Episode 1
Operation R.A.B.B.I.T.
11m
Numbuhs 2 and 5 must rescue the first grade class's pet rabbit before it is turned into a chocolate bunny by Heinrich Von Marzipan.
Episode credits
Written by Mo Willems, Tom Warburton, Tom Eaton
TV series
Codename: Kids Next Door
2002TV-Y76 seasons8.2 / 10
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.
Streaming, rental and purchase options
Where to watch in United States
Checked Jul 22, 2026
Codename: Kids Next Door is available to stream on Tubi in United States. You can also buy it from Amazon, Apple TV, and Fandango at Home. Use the direct links below to open the provider.
Watch free
Synopsis
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.
Season 4 episodes
Choose an episode, then use the watch options above for the show.
Where to watch Codename: Kids Next Door
Episode 2
Operation: FLUSH
11m
The villains attempt to capture the KND Treehouse, but the Toilenator, trying to be helpful, only hinders their plans.
Episode credits
Written by Mo Willems, Tom Warburton
Episode 3
Operation F.O.O.D.F.I.T.E.
11m
The KND are dismayed to discover that Grandma Stuffum is the new cafeteria lunch lady and she's got some pretty nasty recipes to foist on her pint-sized nemeses.
Episode credits
Directed by Tom WarburtonWritten by Mo Willems, Tom WarburtonGuest stars Grey DeLisle
Episode 4
Operation: C.L.U.E.S.
11m
A dinner get-together between Numbuh 2 and Numbuh 3's respective families turns sour when Numbuh 3's Posh Party Rainbow Monkey doll is badly damaged with a fork in its back. Now it's up to Numbuh 2 to figure out the murderer of the doll.
Episode credits
Written by Mo Willems, Tom WarburtonGuest stars Candi Milo, Keone Young, Tara Strong
Episode 5
Operation N.U.G.G.E.T.
11m
Numbuh 4 discovers a chicken nugget that initiates a chicken nugget rush.
Episode credits
Directed by Tom WarburtonWritten by Mo Willems, Tom WarburtonGuest stars Keone Young
Episode 6
Operation: M.A.C.A.R.R.O.N.I.
11m
The Kids Next Door have the misfortune of swapping the Toilenator to Mr. Boss with the unlucky Numbuh 13, who informs the operatives of the adult villains' plans for a macaroni dinner by ransacking a museum of macaroni art.
Episode credits
Written by Mo Willems, Tom Warburton
Episode 7
Operation P.O.O.L.
22m
Numbuh 4's newly-installed backyard pool is the portal into an alternate dimension where everything is the opposite of everything in the real world.
Episode credits
Directed by Tom WarburtonWritten by Mo Willems, Tom WarburtonGuest stars Tom Kenny, Billy West, Jeff Bennett, Daran Norris
Episode 8
Operation C.A.K.E.D.-F.O.U.R.
22m
The Delightful Children From Down the Lane decide to give their birthday cake to the winner of the annual Tubathon race and everyone is eager to go for it. No one is more eager than Numbuh 2, who plans to use his old tube, Betsy, and "farfegtubing". But are the Delightfuls keeping their word about the cake or are they luring the competitors into a trap?
Episode credits
Directed by Tom WarburtonWritten by Mo Willems, Tom WarburtonGuest stars Maurice LaMarche, Candi Milo, Jeff Bennett, Dave Wittenberg
Episode 9
Operation S.I.T.T.E.R.
11m
The brothers Gilligan have gotten a new babysitter: the villainous Cree Lincoln! For Numbuh 2, this will either be a dream come true or a nightmare.
Episode credits
Directed by Tom WarburtonWritten by Mo Willems, Tom WarburtonGuest stars Candi Milo, Jason Harris, Jennifer Hale
Episode 10
Operation: S.A.T.U.R.N.
11m
Everyone's collections of Rainbow Monkey toys are mysteriously vanishing. The KND investigate and discover the toys revolving around the planet Saturn as its big ring!
Episode credits
Written by Mo Willems, Tom WarburtonGuest stars Daran Norris
Episode 11
Operation: C.H.O.C.O.L.A.T.E.
11m
Numbuh 5 goes to the planet Mars to pick up some marshmallows as part of dessert with her family after dinner. But upon her return, she discovers her family and friends are being menaced by an old foe who now is a mere shell of his old self.
Episode credits
Directed by Tom WarburtonWritten by Mo Willems, Tom WarburtonGuest stars Daran Norris
Episode 12
Operation: M.A.T.A.D.O.R.
11m
Numbuh 4 is forced to choose between helping the KND battle the villainous Soccer Mom or engaging at his new gig as a matador in the Bully Fights.
Episode credits
Written by Mo Willems, Tom Warburton, Alison Wilgus
Episode 13
Operation L.U.N.C.H.
11m
Lizzie had made a romantic lunch for both her and "Nigie", but it gets stolen by Robin Food and his Hungry Men, who rob from the young and give to the old.
Episode credits
Directed by Tom WarburtonWritten by Mo Willems, Tom WarburtonGuest stars Frank Welker, James Arnold Taylor, Candi Milo, Grey DeLisle, Matt Levin, Rob Paulsen, Roger Rose, Jennifer Hale
Episode 14
Operation: M.U.N.C.H.I.E.S.
11m
The KND discover that they're out of Rainbow Munchies cereal, so they try to go to a grocery store to get some more. But the only grocery store that sells such a product is the villains-only store called the Super-Villains Supermarket & Deli.
Episode credits
Written by Mo Willems, Tom WarburtonGuest stars Maurice LaMarche, Tom Kenny, Jeff Bennett, Daran Norris, Mark Hamill, Grey DeLisle
Episode 15
Operation K.N.O.T.
11m
Numbuh 1, both literally and figuratively, risks his neck when he sides with an adult to rid children of snake-like ties.
Episode credits
Directed by Tom WarburtonWritten by Mo Willems, Tom WarburtonGuest stars Tom Kenny, Jason Marsden, Dave Wittenberg, Jill Talley
Episode 16
Operation: C.L.O.S.E.T.
11m
A boy gets lost in a closet and the KND are on the job in no time.
Episode credits
Written by Mo Willems, Tom Warburton
Episode 17
Operation S.N.O.W.I.N.G.
22m
Numbuh 1 is sick in bed with a cold on a snow day. Even worse, the villainous Fourth Grade President is determined to bring the children, who are all taking advantage of the snow day, to school for a special assembly.
Episode credits
Directed by Tom WarburtonWritten by Mo Willems, Tom Warburton
Episode 18
Operation M.A.U.R.I.C.E.
22m
An operate named Maurice is decommissioned from the Kids Next Door after he attains the age of 13. He has been working on a cure for chicken pox. The one who is saddened the most by his departure is Numbuh 5, so she suggests that they keep an eye on him so that the teenagers don't recruit him.
Episode credits
Written by Mo Willems, Tom Warburton, Gideon Kendall, Robert Kopecky
Episode 19
Operation L.O.V.E.
11m
Numbuh 3 stars as the lead female in a "West Side Story"-style romantic musical. But when Numbuh 4 interrupts the play, the war that follows between the Kids Next Door and the Delightful Children From Down the Lane is anything but staged.
Episode credits
Written by Mo Willems, Tom Warburton
Episode 20
Operation: C.O.U.C.H.
11m
Numbuhs 1, 2 and 5 all go off to China after Numbuh 4 falsely alerts them of trouble there. He then watches TV in their absence, but Numbuh 3 doesn't leave, either, and they fight over the remote control, which falls into the couch. Numbuh 4 goes into the couch after it... and winds up a strange world where everyone is named Dave, who want the control for themselves.
Episode credits
Written by Mo Willems, Tom Warburton, Alison Wilgus
Episode 21
Operation D.O.D.G.E.B.A.L.L.
11m
The powerful Dodgeball Wizard believes that adults are better at playing dodgeball than kids, so when he learns of "the one called Beetles," a kid who is a greater dodgeball player than he is, he becomes determined to destroy his rival. And that rival is, apparently, Numbuh 4!
Episode credits
Written by Mo Willems, Tom Warburton
Episode 22
Operation: F.E.R.A.L.
11mfinale
Numbuh 1 is sent to retrieve an important code from Rainbow Monkey Island, but after a run-in with the Delightful Children From Down the Lane, he is left stranded there. Soon, he ends up forgetting who he is and starts behaving like a wild Rainbow Monkey. His teammates become very worried when it appears that there may be no way to cure him.
Episode credits
Written by Mo Willems, Tom Warburton
Episode information updated Jul 24, 2026
More about Codename: Kids Next Door
Cast
Ben DiskinNumbuh 1 / Numbuh 2 (voice)
Lauren TomNumbuh 3 (voice)
Dee Bradley BakerNumbuh 4 (voice)
Cree SummerNumbuh 5 (voice)
Billy West
Richard Steven Horvitz
Brian Tochi
Greg CipesCredits
- Created by
- Tom Warburton
- Written by
- Tom Warburton, Mo Willems, Andy Rheingold, Alison Wilgus, Robert Leighton, Tom Eaton, Anne D. Bernstein, Brian Muehl, Billy Aronson, Kim Arndt, Blake Lemons, Guy Moore, Quack Leard, Gideon Kendall, Robert Kopecky, Grace Lu, Erin Finnegan
Production details
- Status
- Ended
- Series type
- Scripted
- Episodes
- 139
- Original language
- English
Networks & production
Cartoon NetworkUnited States
Curious PicturesUnited States
Cartoon Network StudiosUnited States
Themes
gadgetmissionsecret organizationspy hero
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