The BEST episodes of Codename: Kids Next Door season 3

Every episode of Codename: Kids Next Door season 3, ranked from best to worst by thousands of votes from fans of the show. The best episodes of Codename: Kids Next Door season 3!

The objective of Codename: Kids Next Door is simple--to lead young people everywhere in the fight against the injustices of a not-so-kid-friendly world! From the fortress of their treehouse headquarters, this covert team of 10-year-olds uses their patented 2x4 technology to put a stop to anyone who gets in the way of their mission. So hurry and join the KND revolution.

Last Updated: 9/26/2024Network: Cartoon NetworkStatus: Ended
Operation: A.R.C.H.I.V.E.
star
8.25
16 votes

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

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

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.

Watch Now:AmazonApple TV
Operation: U.T.O.P.I.A.
star
8.06
17 votes

#2 - Operation: U.T.O.P.I.A.

Season 3 - Episode 4 - Aired 6/25/2004

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.

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Operation: P.I.N.K.E.Y.E.
star
8.00
18 votes

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

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

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.

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Operation: L.O.C.K.D.O.W.N.
star
8.00
12 votes

#4 - Operation: L.O.C.K.D.O.W.N.

Season 3 - Episode 15 - Aired 8/6/2004

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!

Watch Now:Amazon
Operation: B.U.T.T.
star
7.94
18 votes

#5 - Operation: B.U.T.T.

Season 3 - Episode 7 - Aired 7/16/2004

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

Watch Now:AmazonApple TV
Operation: A.F.L.O.A.T.
star
7.94
16 votes

#6 - Operation: A.F.L.O.A.T.

Season 3 - Episode 2 - Aired 6/18/2004

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

Watch Now:AmazonApple TV
Operation: F.O.U.N.T.A.I.N.
star
7.93
15 votes

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

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

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.

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Operation: P.R.E.S.I.D.E.N.T.
star
7.93
67 votes

#8 - Operation: P.R.E.S.I.D.E.N.T.

Season 3 - Episode 20 - Aired 11/5/2004

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

Directors: Tom Warburton
Writer: Mo Willems
Watch Now:Amazon
Operation: F.U.T.U.R.E.
star
7.78
18 votes

#9 - Operation: F.U.T.U.R.E.

Season 3 - Episode 1 - Aired 6/11/2004

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.

Watch Now:AmazonApple TV
Operation: L.E.A.D.E.R.
star
7.71
14 votes

#10 - Operation: L.E.A.D.E.R.

Season 3 - Episode 3 - Aired 6/18/2004

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

Watch Now:AmazonApple TV
Operation: R.O.B.B.E.R.S.
star
7.69
16 votes

#11 - Operation: R.O.B.B.E.R.S.

Season 3 - Episode 5 - Aired 6/25/2004

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

Watch Now:AmazonApple TV
Operation: H.O.S.P.I.T.A.L.
star
7.64
11 votes

#12 - Operation: H.O.S.P.I.T.A.L.

Season 3 - Episode 21 - Aired 11/5/2004

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.

Watch Now:Amazon
Operation: S.P.R.O.U.T.
star
7.54
41 votes

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

Season 3 - Episode 22 - Aired 11/12/2004

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.

Directors: Tom Warburton
Writer: Mo Willems
Watch Now:Amazon
Operation: G.R.A.D.U.A.T.E.S.
star
7.26
42 votes

#14 - Operation: G.R.A.D.U.A.T.E.S.

Season 3 - Episode 13 - Aired 8/6/2004

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.

Watch Now:AmazonApple TV
Operation: S.L.U.M.B.E.R.
star
7.20
15 votes

#15 - Operation: S.L.U.M.B.E.R.

Season 3 - Episode 10 - Aired 7/23/2004

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.

Watch Now:Apple TV
Operation: H.U.G.S.
star
7.15
40 votes

#16 - Operation: H.U.G.S.

Season 3 - Episode 16 - Aired 8/13/2004

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.

Operation: C.A.K.E.D.-T.H.R.E.E.
star
7.13
40 votes

#17 - Operation: C.A.K.E.D.-T.H.R.E.E.

Season 3 - Episode 14 - Aired 8/6/2004

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.

Operation: T.R.I.C.K.Y.
star
7.04
67 votes

#18 - Operation: T.R.I.C.K.Y.

Season 3 - Episode 18 - Aired 10/29/2004

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

Operation: T.R.A.I.N.I.N.G.
star
7.00
16 votes

#19 - Operation: T.R.A.I.N.I.N.G.

Season 3 - Episode 8 - Aired 7/16/2004

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

Watch Now:Apple TV
Operation: J.E.W.E.L.S.
star
7.00
12 votes

#20 - Operation: J.E.W.E.L.S.

Season 3 - Episode 17 - Aired 8/13/2004

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.

Operation: H.O.U.N.D.
star
6.93
14 votes

#21 - Operation: H.O.U.N.D.

Season 3 - Episode 23 - Aired 11/12/2004

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

Operation: U.N.C.O.O.L.
star
6.91
11 votes

#22 - Operation: U.N.C.O.O.L.

Season 3 - Episode 19 - Aired 10/29/2004

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

Operation: K.A.S.T.L.E.
star
6.69
13 votes

#23 - Operation: K.A.S.T.L.E.

Season 3 - Episode 12 - Aired 7/30/2004

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.

Watch Now:Apple TV