List of Codename: Kids Next Door episodes

Professor XXXL, a mad scientist, hires Kenny and his pet chimpanzee Chimpy to catalog the newest additions to his collection of deadly diseases while he goes off to fight the local parent–teacher association. Kenny has to keep the laboratory in order while Chimpy wreaks havoc with the disease specimens.

Note: The pilot and the only produced episode for Warburton's cancelled 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.

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 1 suggests employing the Kid-A-Pault, a Kids Next Door weapon to put an end to this tyranny...but their plan fails, leaving them to find other means of battling Mr. Wink and Mr. Fibb.

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.

Numbuh 4 forces the other operatives to build a "clam cannon" when Numbuh 1 leaves.

The hamsters that power Sector V's weapons suddenly decide to go on vacation, leaving the Treehouse powerless! 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.

The Kids Next Door find a new enemy in the dental hygiene-obsessed vigilante, Knightbrace, after he attacks Numbuh 3 on the way back from a trip to the candy store.

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.

An adult named Lasso Lass (who keeps acting like a kid) wants to help Sector V defeat Mr. Wink and Mr. Fibb.

When turnips are found everywhere in Sector V's treehouse, they go to the source: a giant turnip, to defeat it.

After Numbuh 2 beats a mini-golf champion at mini-golf, the golfer shrinks Numbuh 2, and many sights from around the world.

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 co-workers to Pluto.

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. But is there more to this mysterious operative than meets the eye?

The Delightful Children from Down the Lane attack Sector V's headquarters with an infestation of hair-eating lice.

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.

A fly finds its way into Sector V's headquarters.

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.

A villainous half-man, half-baby named Mr. B gives the Kids Next Door, a television series of their own.

A lost baby skunk interferes with a mission to rescue brainwashed campers.

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.

Numbuh 2's little brother, Tommy (who is shunned by Sector V), joins forces with a villain, Common Cold.

Two parental villains are stupefying KND operatives around the world; an operative named Chad (Numbuh 274) enlists the help of Sector V.

Sector V tries to destroy all the pianos in a truck with a hamster that acts as Numbuh 4's replacement.

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.

Numbuh 5 tries to keep the treehouse quiet, so Numbuh 1 can sleep.

The boss of Rainbow Monkeys Inc. uses Numbuh 3 to find real Rainbow Monkeys for him.

The frustrated Delightful Children from Down the Lane turn to their Father for help destroying Sector V. Numbuh 1 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.

Numbuh 4 is mistaken for a cat by an old lady after being stuffed in a kitty costume from his dispute with Numbuh 3.

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.

Count Spankulot joins the KND and turns from his evil ways.

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.

Numbuhs 2 and 1 try to find out about Cree's B.R.A. (Battle Ready Armor).

Numbuh 2's grandmother joins forces with her friends to locate a pudding supply, which was trapped between the surface of the treehouse.

Numbuh 4 tries to sneak into an R-rated movie to find it is a secret villain meeting.

Numbuh 3 is sent on a mission for her birthday: to get a fast food meal. The restaurant is later revealed to actually be for sharks, with kids being murdered for food.

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.

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.

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.

Numbuh 2 is turned into a teenager when an experiment goes horribly wrong, but gets smooth with Numbuh 5's older sister.

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.

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.

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.

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 the Professor XXXL wanted: a test subject to his snow cones, since Numbuh 1 is immune to brain freeze.

The KND each give an account of what happened to an ordinary package.

Numbuh 1's underwear is attacking him after finding out how careless children are with underwear.

The KND take it to the skies to stop the DCFDTL's birthday cake.

After a spaceship crash caused by Numbuh 3's sister, the KND search an abandoned prisoner transport and discover that they're not alone.

A king kidnaps Numbuh 3 and forces her to marry him, but she agrees because she thinks they're pretending. Meanwhile, Numbuh 4 will fight King Sandy for Numbuh 3 to save her.

The KND try to close down a coffee drilling rig with a surprising ally, Lenny, one of the DCFDTL.

Numbuh 2 is shot out of the sky by another pilot countless times, who he thinks is a threat.

Numbuh 3 is followed by the ITFBTM (Interesting Twins from Beneath the Mountain), the cousins of the DCFDTL, when she goes to Japan, so they can infiltrate the Japanese KND headquarters.

Numbuh 86 arrives at the KND treehouse and captures Numbuhs 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.

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.

The KND crashland into a sea of asparagus, and find out that they have more to worry about than staying afloat.

Lizzie Devine takes over the KND, and puts herself in Numbuh 1's place.

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.

The Six-Gum Gang is stealing everyone's homework on a school bus for the DCFDTL.

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.

The DCFDTL plants Numbuh 1 from his swim trunks and get photos of his disproportionately huge buttocks. They black mail him with them.

Tommy, Sonia, and Lee find that the training simulations in the Arctic Base are real.

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.

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.

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.

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.

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 his DNA from the Code Module in order to save the KND.

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.

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!

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.

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.

Numbuh 4 tries to get his candy back from Stickybeard on Halloween.

The KND try to find Numbuh 78 in a treehouse infested with Nerd Zombies.

The KND try to get the Fourth Grade Class President to his Town Council meetings safely.

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.

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.

Numbuh 5 comes face to face with a vicious dog who is always eating her homework.

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.

Mr. Boss, Knightbrace, Mr. Wink & Mr. Fibb, and the Crazy Old Cat Lady are taking over the treehouse of Sector V, and the Toiletnator tries to get rid of the KND for good, or so he thinks.

Gramma Stuffum forces the kids to eat her food.

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.

Numbuh 4 tries to protect chicken nugget mines from the DCFDTL.

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.

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.

The KND tube race to get the DCFDTL's delicious birthday cake.

Numbuh 2's mom has to go out, so she finds Cree to babysit Tommy and him.

The KND try to stop a mysterious being from collecting all the Rainbow Monkeys in the world-- including Numbuh 3's beloved ones.

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.

Numbuh 4 must choose between his job as a KND operative or be a bully fighter.

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 everybody's lunches, including Lizzie and Numbuh 1's.

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!

Numbuh 1 battles a group of snake ties with an adult against them.

The KND try to rescue a boy from a monster in the closet.

Jimmy Nixon McGarfield (the fourth-grade president) forces the other kids back into school on a first snow day for a special assembly after Numbuh 1 is too sick to play.

Maurice, a member of the Kids Next Door is decommissioned. Numbuh 5 is saddened by it, and suggests that they monitor Maurice to make sure the teenagers do not recruit him.

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.

Numbuh 4 tries to battle it out with an evil adult in his couch.

Numbuh 4 tries to battle against the Dodgeball Wizard for his rank.

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

Tommy embarks on a journey with a cowardly cleanliness-fearing captain in the bath waters.

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.

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.

Numbuhs 2 and 4 try to escape from an island inhabited by bully monsters.

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.

Numbuh 4 uncovers a game in which priceless vases are broken.

Numbuh 1 tries to flee from a doctor who wants to cure his moosebumps.

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.

Parodies of: Marvel Comics, specifically X-Men and The Fantastic Four along with a Stan Lee-like narrator.

Numbuh 5 tries to save her sister Cree from a contagious disease, that the KND have made in revenge for creating chicken pox.

The KND try to close up a virus being spread in a KND undersea laboratory.

The KND try to make a present for the Global KND anniversary.

Numbuhs 2 and 3 try to guide a plane full of hamsters. Meanwhile, Lizzie is jealous of a girl Numbuh 1 is hanging out with, and races over to try to keep Nigel from "dating" her.

Once again, a special birthday cake is being made for the Delightful Children from Down the Lane. The KND take a trip to the Alamode where tour guide Numbuh 50 Million B.C. tells them about the 1800s KND operatives who were determined to steal the Annoyingly Cute Triplets Who Lived Upon the Hill's Birthday Cake, a delicious cake made by their mother. However, in their attempt to get the recipe, an ice cream trap was set off, freezing over 5000 KND operatives. It took 10 years to thaw them out, and all were decommissioned since they were technically too old to be KND. All were found except Numbuh 19th Century, the operative sent in to get the recipe and set off the trap, until the current KND recently discovered him. After being thawed out, he's confused by the new modern era, especially with the fact there are now girls in the KND.

Guest voice: Josh Peck as Numbuh 50 Million B.C.

A boy named Bobby tries to get through a training program with flying colors.

Numbuh 1, Numbuh 83, and Numbuh 84 try to save Numbuh 86's brother, Shaunie, from getting a haircut from his father. Unfortunately, they end up in combat with Shaunie's dad, who is none other than Mr. Boss.

A clown tries to get Numbuh 2 as he plays many jokes.

Numbuh 3's sister, Mushi, tries to get revenge on Numbuh 2 after being grounded for life for transferring Count Spankulot's power onto her Rainbow Monkey.

Numbuh 3 is cold, so she turns up the heat even though she is not allowed by her father. It then gets very warm that the KND have to turn down the heating before Numbuh 3's house explodes. Meanwhile, Numbuh 4 watches over Mr. Sanban.

Numbuh 4 releases Mr. Boss, Stickybeard, Count Spankulot, and Soccer Mom from their cells. At his home he gives them sodas which he tricks them into thinking that they were poisoned, and tells them that he'll give them the antidote if they beat his dad in a bowling tournament.

Heinrich comes back, but this time needs to be saved by Numbuh 5 as she recruits Stickybeard and his band of candy pirates to help her rescue Heinrich from Black John Licorice and his pirates.

Numbuh 3 takes her "My First Rainbow Monkey" to a Rainbow Monkey Retirement Home, but it seems to be more than what it appears to her and Numbuh 5.

Every year, the KND choose someone to be "IT" which involves a game of tag to choose the next Supreme Leader, so Numbuh 362 sets up the game after she decides to resign due to being tired of the job. However, when Numbuh 2 accidentally tags Father, he becomes Supreme Leader. Numbuh 1 and Numbuh 362 then must stop him before he wipes out the entire KND using broccoli.

When Numbuh 1 is taken to England, someone gives him a book, resulting in Numbuh 1 getting followed by 3 kids.

[NOTE: This episode takes place before Operation: Z.E.R.O. as it alludes to the Book of the KND (an important artifact in the film).]

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

When a kid-friendly senator receives a funding of approximately eleventy-billion dollars, he uses it to build an army of Safety-Bots, to make the world a safe place for children. However, the robots grow more and more extreme in their actions, eventually planning to eliminate adults, and cover the Earth in bubble wrap.

When salad oil is discovered in the school playground, Numbuh 1 must find a way to save recess, while still keeping a promise to Lizzie.

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.

Numbuh 1 wakes up to discover that he is the president of the United States in an alternate dimension, who is about to sign the Bill of No Rights for Kids.

Amerigo Vespinaccio tries to spread spinach throughout the school, and Sector V must stop him.

Numbuh 2 attempts to deliver the fourth grade president's message.

Numbuh 20,000 and his Squid Squad work with Sector V to destroy the bridge leading into Le Sissie, a store in the mall that sells horrible back-to-school clothes for kids.

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.

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.

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

With Father away at Saratoga Springs for the day on orders from his doctor, 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.

Numbuh 5 goes into the Haunted Doghouse to get Sector V's cinder block back, but later comes out with different results.

Numbuhs 3 and 4 are launched into space to break the "Ridiculous" space barrier, but blackout in mid-flight and wake up on a world ruled by anthropomorphic, talking Rainbow Monkeys.

This episode illustrates a day at the annual kids' 2x4 tech science fair. Numbuh 2 is present, shoving his "I Can't Believe It's Not Booger" product down the judges' throats.

Continues from Operation: S.C.I.E.N.C.E.. When a mysterious enemy starts kidnapping KND scientists, Sector V sends Numbuh 2 into hiding at an Amish sector to his extreme dismay.

Lizzie has always had to compete with the Kids Next Door for Nigel's attention, and she thinks Nigel has found a new girlfriend.

Heinrich uses a ritual involving sacred golden caramels to take away the qualities the Sector V operatives value the most (Numbuh 1's leadership, Numbuh 2's intellect, Numbuh 3's giddiness, Numbuh 4's toughness, and Numbuh 5's coolness). Numbuh 5 eventually teaches Heinrich that he needs to share his candy to revert to his original form, finally learning to do, it is revealed that Heinrich is actually a girl named Henrietta. Who's most precious quality, her femininity, was taken away in the ritual many years ago.

Adults send Numbuh 4's family to the Moon to colonize it. However, Sector V diverts the colony to Hollywood, where they stage a fake colonization, tricking the Beetles family and the adults at mission control to prevent them from discovering the KND Moonbase.

The KND and the Teens are about to sign the "You don't mess with us-We don't mess with you" Kid-Teen treaty. It is going to be signed by Numbuh 8000 (KND and the Teens leader), but it turns out to be a trap for the KND, making Numbuhs 1 and 274 set out to prevent it after being falsely convicted by the KND.

The enemies of the Kids Next Door, led by Benedict Wigglestein (Father), join forces to resurrect the ultimate evil, Grandfather, a tyrant who once ruled the world many years ago when most of the villains were children themselves. However, Grandfather disgraced him that he cannot even try to destroy the KND and the villains were quickly betrayed when they are turned into Senior Citizombies, creatures that are immortal and can transform any human being or any animal (can use the term: Senior Animal Zombies) into one of them and slaves who are forced to make tapioca to refuel Grandfather so he can find and destroy the Book of KND. Once the villains are zombified (but not the teenagers and babies), Grandfather unleashes his wrath on the world, transforming almost all of humanity into old beings, turning the KND tree houses into tapioca factories, and the Kids Next Door including the Gallagher Elementary School exclusive KND Operatives rallies in defense, but are quickly overrun and zombified. Numbuh 1 is the only surviving KND operative to locate the KND's only hope for salvation, the legendary hero Numbuh 0 who turned out to be Montgomery Uno, Numbuh 1's father. In the process, Numbuh 1 discovers shocking information about the KND, Father and the Delightful Children from Down the Lane, and even his own family. Realizing that he is the only one standing, he makes a daring task to find Numbuh 0 and to save the world.

Guest voice: Neil Ross as Grandfather.

• Note: This is a feature-length made-for-television movie, which take place between the events of the fifth and sixth seasons of the series.

While Billy's dad is underwear shopping, Billy, wearing his dad's lucky pants, accidentally rips them with Grim's scythe. Billy opens the door to his house suspecting the Powerpuff Girls, but the portal leads to the Sector V operatives instead. Numbuh 1 disguises as Billy while Billy is taken back to the Deep Sea Lab. Mandy, arriving at Billy's house knowing Numbuh 1 is not Billy, tortures Numbuh 1 into revealing the truth. Meanwhile, the Delightful Children from Down the Lane and Billy accidentally fuse with the scythe's power to create the Delightful Reaper. Mandy takes over the KND by fooling Numbuh 362 along with the entire KND, but Numbuh 5, knowing she is not Numbuh 1, is taken to the med lab. The Delightful Reaper assimilates nearly all of Endsville (including Numbuh 2) and grows more powerful and gigantic. Numbuh 1 and Grim try to get the KND to see the truth, but are imprisoned. Numbuh 5 escapes and finds Numbuh 1 and Grim. Grim and Numbuh 1 fuse with the Bone of Barnacles and become the Skeleton Samurai. Mandy, in her M.A.N.D.R.O.B.O.T. (Monkeys And Nice Dogs Relax On Bellies Of Turtles), fights the Delightful Reaper, and so does the Skeleton Samurai, but they cannot defeat it. Grim finds out that the pants belong to Billy's dad (which are shown to be immune to lasers, supernatural energies and mustard). Mandy is their only hope to defeat the Reaper, but instead she fuses with the Reaper. Billy's dad takes off the pants, and the Samurai Skeleton destroys the Delightful Reaper, freeing all of the assimilated children inside it. Mandy becomes furious with Numbuh 1 and Grim, and escapes to vow revenge. Numbuh 1 is mistaken to be Billy by Billy's dad, who punishes him for ruining his lucky pants, as Billy, on the other hand, disguises as Numbuh 1, causing the KND to throw various objects at him in response to prevent what happened that day.

Numbuhs 2–5 as adults are recommissioned by an unnamed, unseen interviewer and tell him what happened to Numbuh 1 on their final mission. They are told by the interviewer that the effects of decommissioning have been temporarily reversed so they could be interviewed regarding their final mission, in which Sector V and the younger Sector W compete in a scavenger hunt, alongside most of the series' characters, to win the Delightful Children's birthday cake. Though behind for most of the hunt, Sector V must aid Sector W when they go too far and try to steal Father's pipe. Numbuh 1 is then introduced to the secret organization behind the Splinter Cell: the Galactic KND, an intergalactic KND that battles adulthood on multiple planets, and that he has been selected to become the first operative from Earth. He is able to say goodbye to both his parents and to Sector V. At the end of the events of the film, it is revealed that after Numbuh 5 eventually resigns as the leader of Sector V once again, she and Numbuh 2 get married; Numbuhs 3 and 4 also get married. The interviewer is revealed to be Father in disguise. The series ends with Numbuh 5 pulling out a KND communicator, hinting that either she or the entire sector are all still KND operatives. She tells Numbuh 1 that they will meet him back on the Moonbase, revealing that they lied to Father about Numbuh 1 never being able to come back.

• Notes: The events of this special take place after the final episode of the series.