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Codename: Kids Next Door: Season 4

2004 · 22 episodes

What Season 4 of Codename: Kids Next Door

Five children from very different backgrounds live in a high-tech treehouse in California. They form Sector V of the Kids Next Door, a global espionage organization, and each takes on a code name, from Number 1 to Number 5. Their mission is to defend children's rights against adults and teenagers, and to them, oppression ranges from a trip to the dentist to being forced to eat vegetables. The agents face their enemies head-on with weapons built from household objects and with very different skills. The group takes its cause very seriously and does not accept any rules imposed by grown-ups.

22episodes
Nov 19, 2004Aired
Jul 22, 2005latest episode
4.8 hrtotal runtime

Season 4 Episodes

  1. 4x01

    4x01 Operation R.A.B.B.I.T.

    Nov 19, 2004 · 11 min

    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.

    Written by: Tom Warburton, Mo Willems, Tom Eaton

  2. 4x02

    4x02 Operation: FLUSH

    Nov 19, 2004 · 11 min

    The villains attempt to capture the KND Treehouse, but the Toilenator, trying to be helpful, only hinders their plans.

    Written by: Tom Warburton, Mo Willems

  3. 4x03

    4x03 Operation F.O.O.D.F.I.T.E.

    Nov 26, 2004 · 11 min

    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.

    Directing: Tom Warburton · Writing: Tom Warburton, Mo Willems · Starring: Grey DeLisle

  4. 4x04

    4x04 Operation: C.L.U.E.S.

    Nov 26, 2004 · 11 min

    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.

    Writing: Tom Warburton, Mo Willems · Starring: Candi Milo, Keone Young, Tara Strong

  5. 4x05

    4x05 Operation N.U.G.G.E.T.

    Dec 3, 2004 · 11 min

    Numbuh 4 discovers a chicken nugget that initiates a chicken nugget rush.

    Directing: Tom Warburton · Writing: Tom Warburton, Mo Willems · Starring: Keone Young

  6. 4x06

    4x06 Operation: M.A.C.A.R.R.O.N.I.

    Dec 3, 2004 · 11 min

    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.

    Written by: Tom Warburton, Mo Willems

  7. 4x07

    4x07 Operation P.O.O.L.

    Dec 10, 2004 · 22 min

    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.

    Directing: Tom Warburton · Writing: Tom Warburton, Mo Willems · Starring: Tom Kenny, Billy West, Jeff Bennett, Daran Norris

  8. 4x08

    4x08 Operation C.A.K.E.D.-F.O.U.R.

    Feb 21, 2005 · 22 min

    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?

    Directing: Tom Warburton · Writing: Tom Warburton, Mo Willems · Starring: Maurice LaMarche, Candi Milo, Jeff Bennett, Dave Wittenberg

  9. 4x09

    4x09 Operation S.I.T.T.E.R.

    Apr 29, 2005 · 11 min

    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.

    Directing: Tom Warburton · Writing: Tom Warburton, Mo Willems · Starring: Candi Milo, Jason Harris, Jennifer Hale

  10. 4x10

    4x10 Operation: S.A.T.U.R.N.

    Apr 29, 2005 · 11 min

    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!

    Writing: Tom Warburton, Mo Willems · Starring: Daran Norris

  11. 4x11

    4x11 Operation: C.H.O.C.O.L.A.T.E.

    May 6, 2005 · 11 min

    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.

    Directing: Tom Warburton · Writing: Tom Warburton, Mo Willems · Starring: Daran Norris

  12. 4x12

    4x12 Operation: M.A.T.A.D.O.R.

    May 6, 2005 · 11 min

    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.

    Written by: Alison Wilgus, Tom Warburton, Mo Willems

  13. 4x13

    4x13 Operation L.U.N.C.H.

    May 13, 2005 · 11 min

    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.

    Directing: Tom Warburton · Writing: Tom Warburton, Mo Willems · Starring: Frank Welker, James Arnold Taylor, Candi Milo, Grey DeLisle

  14. 4x14

    4x14 Operation: M.U.N.C.H.I.E.S.

    May 13, 2005 · 11 min

    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.

    Writing: Tom Warburton, Mo Willems · Starring: Maurice LaMarche, Tom Kenny, Jeff Bennett, Daran Norris

  15. 4x15

    4x15 Operation K.N.O.T.

    May 20, 2005 · 11 min

    Numbuh 1, both literally and figuratively, risks his neck when he sides with an adult to rid children of snake-like ties.

    Directing: Tom Warburton · Writing: Tom Warburton, Mo Willems · Starring: Tom Kenny, Jason Marsden, Dave Wittenberg, Jill Talley

  16. 4x16

    4x16 Operation: C.L.O.S.E.T.

    May 20, 2005 · 11 min

    A boy gets lost in a closet and the KND are on the job in no time.

    Written by: Tom Warburton, Mo Willems

  17. 4x17

    4x17 Operation S.N.O.W.I.N.G.

    May 27, 2005 · 22 min

    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.

    Directing: Tom Warburton · Writing: Tom Warburton, Mo Willems

  18. 4x18

    4x18 Operation M.A.U.R.I.C.E.

    Jul 8, 2005 · 22 min

    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.

    Written by: Tom Warburton, Mo Willems, Gideon Kendall

  19. 4x19

    4x19 Operation L.O.V.E.

    Jul 15, 2005 · 11 min

    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.

    Written by: Tom Warburton, Mo Willems

  20. 4x20

    4x20 Operation: C.O.U.C.H.

    Jul 15, 2005 · 11 min

    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.

    Written by: Alison Wilgus, Tom Warburton, Mo Willems

  21. 4x21

    4x21 Operation D.O.D.G.E.B.A.L.L.

    Jul 22, 2005 · 11 min

    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!

    Written by: Tom Warburton, Mo Willems

  22. 4x22

    4x22 Operation: F.E.R.A.L. Season Finale

    Jul 22, 2005 · 11 min

    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.

    Written by: Tom Warburton, Mo Willems

Season 4 Cast

All Seasons

Where to Watch Season 4 of Codename: Kids Next Door

It is currently not available on the major streaming platforms.

Frequently Asked Questions

How many episodes does season 4 of Codename: Kids Next Door have?

Season 4 of Codename: Kids Next Door has 22 episodes.

When did season 4 of Codename: Kids Next Door premiere?

Aired on November 19, 2004.

Where to watch season 4 of Codename: Kids Next Door

Currently not available on the major subscription platforms (availability may vary by country).