail Nesbitt	November 12, 2004 (2004-11-12)	313a
Numbuh 4 accidentally eats a brussels sprout, sending the rest of the KND on an emergency Fantastic Voyage to stop the dreaded vegetable from being digested.
39b	13b	"Operation: H.O.U.N.D." "Homework Obliterated Using Nefarious Dog"	Mo Willems & Mr. Warburton	Kim Arndt & Jesse Schmal	November 12, 2004 (2004-11-12)	313b
Numbuh 5 comes face to face with a vicious dog who is always eating her homework.

Season 4 (2004-05)

No. overall	No. in season	Title	Written by	Storyboarded by	Original air date	Prod. code
40a	1a	"Operation: R.A.B.B.I.T." "Rescue Aids Beloved Bunny In Trouble"	Mr. Warburton & Mo Willems	Kim Arndt & Jesse Schmal	November 19, 2004 (2004-11-19)	401a
Numbuhs 2 and 5 travel through the school jungle gym to help find the First Grade's missing pet bunny, Mr. Fluffalupagus, from Heinrich von Marzipan, who kidnapped him and plans on making chocolate bunnies from real bunnies by dipping them into the chocolate volcano.
40b	1b	"Operation: F.L.U.S.H." "Foolish Loser Undoes Sinister Hopes"	Mo Willems & Mr. Warburton	Maurice Fontenot & Bob Suarez	November 19, 2004 (2004-11-19)	401b
Mr. Boss, Knightbrace, Mr. Wink & Mr. Fibb, and the Crazy Old Cat Lady are take over the treehouse of Sector V, and the Toiletnator tries to get rid of the KND for good, or so he thinks.
41a	2a	"Operation: F.O.O.D.F.I.T.E." "Fiendish Old Ogre's Disgusting Food Is Thrown Everywhere"	Mr. Warburton & Mo Willems	Kim Arndt, Jesse Schmal, & Anthony Davis	November 26, 2004 (2004-11-26)	402a
Grandma Stuffum forces to kids to eat her food.
41b	2b	"Operation: C.L.U.E.S." "Cutlery's Location Uncovers Elementary Solution"	Mo Willems & Mr. Warburton	Matt Peters & Abigail Nesbitt	November 26, 2004 (2004-11-26)	402b
Numbuh 3's family are invited to Numbuh 2's house, where Mrs. Gilligan is hoping to get a promotion out of this. It is later revealed that the Rainbow Monkey is stabbed by a fork.
42a	3a	"Operation: N.U.G.G.E.T." "Numbuh Uncovers Glistening Golden Edible Treat"	Mo Willems & Mr. Warburton	Guy Moore & Quack Leard	December 3, 2004 (2004-12-03)	403a
Numbuh 4 tries to protect chicken nugget mines from the DCFDTL.
42b	3b	"Operation: M.A.C.A.R.R.O.N.I." "Museum's Artwork Cruelly And Recklessly Ripped Off Nearly Impossibly"	Mo Willems & Mr. Warburton	Maurice Fontenot & Bob Suarez	December 3, 2004 (2004-12-03)	403b
The KND try to protect the Macaroni Museum of Art from being ransacked, with the worst KND operative ever, Marty Sullivan, AKA Numbuh 13, on their side.
43	4	"Operation: P.O.O.L." "Prevent Opposite Operative's Larceny"	Mo Willems & Mr. Warburton	Kim Arndt, Matt Peters, Jesse Schmal, & Jesse Schmal	December 10, 2004 (2004-12-10)	404
Numbuh 4's new pool is actually a portal to an alternate version of the KND Universe where their counterparts known as the DNK (Destructively Nefarious Kids) are evil. The kids do all the adults job whereas the adults sit around and play video games. While swimming in the pool, Lizzie is captured by an evil opposite of herself, Eizzil Enived (Lizzie's name backwards), and Nigel follows the captor back to her home universe. An 2 Part episode.
44	5	"Operation: C.A.K.E.D.-F.O.U.R." "Children's Annual Kompetition Exposes Devilishly For One Ultimate Race"	Mr. Warburton & Mo Willems	Guy Moore, Maurice Fontenot, Quack Leard, & Bob Suarez	February 21, 2005 (2005-02-21)	405
The KND tube race to get the DCFDTL's delicious birthday cake. A Two Part Episode.
45a	6a	"Operation: S.I.T.T.E.R." "Sweetheart's Involvement Transforms The Evening's Reality"	Mo Willems & Mr. Warburton	Kim Arndt & Jesse Schmal	April 29, 2005 (2005-04-29)	406a
Numbuh 2's mom has to go out so she finds Cree to babysit Tommy and him.
45b	6b	"Operation: S.A.T.U.R.N." "Stuff Abducted Turns Up Revolving Nowhere"	Mo Willems & Mr. Warburton	Matt Peters & Abigail Nesbitt	April 29, 2005 (2005-04-29)	406b
The KND try to stop a mysterious being from collecting all the Rainbow Monkeys in the world-- including Numbuh 3's beloved ones.
46a	7a	"Operation: C.H.O.C.O.L.A.T.E." "Candy Hunting Operative's Chocolatized Opponent Literally A Touchy Enemy"	Mo Willems & Mr. Warburton	Maurice Fontenot & Bob Suarez	May 6, 2005 (2005-05-06)	407a
Numbuh 5 tries to stop Heinrich, now a chocolate monster (Recapping the aftermath of "Operation: R.A.B.B.I.T."), from destroying her friends.
46b	7b	"Operation: M.A.T.A.D.O.R." "Misbehaving Agent Teases Adults During Organized Recreation"	Mo Willems & Mr. Warburton	Guy Moore & Quack Leard	May 6, 2005 (2005-05-06)	407b
Numbuh 4 must choose between his job as a KND operative or be a bully fighter.
47a	8a	"Operation: L.U.N.C.H." "Lizzie Underappreciates Nigel's Chowtime Hardworkingness"	Mr. Warburton & Mo Willems	Matt Peters & Abigail Nesbitt	May 13, 2005 (2005-05-13)	408a
Lizzie feels that Nigel works too much during lunch, so she forces him to have lunch with her, but he cannot work. Meanwhile, a group of lunch thieves and their leader Robin Food break into the cafeteria and start stealing everyone's lunches, including Lizzie and Numbuh 1's.
47b	8b	"Operation: M.U.N.C.H.I.E.S." "Morning Uncovers Needed Crunchiness Hidden In Enemy Store"	Mo Willems & Mr. Warburton	Kim Arndt & Jesse Schmal	May 13, 2005 (2005-05-13)	408b
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 is as popular with the bad guys as it is with the KND!
48a	9a	"Operation: K.N.O.T." "Kids' Necks Overwhelmingly Tied"	Mr. Warburton & Mo Willems	Guy Moore & Quack Leard	May 20, 2005 (2005-05-20)	409a
Numbuh 1 battles a group of snake ties with an adult against them.
48b	9b	"Operation: C.L.O.S.E.T." "Child Lost On Severely Elevated Tundra"	Mo Willems & Mr. Warburton	Maurice Fontenot & Bob Suarez	May 20, 2005 (2005-05-20)	409b
The KND try to rescue a boy from a monster in the closet.
49	10	"Operation: S.N.O.W.I.N.G." "Sickly Nigel Opposes Warped Incumbent's Nasty Grasp"	Mo Willems & Mr. Warburton	Matt Peters, Kim Arndt, Abigail Nesbitt, & Jesse Schmal	May 27, 2005 (2005-05-27)	410
Jimmy Nixon McGarfield (the fourth-grade president) forces other kids back into school on a first snow day for a special assembly after Numbuh 1 is too sick to play. An Two Part Episode.
50	11	"Operation: M.A.U.R.I.C.E." "Mature Agent Undergoes Reprogramming Into Childhood's Enemy"	Mo Willems & Mr. Warburton	Maurice Fontenot, Guy Moore, Bob Suarez, & Jesse Schmal	July 8, 2005 (2005-07-08)	411
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 do not recruit him. A 2 Part Episode.
51a	12a	"Operation: L.O.V.E." "Little Operative Very Emotional"	Mo Willems & Mr. Warburton	Matt Peters & Abigail Nesbitt	July 15, 2005 (2005-07-15)	412a
Numbuh 3 stars in a romantic musical as the lead girl, but when Numbuh 4 interrupts the play, it becomes a real war on stage between the DCFDTL and the KND.
51b	12b	"Operation: C.O.U.C.H." "Creepy Otherworld Under Cushiony Heap"	Mo Willems & Mr. Warburton	Kim Arndt & Quack Leard	July 15, 2005 (2005-07-15)	412b
Numbuh 4 tries to battle it out with an adult in his couch.
52a	13a	"Operation: D.O.D.G.E.B.A.L.L." "Dangerous Old Dude's Game Excellently Beats All Little Losers"	Mo Willems & Mr. Warburton	Guy Moore & Jesse Schmal	July 22, 2005 (2005-07-22)	413a
Numbuh 4 tries to battle against the Dodgeball Wizard for his rank.
52b	13b	"Operation: F.E.R.A.L." "Friends Extract Really Ape-ifed Leader"	Mo Willems & Mr. Warburton	Maurice Fontenot & Bob Suarez	July 22, 2005 (2005-07-22)	413b
Numbuh 1 and Sector V are on Rainbow Monkey Island trying to take "The Code" from the Delightful Children.

Season 5 (2005-06)

No. overall	No. in season	Title	Written by	Storyboarded by	Original air date	Prod. code
53	1	"Operation: E.L.E.C.T.I.O.N.S." "Enemy Launches Evil Campaign To Inflame Our Noble School"	Mr. Warburton & Andy Rheingold	Kim Arndt, Matt Peters, Jesse Schmal, & Abigail Nesbitt	September 30, 2005 (2005-09-30)	502
The KND are up against more than they bargained for when they try to prevent the DCFDTL for dashing the school elections, especially when the situation involves 8th graders.
54a	2a	"Operation: D.U.C.K.Y." "Dirty Unwashed Captain's Kowardly Yacht"	Mr. Warburton & Andy Rheingold	Guy Moore & Quack Leard	October 14, 2005 (2005-10-14)	503a
Tommy embarks on a journey with a cowardly cleanliness-fearing captain in the bath waters.
54b	2b	"Operation: D.I.A.P.E.R." "Drooling Infants Awarded Perilous Emergency Rescue"	Andy Rheingold & Mr. Warburton	Maurice Fontenot & Bob Suarez	October 14, 2005 (2005-10-14)	503b
The KND go to rescue babies from the hospital to protect them from becoming automatic adults. Numbuh 5 thinks the others are insane and tries to bring them back, but the babies themselves have other plans.
55a	3a	"Operation: B.U.L.L.I.E.S." "Big Ugly Lunks Like Intimidating Entrapped Scaredycats"	Andy Rheingold & Mr. Warburton	Kim Arndt & Anthony Davis	October 21, 2005 (2005-10-21)	504a
Numbuhs 2 and 4 try to escape from an island inhabited by bully monsters.
55b	3b	"Operation: F.I.S.H.Y." "Feline Invaders Swarm Headquarters Yearningly"	Mr. Warburton & Andy Rheingold	Matt Peters & Abigail Nesbitt	October 21, 2005 (2005-10-21)	504b
Numbuhs 2 and 4 travel to a certain place in the treehouse to give Numbuh 3's goldfish a proper funeral, while Numbuhs 1 and 5 try to win her a new one from a rigged carnival game.
56a	4a	"Operation: B.R.E.A.K.U.P." "Boys Ruin Everything And Kreate Upset People"	Andy Rheingold & Mr. Warburton	Maurice Fontenot & Bob Suarez	October 28, 2005 (2005-10-28)	505a
Numbuh 4 uncovers a game in which priceless vases are broken.
56b	4b	"Operation: S.A.F.A.R.I." "Shots Are Fired At Rear Incessantly"	Mr. Warburton & Andy Rheingold	Jesse Schmal & Anthony Davis	October 28, 2005 (2005-10-28)	505b
Numbuh 1 tries to flee from a doctor who wants to cure his moosebumps.
57	5	"Operation: N.A.U.G.H.T.Y." "Ninnies Almost Undo Greatest Holiday This Year"	Mr. Warburton & Mo Willems	Matt Peters, Kim Arndt, Abigail Nesbitt, & Quack Leard	December 6, 2005 (2005-12-06)	501
The KND try to save Christmas when the DCFDTL frame them for the theft of a gift-creating contraption called the "REINDEER System" created by Santa.
58a	6a	"Operation: V.I.R.U.S." "Very Icky Research Under Sea"	Andy Rheingold & Mr. Warburton	Kim Arndt & Jesse Schmal	January 14, 2006 (2006-01-14)	506a
Numbuh 5 tries to save her sister Cree from a contagious disease that KND have made in revenge for creating chicken pox.