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Kids Next Door Mission

Operation:

W.M.G.P.A.G.E

Wildly
Mass
Guessing
Potential
Answers to
Get
Enlightened
As a WMG page spoilers are off. You Have Been Warned!

Operation: A.R.C.H.I.V.E. is partially true in that there WAS a "Mr. Wigglestein"...
And he's a distant ancestor of Grandfather, thus making him a member of Numbuh 1/Nigel's own lineage. Wigglestein was the first to manifest the darkness and flames his descendants would have, though out of a desire for vengeance and retribution after the abuse the first children did to their creations. However, he and/or his descendants either lost sight of their mission or eventually let the ordeal warp them into becoming just as monstrous hence the Villainous Lineage of Grandfather, Father/Benedict and so forth. However, they aren't the only ones carrying a dangerous gajillion years-long grudge...

The Galactic Kids Next Door are descendants of the first kids on Earth.
In reality not all the children would've just settled on the moon and may very well have gone further into the cosmos, eventually arriving on other planets. But their feelings over everything (refusing to acknowledge their actions) would fester into greater hatred over generations. Eventually they'd begin the Galactic KND with the intent of exterminating all adults in retaliation for daring to stand up to them. And recruiting Numbuh 1 is part of their campaign by using a descendant of the first person to truly defy their ancestors for the perfect payback.

They just tend to focus too much on one thing at the expense of everything else. It's telling to note that Wally has moments of genuine insight and is capable of being a doctor in the future despite his poor grades. And Toiletnator (Numbuh 4's Evil Uncle unknown to him) is capable of being a fighter and villain despite usually coming across as an utter joke if he puts his mind to it. Though that's the specific detail for both if not all members of their family: If they put their mind to it. Their stupidity isn't an inherent issue but both of them are just extremely single-minded, almost arguably to the point it's not entirely impossible they've basically given up skills in anything and everything except their areas of expertise.
  • Confirmed.

Numbuh 19th Century found someone to help him.
It's just a theory but I'm pretty sure that in the 1800s someone would be bound to notice a child's disappearance. And a mystery like that is never forgotten. Also, keep in mind that the KND have grown-up allies so it wouldn't surprise me if he was eventually discovered and recognized by one of them and that adult helped him out.

Numbuh 2/Hoagie's dad might still be alive.
In Operation: C.A.K.E.D-F.O.U.R., his mother refers to his dad in the present tense which implies he’s still around. One troper's theory is that he’s in the military (probably the Air Force) and the reason he's never seen is that he's often at work — it would be a good theory as to where Numbuh 2 gets his love of flying and stuff from.

In Operation: R.E.C.R.U.I.T., Numbuh 1 tells Bobby about the secret of the Dish Washers and how unfinished scraps of food on children's plates are used to replicate DNA. Notice how the clone Bobby has blue eyes. They look like the Delightful Children's. It's also the real reason they're so polite.

Father is part of the Black Dragonflight.
Think about it! He's a dragon in the guise of a wealthy man who has extreme disdain for anything he views as inferior or annoying (children). He also has no qualms about capturing and using children in experiments much like Nefarian kidnapped the whelps of other flights to create the Chromatic Dragonflight.

The whole "war against adult tyranny" thing is one of rebellion against an unjust society.
The adults (and technically the teenagers) seem to have sturdier, more advanced technology. They've restricted access to basic sources of information ("PG-13 and up") and have required licenses for cars, passports for travel, money for trade, ID cards for all of the above and parental permission for many things not falling into that category.

What little access kids have to these kinds of technology is either built from adult trash or borrowed from adults and vastly inferior. Bikes can't compete with cars, pocket change won't buy you much and the closest they'd have to an ID are library cards which are only good to ID them and invalid as licenses or passports.

Even if they could (and they probably can) fake the money, ID, licenses, etc. their very appearances make it easy to pick out kids trying to get access to adult-exclusive technology and privileges.

Sound familiar?

  • Pretty much confirmed.

The WMG about "Earth is currently infected with the adulthood disease"? It's deeper than that.
On Earth the KND mostly fights adults and teenagers. The GKND's enemies, however are never shown. Perhaps an alien race that abhors children?

And you would think the KND would mention the "disease" more than once unless it was vital to keep it secret. Why?

Here's the theory. In space there is a horrifying Hive Mind race that has four stomachs and hates kids. They produce a viral agent that causes aging. One that can be replicated. And concentrated to accelerate the process. The aliens can't achieve the technology for the process themselves as they have no hands (yet they have flying saucers, but then again this is the KND universe so practically anything goes). So they do it slowly, then let the adults do it faster when their increased brain power allows them the technology to do so.

So what's the substance? Who are the aliens?

First, take note that kids hate vegetables, liver, and pretty much anything else that tastes funny. The viral agent has to be ingested to take effect. What is least like sugary foods yet tastes like them with the right additives that kids eat regularly? What substance of that description is also recommended by doctors and dentists, and which parents make their kids consume sweet additives or not? What could it be?

Any run through the KND's L.U.N.C.H.B.O.K.S. would probably bring up the following result...

MutagenInitiatesLittleKids

Now the pieces start to fall right into place. Chocolate milk. Milk chocolate. Bowls of sugary cereal. Ice cream. Even grilled cheese or buttered popcorn.

And the aliens? You have just discovered the nature of the sinister Bovoids, ruled over by the diabolical Queen Cow. The "abductions" in farmers' fields are just a cover. Soon the Bovoids will attempt to invade Earth, and only the KND will stand between them and conquest!

  • ...I freakin' love you, man.
  • Dude... If KND went on for at least one more season or had a spinoff series to showcase Numbuh 1's adventures with the GKND, they should've hired YOU as a writer, because you are freaking BRILLIANT!
  • *Stands and applauds you*

The whole "war against adult tyranny" thing is just a massive game of make-believe millions of people are in.
The battle sequences, fights in outer space and life-or-death situations that we the audience see are just artistic renderings of what the kids are imagining, a technique often employed in shows that make heavy use of fantasy such as Rugrats and Muppet Babies. This would explain why 2x4 Technology can do things real technology can't, such as erase memories or fly to Saturn in less than a few hours. Why haven't Abby and Cree killed each other? Because the guns, the armor, and the prisons aren't real. Teenagers aren't really decommissioned; their friends just acknowledge that they've reached an age where such make-believe games are seen as immature, and they come up with an interesting explanation for why they have to give them up... except for the "undercover operatives," who don't care what their peers or parents think and want to continue playing. The parents of kids and teens who are sent to "prisons" in the Arctic and on the moon don't wonder where they are because nobody's really in prison; they're just pretending. The same goes for how kids like Numbuh 362/Rachel appear to live on the moon and how cadets appear to stay in Antarctica for training. After all, the kids seem to know there's a limit on what is possible even for them and where to draw the line, as seen in the King Sandy episodes.
Number 4: Kuki, you're not gonna marry that dork, are ya'?
Number 3: Of course not! We're just pretending.
Sandy: Pretending? The king never pretends.
Number 3: What are you, nuts? I can't get married for real! I'm, like 10 years old!
  • That seems like a very plausible theory. It puts everything in a new light.
  • I also have a feeling most of the adult enemies are just actors that the adults hire to give kids a thing to do. After all...IF, and this is a BIG if, where does KND get all its funding? The kids are all below the age of 13, they can't get jobs. It's the parents who are making the game 'real'. And all the parents and teachers are in on it since the 'game' keeps the kids away from what is the real threat-drugs, alcohol and cigarettes.
  • It certainly would explain Operation: Moon...
  • Perhaps this explains why all the villains think they're villains — it's what most children expect!
  • That and Alternate Character Interpretation just made Father go from Affably Evil to the coolest dad ever for hanging out and having fun with a bunch of the neighborhood kids. Although the fictional status of the story has always been ambiguous, Operation: ARCHIVE makes things lean on the "it's real" end.
    • The crossover with Grim Adventures and the cameo of Ed, Edd, and Eddy also hints that it's real.
      • Not necessarily. Cartoon Network could very well exist in the KND universe (much like how Futurama exists as a cartoon in The Simpsons universe, despite having the same Real Life creator). They could've pretended to be the characters in the show.
  • This may run even deeper. Perhaps the finale could be the adult version of the kids turning their childhood experience into a cartoon.
  • With this in mind, the explanation of the GKND transmission: Nigel had to move far away (probably back to England), so his friends came up with this cool explanation for why he was leaving. They kept in touch via the Internet, though, and the game shifted online — now they communicate via video transmissions about their "missions" and such.

Each villain is a physical incarnation of things many kids don't like.
This is going by the above theory that it's one big game of make-believe.
  • Father represents what kids hate most about adults: their authoritarian nature and disciplinary actions. The Delightful Children represent kids' fear of becoming more-or-less completely rule-abiding. Father only wants the best for his kids in the long run.
    • Maybe instead Father represents the fear that they'll never have the perfect dad. His appearance, after all is that of a Standard '50s Father.
  • Teenagers are part Growing Up Sucks (kids imagine that they're against the KND when teens have just grown out of it) and part inability to understand non-kid activities that teens do. In truth the teens just don't want to play along.
  • Mr. Boss represents parents always being busy with work so they imagine he's a Corrupt Corporate Executive. He's more or less your average businessman.
  • Stickybeard represents the fact adults are always trying to stop kids from having too much candy so he's seen as a candy pirate. In reality Stickybeard may be a health nut.
    • Maybe he also partially represent how adults have disposable income can just buy candies in bulk (like buy a whole box instead of just one bar) and always bought the one very last bar on shelf.
  • Heinrich Von Marzipan is the Jerkass kid that steals people's candy for himself. Still, he's kind enough to play along with the KND game.
    • ...you mean 'she', Maybe in this colossal, elaborate make-believe game it's a girl pretending to be Heinrich.
  • Grandma Stuffum represents that old lady who made horrible food, yet was so nice and important you had to eat it to be polite.
  • Chester is the dodgy fast-food restaurateur, who had been arrested by the health department after a bunch of people got sick.
  • Knightbrace very obviously represents the kids' fear of dentists. In reality, he's a perfectly normal dentist.
  • Nurse Clayborne is a surgical nurse, who deals with really squicky diseases, etc.
  • Count Spankulot is likely a manifestation of the one corporal punishment that kids fear.
  • Few characters aren't made up. They are:
    • That one mad scientist who's always looking for a perfect snow cone. The world is baffled that he exists.
    • The Toiletnator. He's a crazy homeless person who thinks the KND is a real organization. This is why no one wants to put up with him.
    • Grandfather. In Real Life he's as bad as he was in the show. Perhaps even worse. Picture an actual atrocity. Grandfather was in charge of one. He may not even be alive today but was so horrible to Father he remains embedded in his memory. Guess what he did, I dare you.
      • Really? Most likely he represents certain images that children who hate adults have of their grandfathers that aren't very...nice. That or perhaps a reflection of the old way of child-rearing in the 19th and early 20th century, as well as the forced labor of children in factories in earlier times, and still in some cultures today.
  • Alternatively they're the LITERAL personifications of the many things kids don't like. Maybe a personification is passed down from one generation to another.

All the normally-impossible stuff happens because it's manifested into reality through the imagination of those involved, an alternate set of physics, or a combination of both.
Not being "real" in the same way as other things prevent parents from wondering where their kids are or how that huge hole appeared in the wall. It protects people from being seriously injured or killed in explosions, house crushings (Op. P.I.R.A.T.E., anyone?), and the like.

This also explains how operatives, who should all be real people, can meet with other operatives halfway around the world in a society that doesn't appear to use the internet or long-distance phone calls. After all, it's impossible to have a worldwide game of make-believe that easily.

Codename Kids Next Door is a criticism against adultism.
Duh, it's about kids rebelling against adults.

Father's birth name is "Benedict Wigglestein".
In Operation: ZERO his first name is revealed to be Benedict. "Operation: ARCHIVE", although Word of God confirms it to be non-canon introduces "Mr. Wigglestein" who is the first adult to rebel against children (a la The Animatrix); he bears an uncanny resemblance to Father. Put them together and you get one hell of a name. His brother Numbuh 0/Monty took his wife's surname because he wanted to distance himself from his father.
  • Supported by "Operation: INTERVIEWS". Father has a director's chair with the initials "B.W."
  • Isn't Benedict Wigglestein-Uno being Father confirmed Canon already?
  • Numbuh 0 probably never changed his surname because he never had a reason to. With his memories wiped he didn't have the association of his dad being evil. Father still had his memories and wanted to separate himself from his family.
  • Perhaps Father is in fact the one who took his (ex-)wife's surname. (For guys like him it's not unlikely or uncommon to have an ex-wife or two.) And his wealth today is from her side of family. That's why Grandfather still looks down at him, for not being "man enough to earn his own fortune by his own hand." And the original Uno estate land on Numbuh 0’s hand. At least part of it since Father certainly would buy/crash his father's empire when he has the chance. That's why he's always laid-back and doesn't seem to work in an office (like Numbuh 4's dad) because he lives with the profit from all those estates he owns.

Numbuh 1 is the ancestor of Captain Jean-Luc Picard.
  • Oh come on, it's so obvious they're related.
  • Not only that but the GKND is what eventually becomes the United Federation of Planets.

KND exists in the same world as Children of the Corn.
That's right. You read it, you can't unread it. Maybe they were inspired by the KND or are another extremist splinter group. Maybe they're what the KND dwindles to in the future. Or maybe they're the earliest version - they wrote the Book of KND. (Insert any number of theories here - MAYBE ALL OF THEM ARE TIME LORDS LOL!)

Any way you slice it, it's too perfect NOT to work.

Numbuh 362/Rachel was purposefully misleading Numbuh 1 in "Op: GIRLFRIEND".
362 wasn't out of character in suspecting Numbuh 63.5 was part of the "Splinter Cell" and harassing Numbuh 1 to pursue him. She'd heard rumors that the Splinter Cell division (actually the GKND) were endangering him and Numbuh Vine/Lizzie in an attempt to break them apart. Unsure who to trust and who could be watching Numbuh 362 attempted to drag Numbuh 1 away without revealing her true motives. She assumed the Splinter Cell couldn't target both kids. If they couldn't then Lizzie, seemingly an innocent bystander wouldn't get hurt.

Sector V is located in Virginia.
Most sectors are named after the location that they are in. They visited the beach on many occasions. They live in a place with a diverse population. And it didn't take Numbuh 1 long to walk from the White House to the Sector V treehouse.

Mr. Boss was fired before becoming a full-time villain.
In his first appearance he tried to send his employees' daughters (and Numbuh 4) to Pluto. While crossing the Moral Event Horizon is perfectly normal for the likes of a Corrupt Corporate Executive doing something such as that violates about eleventy billion laws including union rights and FAA permits. And if The Government didn't crack down on him then the board of directors would've probably fired him for trying to get rid of their spoiled daughters. And even if that didn't happen attracting the wrath of the KND, a multinational militant organization complete with space cannons and the G-rated version of nuclear weaponry is generally bad for business.

Also, we don't see Mr. Boss in his company after his introduction episode. Coincidence?

  • This is going along with the above that the entire thing is an elaborate game of make-believe but three of Sector V's Agent's Parents work for Mr. Boss, justifying them seeing him again. Though this is kinda flimsy since Numbuh 86 goes to the same school as Sector V...

The Boyfriend Helmet isn't a toy.
Number 5 never explicitly says it's a toy nor what type of magazine she has that it's advertised in. And if kids read magazines they're not supposed to in our world they certainly can in this one.

It's not marketed to little girls at all. It's the latest advanced gadget for the adult BDSM crowd. We know from Operation GIRLFRIEND that Lizzie has a sister old enough to get married; she could've had her sister buy it for her... or stolen one her sister had already bought! Squick!

This is in no way serious as it would ruin the Rule of Funny.

A theory with basis that nonetheless originated after the premiere of C.A.K.E.D.F.O.U.R. which revealed a) Number 2's dad is apparently dead and b) Father hated him.

It's a process that deprives people of individuality by practically turning them into soulless zombies obedient to all authority. And it's designed chiefly for use on kids. The Phlebotinum Overload referred to in Operation: Z.E.R.O. that destroyed the machine used for it also gave Father the key to perfecting the process without killing subjects.
  • Corollary: He’s incredibly skilled with the process since he can do it without ending victims and seeing their souls before they get intercepted.

Numbuh 274/Chad is an egomaniacal Well-Intentioned Extremist who either lied about being a Fake Defector or has deluded himself into believing he is one.
Number 274: I've been running this show for five years. Five years! I can't let all I've worked for, all I've accomplished be ruined by a bunch of snot-nosed brats!

Chad was Soopreme Leader for less than three years (as seen by the flashback in MAURICE when Numbuh 100 was Soopreme Leader) but his reputation as best operative (at the time) went to his head and made him believe the KND owed him for all their successes before he took command. Even upon turning 13 years old he convinced himself he was still the only one to successfully lead the KND, being willing to destroy the Moonbase to protect his secrets. His goal, even when he jumped off the deep end still seemed to be remaining at the top rather than revenge ("None of you are gonna tell anyone about my birthday!"). His explanation about doing it to stop Numbuh 5/Abigail's sister Numbuh 11/Cree doesn't fly: destroying the villain's target before they can doesn't count as stopping them!

Unfortunately, somewhere down the road Chad discovered the true identity of the "Splinter Cell" as a cover for the Galactic Kids Next Door and their true goal. He wasn't trying to warn Numbuh Infinity about a betrayal at the peace signing in "Operation: TREATY"; he was demanding to know why they chose Numbuh 1 instead of him (in his own swelled head he's still the greatest Earth KND operative). To save face Numbuh Infinity lied when he said Chad was still "one of [them]."

  • He seemed completely sincere so I think jossed.
  • Corollary: To prove himself to the GKND, Chad chases Nigel into space and becomes a Well-Intentioned Extremist. Numbuh Infinity attempts to stop Chad by going into space as well and eventually ends up becoming his Morality Pet.

Numbuh 2 was also a candidate for the Galactic Kids Next Door.
In INTERVIEWS, Number 2 explains his knowledge of the GKND and their choosing Numbuh 1 as their operative from Earth this way:
"Science nerds stink at keeping secrets from each other."

The scientists in A.M.I.S.H. weren't being kidnapped but neither were they secretly meeting to watch a media marathon. Numbuh 2 learned of their connection to the "Splinter Cell" after the end of that episode.

The mission in P.L.A.N.E.T. which Number 74.239 (part of the GKND) was in charge of happened to be another test like the kind they were seen frequently giving to Numbuh 1 (and presumably other operatives). Numbuh 2 knows this which is why he accidentally lets slip "I just need a quick word with the test subject... uh... astronaut before the launch."

The Kids Next Door was founded by Peter Pan.
They're unclear on any history, including their own so their archives can't be trusted. But they resemble the original Lost Boys in many things. They live in trees, both on top as Peter did by the end, and inside as the Lost Boys originally did. They battle adults and anyone else who tries to tell them what to do. Anyone who breaks the cardinal rule of "no growing up" is violently ejected from the organization. And to top it off, they can make people forget their past.
  • Ergo, Neverland is on another planet, the "Galactic Kids Next Door" are the Lost Boys, and they sent the original Book of KND that Number Zero used to start the Kids Next Door on Earth.
  • The reason the KND never flew is that Earth has no fairies; perhaps they all died out before the KND came. KND was established on Earth because an ancestor of Grandfather (probably related to Captain Hook) had been defeated by Peter and escaped to Earth, causing an operative to be sent to pursue him. This operative was one of Peter's most trusted boys and carried the Book of KND so he could start a permanent outpost on Earth to help Neverland guard against other adult villains. However, he was found and either killed or brainwashed through Grandfather's ancestor's machinations, leaving only the book behind in the hands of an Earthling child. ("Killed" is more likely.) The story was later passed to an adult, who promptly took the story and wrote a book about it, changing some details and inserting some philosophic themes. The name of the original operative was never known. We only know about him from the nickname that the adult gave him in his book: The Little Prince. However, thanks to his sacrifice, the KND on Earth was established to combat Earthly adult tyranny.
    • Alternatively, the KND universe is Neverland in the future. It would certainly explain a lot, such as the blatant movie parodies and references, the Great White Asparagus, why aging is treated like a disease, why candy is more sought after than gold and jewelry, and some of the things the rest of you have already mentioned. One way or another, the magic of Neverland made changes (girls having larger roles than storytelling and cleanup duties, the movie references, more racial diversity, etc.) to keep up with the times.

The KND take place in the same dimension as Ed, Edd n Eddy.
Double-D (who was been shown to build technology as sophisticated as aircraft and weather satellites out of cardboard and whatever other junk he finds lying around the alley) is either related to Numbuh 2 or is a former member whose mind was never erased when he turned thirteen.
  • Double D is in the sixth grade which will make him 11 or 12. It is entirely possible that he still is in the KND (just one of the older members).
    • It's likely that each of the Eds were in fact members, as they each have their own special talents that would've been at least useful in the KND (Ed's strength and knowledge of horror fiction, Edd's smarts and aptitude for building, Eddy's charisma and street-smarts). They could be either current KND members, decommissioned after very recently turning 13, or (knowing their luck) dishonorably discharged for too many screw-ups.
  • Supported by the crossover episode "The Grim Adventures of the Kids Next Door". Billy calls the Eds in the opening sequence, but is told by Eddy to "Call the Kids Next Door. They're cheap."
    • Apparently, these all also take place in the same world as The Powerpuff Girls.
      • Further supported by FusionFall. The original series does appear to take place in the same universe but they aren't as apt to do crossovers.
      • In a way it's one of the few things ported over from Cartoon Network's history, they were born out of a company that was practically king of crossovers devoting several series to be nothing but crossovers!

And because she has trouble finding her Mr. Right she acts like she hates all males as her way of letting off the steam of it. Or...

Numbuh 86 is a lesbian.
Though that might not explain why she garnered a soft spot for Numbuh 19th Century.
  • Or why she said that Numbuh 4 was cute in operation END...
    • Another explanation could be that ...
      • A lot of children, and adults actually, have crushes that either aren't sexual or don't reflect their sexuality. She could be Bisexual or a lesbian..Or just a kiddy little girl who dislikes boys.
  • She DOES have a rather extreme desire to prove herself to Numbuh 362...
As an addendum, Numbuh 86 grows up to be Fransizka von Karma.
  • Does her repetition of "stupid" remind you of a certain Prosecutor? Her Does Not Like Men nature is responsible for her Les Yay with Adrian Andrews.
  • Oh my God that is the best observation ever brb loving both these characters more now
  • Does this mean Miles Edgeworth may have also been a KND operative? Are all prosecutors previously KND operatives? This would make for an interesting fanfic.

Initially there were a few unpleasant adults out there (Count Spankulot leaps to mind as a possible "Patient Zero") the KND fought against. But then they started the practice of mind-wiping members who reached adolescence.

Growing up they were left with only bits and pieces of those five years or so and slowly became bitter at the thought of having boring early lives with the only fun parts being something they can't recall. Upon reaching adulthood they decided to take their frustrations out on other children.

Therefore the decommissioning process perpetuates the evils of adults and as the KND continues recruiting it just keeps setting up more future teenage and adult villains.

At least many adults who aren't supervillains were KND operatives.
Since there’s grownups that aren't monsters it's possible fragments of their memories still hold being agents hence them not being evil.

Numbuh 5 grows up to be Foxxy Love or she and Cree are two of Foxxy's illegitimate children handed off to a pair of loving parents.
Same hat, same way of speaking, same tough attitude.
  • Same actress.
  • Yikes.
  • This would explain why Numbuh 5 is the only one in Sector V to know where babies come from...
  • Thank God I'm not the only one who couldn't help but see that...

The first names of the Delightful Children start with the letters C, F, D, T & L.
UNDERCOVER reveals the boy with the football helmet on the far right of the formation to be named "Lenny" and ZERO reveals the tall shaggy-haired boy in the middle of the formation to be "David." Note that the acronym DCFDTL also has an "L" at the far right of the acronym and a "D" in the middle. This might mean that the first initials of the Delightful Children from left-to-right correspond with the letters in their acronym from left-to-right.

If we eliminate the "D" at the beginning of DCFDTL for the sake of not using the same initial twice, then from left to right the first initials of the Delightful Children are:

  • Blond lanky girl - "C"
  • Short blond boy - "F"
  • Tall shaggy-haired boy - "D" (Who we already know to be named David)
  • Stocky pigtailed girl - "T"
  • Football-helmet boy - "L" (Who we already know to be named Lenny)
    • So their names are possibly Catherine, Francis, David, Tia, Lenny etc?
    • If so, this troper is personally partial to the unnamed DC being named "Clarice", "Franklin" and "Thelma."
  • Word of God confirms their names to be Bruce (blond boy), David (tall boy), Ashley (bow girl), Ogie (short+ stout girl), and Lenny (helmet kid)
    • "Ashley" and "Ogie" are fan names.
    • The comic book tie-In confirms that the blond boy's name is "Bruce".
    • The Rainbow Monkey website revealed that "Ogie's" real name is Constance.
    • Old concept art says that "Ashley" is really Alessandra.

The Delightful Children represent absolute conformity.
They have a Hive Mind, speak together and wear incredibly normal clothing. However, since absolute conformity is (technically) impossible they collect weird things like toenails and occasionally don’t do what adults tell them. This is what makes them insane because they've been brainwashed into conformity and yet it's impossible for them not to have quirks. Note that they don't even seem to have minds of their own.
  • It explains why Numbuh 1 hates them because he's pretty much a younger version of Captain Picard who has a hatred for the Borg.

The Delightful Children deliberately sold out.
Even in the course of their career as KND operatives they may have been more eager to grow up or cooperate with adults then they were willing to admit to anyone else. They may have been either tempted too much by Father's powers, or too eager to sample whatever power the adults had and willingly went along with Delightfulization to gain the advantage. Of course once on the adults' side, the now Delightful Children realized they'd burned their bridges and that no other child, let alone a former KND member would ever want to associate with them again. They may consider being on the adult side worth it, as they tend to stick together despite lapses, with their "hive mind" their best way to cope with their self-imposed isolation/desertion. Their brief relapse to Sector Z in Operation: INTERVIEWS may have been a last fling with their former roles but secretly they knew they'd betrayed themselves and their old friends; that ultimately they would never really be trusted again hence the temporary nature of their reversion. And of course some kids are just brats and like being brats; the Delightfuls found a rather interesting way of being nasty.
  • Jossed. The Delightfuls are KND operatives who were unwilling victims of Father's delightfulization experiments.

The Delightfuls are Father's real children.
  • Sector Z were the five children of Father and an unseen woman (maybe more since Lenny is African-American) and when Father found out about their KND antics he used Delightfulization as a punishment to them for going against his will.
    • They could be adopted foster children, placed by various families as mentioned above, esp if Father said he could "help" them. Of course, Father may be just evil enough to go around "making babies" on his own (sort of), which makes his plans more long-range than anyone thought.
    • What, if anything, happened to the unseen "Mother", no doubt with mop and apron poised?
      • He may have been deemed the more sane parent in the divorce. (Which is saying a lot, knowing Father.) Or maybe she was accidentally hurt by the KND, leading Father to use Delightfulization as a punishment?
    • Jossed. The delightful are KND operatives who were victims of Father's delightfulization experiment.
    • The theory is not necessarily mutually exclusive with that explanation.
    • It shows that the parents of KND operatives are largely unaware of what their children get up to until confronted with the truth; even parents who are villains like Mr. Boss (up until the botched haircut rescue mission). Perhaps Sector Z performed their missions right under Father's nose up until they got caught. At which point, with his hatred of the KND combined with a sense of betrayal from his children Father decided to take... drastic measures.
      • Further evidence is that, even in the Mirror Universe in Operation P.O.O.L. their counterparts the Little Traitor Dudes For Children's Defense refer to Father's counterpart as "Daddy" and seem to live with him. While this world is intentionally strange and opposite to the normal one it would still be odd for a group of children to bunker down in an RV with a strange adult man and call him "Daddy" unless he were their actual parent. Which could imply that in the base universe Father is the Delightfuls' actual father.
  • Seems unlikely.

Father is a Firebender.
I'm very disappointed in all of you for not coming up with this yet. Anyway, he might even be a distant relative of the Fire Nation's Royal Family.

Father is Mrs. Thompson's ex-husband.
At the end of “Operation: D.O.G.H.O.U.S.E.”, Mrs. Thompson tells her class they "should never accept a necklace from their angry ex-husband," obviously implying the necklace that cursed her into the form of the Queen Weredog was a "gift" from her ex. We know Father's definitely got anger control issues so "angry" points in his direction. We also know he hates kids and would therefore love to use his ex-wife's profession as a teacher to plant a homework-eating werewolf in the middle of an elementary school. Finally, if he turned the KND into a zoo in "Operation: G.R.A.D.U.A.T.E.S." it's not outside his abilities to create a necklace that spreads werewolfism.

Earth IS currently infected with the adulthood disease but it's actually in a stable condition.
Numbuh 74.239 states in Operation: I.N.T.E.R.V.I.E.W.S. that adulthood is a disease sweeping the galaxy, if not the universe. If that's the case though why do we (humans, animals, plants, etc.) all eventually grow older? Are they infected with adulthood?

About eleventy buhmillion years ago Earth was a world without adults where kids were free to be kids forever. That changed when a Meteor of Doom made of pure, highly concentrated adulthood struck the planet spreading the disease across its surface. Adulthood itself wasn't evil, but many of those kids who became adults abused their power, turned themselves and others into senior citizombies, and would have left the world an agified wasteland, like the countless other planets that were infected and quarantined in the past.

However, Humans Are Special. A Ragtag Bunch of Misfits not all that different from the KND sectors today discovered a crashed 2x4 tech starship tangled in the branches of a massive but young tree. It was a ship from the Galactic Kids Next Door, and its pilots had been attempting to destroy the meteor of concentrated adulthood before another planet was contaminated. The dying GKND operatives with their last breath urged the earth kids to take the escape pod from the ship into deep space, where the rest of the GKND can locate and rescue them. The kids refused at the last minute, scrapped together some 2x4 tech, and destroyed the minor Eldritch Abomination at the core of the asteroid and the source of all adulthood.

Earth's atmosphere was still infected though and from then on every breath of earth's now-polluted atmosphere a kid took would gradually make them older. So the Ragtag Bunch of Misfits decided to use what limited time they had left as kids to defeat the other evils unleashed by the asteroid. They became the first Earth KND operatives heralded the first of many ages of the Kids Next Door.

  • This would explain why the real KND headquarters is kept on the Moon. It's the only place away from the contaminated Earth air.

Numbuh 3 grew up and founded the Fireside Girls.
Maybe when she grew up she never had her memories erased. She remembered everything and began the Fireside Girls to teach little girls about it.

Plus, it makes sense.

  • No, Fireside Girl Jamboree confirms that the Fireside Girls were founded by Eliza M. Feyerside. Unless Numbuh 3 grew up, changed her name to eliminate any proof of her relation to the KND and founded them since the KND disbanded years ago. They were trained without realizing it to fight adult tyranny which would also explain why time travel and giant robots, among other things are in their handbooks.
    • It's not impossible that Numbah 3 passed her knowledge on in secret to a trusted outside friend, Eliza to throw enemies off the trail.

The Ice Cream Men are drug traffickers.
The ice cream trucks are just a front. They don't serve kids because Even Evil Has Standards. However, they know about the KND and have no problem with attacking operatives who deliberately disrupt their business. While trafficking is their specialty they sometimes do mercenary work for supervillains if the pay is good. Operation: I-SCREAM was a plan by the Delightful Children to either destroy the Kids Next Door or push the Ice Cream Men toward being mooks.
  • Uhhh, Jossed? It's been stated multiple times they only sell to adults. Plus, considering that canonically there appear to be no firearms in the KND universe there probably aren't any drugs from real life either. Besides, they already have G-Rated Drug(s).

The DCFDTL were Killed Off for Real in Operation: INTERVIEWS.
The ex-Sector V members mention that the events in INTERVIEWS were the last time they encountered the DCFDTL. Also, what else other than vengeance for his dead children could make Father pursue Numbuh 1 for what has apparently been decades?

Numbuh 3/Kuki's mom was like her as a child.
Her name is Genki which could be a Meaningful Name. Numbuh 3 turned out to be just like her and look at how she was as a child.

In Operation CLUES she had this weird psychotic mini-episode where she freaked out over her daughters not letting her play with the Rainbow Monkeys she never had as a kid. When she did her voice got all high and girly like Kuki's so it seems that while similar she was deprived of frilly things in her childhood and that's why she grew so sour. Maybe Numbuh 3’s life as a teenager was full of similar disappointments?

  • Very plausible and pretty much confirmed.

Stickybeard is some kind of shapeshifting extradimensional entity.
His ship moves between dimensions so the extensive property damage when it sails is just an illusion. His pirates and munitions materialize upon leaving the ship so they cause real damage. He hoards candy because it was the first thing he liked about our universe. He took the form of a pirate due to some bizarre Theme Park Version of humans.

The Kids Next Door used to use real weapons.
But then some kid shot Marvin in the face and his parents got mad and sued the KND for eleventy billion dollars. This forced the KND to make a few cutbacks, ultimately resulting in 2x4 technology.

The Five Main Characters have doubles in Firefly.
Numbuh 1 is Mal.

Numbuh 2 is Wash.

Numbuh 3 is Kaylee.

Numbuh 4 is Jayne.

Numbuh 5 is Zoe.

  • I think that's more to do with the Five-Man Band dynamic than anything.

Leona's real secret... is that she has an ability to drink any kind of water to receive youth.
She really didn't need the Fountain of Youth. From what we see in the ending for Op. F.O.U.N.T.A.I.N., she drinks from a regular fountain as an elder and she is back to her youthful form. The Fountain of Youth was just a ploy to throw people off from knowing about the real secret, and she probably disposed of them to ensure they don't reach that discovery.

Numbuh 4 has a learning disability.
Numbuh 4 isn't dumb. He has a severe learning disability that, at the time he was in the KND hadn't been noticed yet. The audience doesn't pick up on it because we don't see him doing schoolwork that much. Most of what we know comes from comments about how he’s a terrible speller and has a poor memory. Think about it: impulsive, short-tempered, doesn't listen well, has difficulty spelling even simple words, has a misunderstanding of the English language... the signs are there. Sometime around 5th grade or early middle school a teacher probably notices and does something. It turns out he's sort of smart and so with help he's able to catch up and even takes an advanced course or two in high school. When he hits college he does well because he's spent the last six years or so working hard so he's used to it and doesn't flounder in the harder environment. From college he gets into Harvard med. He only seems stupid to us right now because he's spent the past five years falling behind.
  • Is his learning disability the fact that he earnestly believes there’s no difference between learning and making stuff up? Because he just makes stuff up. Like how to spell words. Or history.
    • No, he just does that when he's frustrated. He can't remember what the right answer is so he just goes, "Aw, screw it," and puts down the first answer that pops into his head.
    • Possibly jossed? In Operation R.O.B.B.E.R.S. he admits that, at least for his spelling homework he was making up the answers as he went along. He wanted to impress Ms. Thompson with his new creative spelling ideas.

Either all of Sector V got a promotion or this is just the beginning of the KND's story.
In Operation I.N.T.E.R.V.I.E.W.S, Numbah Five states that she was promoted to supreme leader after the events of the story, leaving Sector V down to three members. It has been shown that Sectors can have more than five members at a time (Look to Operation G.R.A.D.U.A.T.E.S. for an example), but the smallest long-term group of KND ever shown is about four. Why is this? Because if the leader leaves, the second in command takes over; if the second in command leaves the team is sunk. the only exception to this is non-sector members, who are on call at any time at moon and artic bases. It would stand to reason that these more dutiful members are higher-ranked. So, depending on your point of view either the members of Secor V became one of these higher-ranked members on request from Numbah Five, or one of these higher-ranked operatives got promoted to new Sector V leader. This opens up doors for speculative fanfiction.

Johan Liebert is responsible for the war.
It turns out his actions of murdering adults since he was a kid are recorded. With this Johan plans to use the war to cause The End of the World as We Know It. If it continues to happen he'll succeed.

Numbuh 1 has a crush on Numbuh 3.
No, seriously. Despite dating Lizzie the evidence is there. In Operation Z.E.R.O., Numbuh One says some sort of an emotional bit of information about his relationship with each member of Sector V, but for Numbuh Three, he just says "Kuki..." and holds her hands. In "Operation W.H.I.T.E.H.O.U.S.E." Numbuh Five asks him "Who had a crush on Numbuh Three... and don't say Numbuh Four." He then smiles in response. Many other moments suggest this, but I'm not in the mood to list them. But you see what I mean, right?
  • I think it's jossed by now.
  • In the same vein as this:

Numbuh 1 has a crush on Numbuh 362 and she feels the same.
There is evidence to suggest this as well. They share some surprisingly deep moments in conversation during "Operation: I.T." and "Operation: G.I.R.L.F.R.I.E.N.D." where she asks him to have lunch with her (after playfully threatening to make it a direct order). They certainly respect each other well enough and she seems attracted to him even after berating him for his reckless tendencies. Furthermore in operation F.U.T.U.R.E, the Boys Next Door's leader looks strangely like both of them with Nigel's blue eyes and unique head shape (Even having an eye patch that looks suspiciously like Nigel's glasses) and Rachel's blonde hair suggesting that he is possibly their grandson.
  • I think Rachel liking Nigel is pretty damn obvious, but if Nigel does return her feelings, then he must be Oblivious to Love (including his own) or we would have never seen Lizzie.

Numbuh 1 goes out with Lizzy because her bossiness fuels a secret desire of his to be controlled and dominated that he's still too young to understand
Numbuh 1 spends all his time ordering his team around and telling them what to do he always has to be on top of things (plus his parents don't exactly do too much to control him) so maybe in a sort of twisted way having someone else boss him around has become a fantasy and eventually a fetish that his prepubescent mind isn't capable of understanding and so caused him to seek out the bossiest girl he could find, there's also his supposed crush on Numbuh 362 who certainly does spend a lot of time yelling at him... besides all that what else could he possibly see in Lizzy?

Numbuh 1's mom was a paramedic or police officer in the KND.
Her designation was Numbuh 999 which has the British emergency number.

Codename: Kids Next Door is the past of the Spy Kids series.
Numbuh 5 (as the supreme leader of the kids next door) eventually met up with Devlin, head of the OSS and the KND became part of the kids division.

One of the meddling executives has friends in the American Dental Association.
This show does a good job of making sugar unappealing. Do you want candy after seeing Stickybeard? I sure don't. I posit Mr. Warburton was asked to make the show tooth friendly by portraying candy as gross-looking and sugary cereal companies as morally gray. Knightbrace was conceived as a Take That! to this request even though the actual dentist is portrayed positively.

The GKND actually had a hand in creating and/or funding some villains.
We know that they test KND members to find who is deserving of joining them. Villains are frequently arrested and sent to KND prison but somehow escape and manage to start causing trouble once again. Also, there's the question of how some of them manage to get such high-tech technology. Theory? Some villains are intentionally created, freed from prison or funded by the GKND to test the Earth branch so they can select operatives. Not all of them but some that aren't major threats.

The KND is a socialist organization.
Remember being the leader means having a "willingness to share your candy with everyone" and that they also seem to ration things like ice cream?

The KND is funded by good adults.
Let's face it, a lot of the stuff the supervillains do would outright sicken any normal-minded person (case in point, Knightbrace) and someone questioned where the KND got their funding. Well, look at it this way, most normal adults are not skilled or smart enough to take down the supervillains, particularly high-powered ones like Father, so they fund the KND, who are very good at it. Yes, it puts kids in danger to some extent, but it stops the extremely abusive adults from harming them, as the kids can defend themselves on the spot. Just an idea.
  • Child soldiers? Definitely. Child sacrifice? *shudder* Maybe, maybe not. Either way, I wonder if this means that C:KND is somehow connected to The Hunger Games?

The DCFDTL gave Numbuh 1 cancer which got treated soon after.
Numbuh 5 mentions that the last time the Delighful Children took a kid, they did something she can't forgive, which Nigel says was making him bald. The DCFDTL have shown a strong desire to kill Numbuh 1, even against Father's orders. It's possible they gave him cancer to infinitely dispose of him without it being traced to them. After Numbuh 5 rescued him he got a treatment that left him bald.

Numbuh 5 has a crush on Numbuh 1.
She’s extremely concerned with his well-being. There's plenty of evidence of this if I remember right, but I'll have to go watching some episodes again to find them.

There are a few episodes that take place somewhere in the city like Operation D.O.D.G.E.B.A.L.L., Operation D.O.G.F.I.G.H.T. and Operation U.T.O.P.I.A., though the layout and size change depending on the episode. It is usually shown to be massive. Many of the buildings in Cleveland resembles ones from the real Cleveland, Ohio, and there is a beach frequently shown throughout the series that closely resembles the real Virginia Beach. There also appears to be buildings based on ones from Detroit, Boston, Richmond, Philadelphia (where Mr. Warburton was born), and New York (where Mr. Warburton lived at the time CKND was produced and where Curious Pictures was based).

  • The show already did a Mini Golf Course of Everywhere in Operation M.I.N.I.G.O.L.F. This would be a Serial Escalation of sorts.
  • They did something similar with Hillwood according to that show's Word of God.

The ones behind the KND's seemly improbable tech are a) Sparks or b) Whispered.
How else do you explain the KND having aircraft and other forms of transportation (they busted out mecha a few times as well) beyond what kids should have or be expected to make much less their improbable weapons?

Also, to support the whispered idea, in the manga and novels of FullMetalPanic, Tessa designed and made the ECS stealth system at the tender age of 9.

Numbuh 5 has a crush on Numbuh 2.
I'm surprised this wasn't up here before but maybe it's because in the end they're an Official Couple. While Numbuh 5 may tease him for being a nerd and react harshly to him cracking jokes it's hinted that she's jealous of any other girl he flirts with. In Operation UNCOOL she seems very irritated with how gung-ho Numbuh Two is to save Numbuh Seventy-Eight but is then outraged to find out he wanted to save a Yipper card. In Operation: COUCH, when he comments that Numbuh Ten is "easy on the eyes" she quickly elbows and glares at him. Also, Word of God says she might secretly like his jokes and puns but is in denial. This would explain why she gets angry at him compared to the others who groan and move on with their lives. It'd also explain why she uses jokes similar to his when he's not around.

KND is in the same universe as Red Dwarf.
They changed their name to the space scouts in the early 22nd century. Rimmer and his 3 older brothers were their sectors, and much of their evil was part of an elaborate, long-term (and unauthorized) hazing. This also explains his obsession with becoming an officer: As a child his brothers held him back from becoming anything important in the KND and he never really got over it.

The designation of Numbuh 2’s brother Tommy, Numbuh T is a number.
This is probably one of the most far-fetched WMGs but… "t" is technically a number, specifically a variable. In physics and algebra it usually denotes time. The numeric value of variables always changes so Tommy's number could mean that with time he has the potential to become something great. No?? Yes???
  • Also makes sense since Tommy is about as prone to harming the KND as he is to helping them. The amount of good he does is variable. Fridge Brilliance anyone?
  • I think we've only scratched the surface here. The fact that he’s Numbuh T as opposed to any other algebraic letter is vitally important. If "t" denotes time it doesn't just mean he'll have more potential as time passes but time itself is significant to him.

The KND is funded by the United Nations.
Related to the "funded by good adults" theory above. In addition to fighting supervillains, the KND act as a kind of worldwide militia, keeping their local communities safe and defending their citizens. It also helps explain why they have what amounts to military-grade weaponry and space forces: the UN gave them the money, resources, and permission.

Numbuh One's balding from the Delightful Children and Numbuh Five's Greatest Failure are separate incidents.
It's possible to make the connection of when the DC made Numbuh One bald is the mysterious incident that Numbuh Five grimly refers to as "you-know-what" when offered temporary leadership of Sector V again in "Op: FERAL." However, based on what we know from the show, this is unlikely:

Three years ago from "Op: MAURICE," Five was the newest member of Sector V. "Op: TREATY" reveals that sometime after that One was bald before joining the KND, and thus had his encounter with the DC before he was an operative. This means that for both incidents to be the same, Numbuh Five must've been Sector V's leader when the DC made him bald, which seems unlikely if Cree (who seemed to be the leader at the time of the "MAURICE" flashbacks) was still a KND operative and Five was the junior operative.

It's more likely that they were two separate incidents. The first was when Five was a junior operative and the DC gave One hell of a Traumatic Haircut, and the second was when Five was the leader of Sector V and was so unpleasant that it made her renounce leadership. Thus by the age of 11, Numbuh Five has experienced two traumatic Noodle Incidents in addition to the betrayal of her sister and her candy-hunting partner.

  • Number 5 could still blame herself for whatever happened to Nigel even if she wasn't the leader of Sector V at the time.
  • Left ambiguous.

Bruce and Alessandra are twins.
I don't know if this has been confirmed or not but they look like twins to me.
  • The thing about the C.A.K.E.D. episodes is that since all of the DCFDTL have different birthdays they celebrate it five times a year. Could still be biologically related as siblings or cousins though.

The KND and everything related to it was created through the power of the imagination of children.
One day, before the first age of the KND a group of kids was looking to have fun. So they imagined that they had bad guys to play with, plus incredibly sophisticated equipment and facilities. And through the tremendous power of imagination, these things became a reality. Unfortunately, the kids eventually lost control of their game, and now the villains want to hurt them rather than play.
  • A nice twist on the overdone and lazy "it was all a dream/in their heads/everyone is dead" theories. I like it. It would give a nice explanation of the silly kid-based themes of the show.

Numbuh 5 has a crush on Numbuh 4 and she is in denial about it.
Think about it: Abby keeps teasing and playfully insulting Wally, which is typical for young kids to do with their crushes; the fact that she teases him about his crush for Numbuh 3 could be a way to forget about it/I Want My Beloved to Be Happy kind of thing. And in both Operation SNOWING and Operation AFLOAT she is the most desperate when Numbuh 4 is captured/eaten (in the latter, she even shouts "NOOOOO! Not Numbuh 4!".
  • You got MY vote. Correct me if I'm wrong, but her jabs at #4's expense don't seem nearly as sharp as those towards #2. (On another note, in both incidents you mentioned, #4 was the final victim each time.)
  • Jossed.

A little info about teenagers.
As we've seen in Operation: POINT, most teenagers don't care about the child-adult conflict. Yet every teenager after that is hostile. Why? I don't recall hating kids when I was a teen! I loved them!

Maybe the Teen Ninjas are a PMC group. Since in the real world adults will pay teenagers looking for work the Teen Ninjas are simply hired goons for the adults. They're not cheap but have great skills.

At the same time the ones we've been following are loyalists. There’s also a faction of separatists who turn against Father for various reasons.

Kuki can't speak Japanese very well.
Let's ignore that in Operation: TRIP everyone in Japan speaks perfect English. I like to think that Kuki is dissociated from Japan and either she can't speak Japanese or she can't speak it very well. Her Japanese is broken and she doesn't know any of the cultural standards.

What makes me think this? First of all it's funny. Second, a big clue is in her name: Kuki. Mr. Warburton responded when asked that it's supposed to mean "air", which is incorrect because "Kuki" in Japanese means "flower stem". But, the word "Kuuki", which is close actually means "air". She may be been misspelling/mispronouncing her name all this time.

The ranking system is as follows:

Hostile/Dangerous: Species hostile and/or hazardous to the Galactic Kids Next Door (e.g. the San 'Shyuum (Prophets) and the Jiralhanae (Brutes), the Combine, the Reapers and the Collectors, the Daleks, the Sontarans, and the Cybermen, the Angels, the Drej, the Romulans (or more specifically, the Tal'Shiar), the Incubators, the Hirogen, Species 8472]] (AKA the Undine), the Elachi, the Cardassians (or more specifically the Obsidian Order and the True Way), the Iconians, the Tholians, the Breen, the Fek'Ihri, the Terran Empire, and the Borg, the Necromorphs, the Kzinti, the Irkens, the Shivans, the Scarrans, the Metarex, the Heartless, the Nobodies, and the Unversed, the Deceptions, Blentrons, and Vehicons, the Drakons, etc.).

Unknown/Unimportant: Species either not technologically advanced enough to know about the GKND or that are just ignored by the GKND, and in turn are ignored (e.g. the Yahg, the Vorcha, and The Keepers, the Eosapiens, the Unggoy (Grunts), the Devidians, the Smurfs, etc.).

Neutral/Unaligned: Species that are not aligned with the GKND, its allies, or its enemies (e.g. the Atraxi, the Geonosians and the Noghri, the Boov, the Luxans and the Sebaceans, the Klingons, the Letheans, the Gorn, the Nausicaans, the Orions, the Ferasans, the Jem'Hadar, the Vorta, the Founders, the Deferi, and the Remans, the Leviathans, the Rachni, the Hanar, the Elcor, and the Batarians, the Utroms, the Vortigaunts, etc.).

Allied/Friendly: Species aligned with the GKND and its cause (e.g. the Wookies, the Vasudans, the Benzites, the Caitians, the Romulans (or more specifically, the Romulan Republic), the Cardassians (or more specifically, the Depata Council), the Pakleds, the Ocampans, the Bajorans, and the Trill, the Geth, the Volus, the Krogan, and the Quarians, etc.).

Represented: Species who have an actual operative working in the GKND (e.g. the Sangheli (Elites) and the Huragok (Engineers), the Turians, the Drell, and the Salarians, Humans as of Operation: INTERVIEWS, the Bolians, the Saurians, the Rigelians, the Ferengi, and the Betazoids, the Darkstalkers, the Hobbits, etc.).

Fully Integrated: Races whose KND branches have been absorbed into the GKND (e.g. the Asari and (formerly) the Protheans, the Mon Calamari, the Quarren, the Chalactans, and the Kel Dor, among others, (historically) the Gallifreyans and the Time Lords, the Banneck, the Vulcans, the Andorians, the Tellarites, the Regulans, the Talaxians, the El-Aurians, the Liberated Borg, and (formerly) the Preservers, among others, the Mobians and the Seedrians, the Autobots, etc.).

Numbuh Four grew up to be Robert Chase.
We know he grows up to be an intelligent Australian doctor. Why not that one?

The Uno family are descendants of Aku.
It's not hard to see the resemblance between Aku and Grandfather. They also have similar powers.

She knew it wasn't Nigel but decided to go along with it until the right time. However, when she did Mandy convinced everyone she had the same "virus" and had Rachel locked away.

The show spans over a year and a half.
In Operation: C.A.K.E.D.-F.I.V.E., Numbuh 1 mentions that the Delightful Children's birthday happens five times a year. There have been 7 cake episodes: C.A.K.E.D., C.A.K.E.D.-T.W.O., C.A.K.E.D.-T.H.R.E.E., C.A.K.E.D.-F.O.U.R., C.A.K.E.D.-F.I.V.E., S.I.X. and I.N.T.E.R.V.I.E.W.S. Plus at least one comic example.

There never was a GKND to begin with.
It was all done to mislead Father. In truth, the cake WAS that big and not a spaceship. However, it was possible that Numbuh 1 had reached 13 and had to be decommissioned, or something happened that made him choose to "retire". But since he was the best operative of the KND, he was allowed to "end it with a bang" and able to eat a big cake held together by rockets. The Delightfuls did die so Father was out for vengeance. If they had told him the truth, Nigel's family would have all been in BIG trouble. As for Numbuh Five saying "welcome back" at the end.....most likely he was recommissioned too, but why? Because he's dying (they were pretty old at that time) and someone wanted him to know what he lost before he dies?
  • I think this is jossed.

That Mirror Universe... before the DNK reformed I could imagine the "villains" as this... Father and the Delightful Children were already shown
  • Mr. Boss: A janitor forced to work because of speaking out and being sentenced to the Broccoli Mines. However, he escaped and was outraged to find out that his daughter was a part of the organization. He tries making plans of sending DNK Members and adults to Pluto but he's too poor. After the defeat of Negative Numbuh 4 he and his daughter were able to make peace and Mr. Boss got a more respected job.
    • Fridge Horror here: Mr. Boss in the positive universe genuinely loves his children but hates all others. So his negative counterpart must love all other children but hate his own. It probably explains Negative 86's shy, meek behavior.
  • Knightbrace: A dentist who sees how adults have neglected their teeth so he tries to make the adults have their teeth done much to their chagrin. He serves as a dentist mascot now.
  • Chester: Oh, Chester. Chester does weird crazy stuff to all of the adults. He has probably killed a few adults and DNK members to try and support the cause. Chester gets sent to Brocolli Mines by the reformed DNK because of his bizarre behavior.
  • Toilenator: Actually competent in this universe. He's considered the leader of the group and is the one who has the secret meetings. He and his members plan to take out the DNK and hope for the world to become a better place. Toilenator rigs toilets so they can send kids to secret bases, liberating more children. When the DNK reform, the Toilenator becomes their greatest ally.
  • Common Cold: Gives children sicknesses they don't have to be slaves for their sick period. When the DNK reform, he instead tries to make adults who still believe in the DNK sick...
  • Gramma Stuffum: Makes delicious food... for the children to eat. She normally sneaks food while the adults or DNK aren't looking. As for those two? She forces them to eat disgusting food.
  • Chad Dickson and Cree Lincoln: Chad and Cree were working for a liberation movement, but Chad was an agent for the DNK, spying on the liberation group and getting the DNK to work one step ahead of the liberation movement.
  • Numbuh 362, although not a "villain", wasn't present in the episode. Maybe she was considered afraid and dumb. The Toilenator probably captured her by tricking her into a trap or something. Once the DNK reformed she was probably released. As for her younger brother he probably has no fear of being touched and is considered pleasant, similar to Negative Numbuh 86.
    • A troper sees Negative 362 as more along the lines of Negative 86's subordinate, similar to how Positive 86 was often seen in 362's shadow later in the series. She's not as level-headed or authoritative as depicted in the original universe, instead much more temperamental, extremist, and even misogynistic against girls (the polar opposite of misandrous, which 86 is).
    • She could've also been one of Negative Numbuh 4's bodyguards (like Negative 86) while he was still the DNK Supreme Leader. However, the relationship between the two was probably along the lines of abusive, given how Negative 4 constantly threatened to send any who got in his way to the Broccoli Mines.
  • Grandfather: A benevolent Big Good who ruled the world as a utopia where adults and children were both happy until Negative Numbuh Zero overthrew him. May have been restored following the DNK Heel–Face Turn.
    • Also hates tapioca to the core and will do anything to destroy every tapioca factory on Earth.

Numbuh 1’s parents come from Britain and he moved to the United States when he was three, right? Well... the thing that confuses me a bit is that Grandfather's reign took place in the US...
  • I'm starting to think Numbuh 0 met his wife in Britain...
  • I'm inclined to believe that after his defeat Grandfather moved his family to England. Father and Numbuh 0 grow up there and when he was old enough the former moved back (which is why his American accent is more pronounced). Then Numbuh Zero moves there with his dad, wife and child years later. Nigel was 3 so he wouldn't remember his grandpa moving with them or around the same time.

Assuming Operation A.R.C.H.I.V.E.S. isn't canon Numbuh 0's rebellion must’ve happened before July 1969. Also, Numbuh 0's around 50 years old.
  • Assuming Numbuh 0 was 10 years old when his rebellion occurred that must mean he was born around 1957-1959.

Numbuh 2’s mom used to be a member of the KND and something happened to her similar to what happened to his brother Tommy in Operation G.R.A.D.U.A.T.E.S.
  • She's one of few parents aware of the KND and the villains they face. The other KND operatives’ parents are oblivious, especially Numbuhs 1 and 4's parents - similar to how Numbuh 5's parents are oblivious to the fact that she and Cree are enemies.
  • She probably escaped decommissioning or pulled something like Tommy did to keep her memories.
  • It was confirmed in The Movie and Grand Finale that Numbuh One's parents were former Kids Next Door operatives Numbuhs 0 and 999. Also, maybe Numbuh 999 is an operative who didn't get decommissioned. Since she’s aware of their adventures and technology she must’ve been allowed to keep her memories after turning 13. She became a member of the Teens Next Door (TND) and was likely forced to retire when she became an adult; she also could’ve become part of the Adults Next Door (AND).

The KND world is a sealed pocket dimension whose guardians are the adults.
Every child, upon hitting their teen years, is then revealed the truth about how Real Life operates and is given the choice to leave or to stay and uphold The Masquerade. (If they try to break it, it's immediate expulsion.)No wonder the teens are so bitter—if they leave they're completely unprepared for life in the real world but if they stay they can't participate in any of the fun and they get to look forward to disillusioning their younger friends and siblings.

Numbuh 1 can get a shadow suit and flames like Father and Grandfather.
After all, they’re related. Grandfather mentions "[his] heritage" which could mean the powers. It does seem to pass down a family line: his uncle, grandfather, great grandmother and great aunts (the Annoyingly Cute Triplets) and great-great grandmother (the Annoyingly Cute Triplets' mother). Mr. Warburton confirmed it's possible in an interview.

The KND Universe is an alternate universe that Tom Warburton went to as a kid.
When Tom Warburton was a kid he had a treehouse. In this treehouse was a portal to another universe. Mainly the KND universe. He went into the treehouse and went to the KND universe and couldn't get back to our world. Tom saw Sector V fight adults, and he learned about the KND. He managed to convince them to let him join.

There Tom became an operative on the Moonbase. He would eventually become fascinated with Sector V. Tom then looked through their mission reports and interviewed people who knew them.

When he turned thirteen, Tom fled back to his treehouse and stumbled back to our world, though oddly the same age he was when he left. Inspired by the KND, when he grew up he created a show on the sector he thought was interesting. Thus, Codename: Kids Next Door was born.

The Book of KND is a Necronomicon for children.
Makes sense, doesn't it?
  • Maybe an anti-Necronomicon of sorts. As noted by Numbuh 0 the book helps slow down the aging process of Grandfather's powers. Its true power may be something close to a Fountain of Youth. The reason 2x4 technology’s outlandish is because of Scientifically Understandable Sorcery.

The reason Numbuh 1 isn’t shown as an adult in the final episode...
... Is that Cartoon Network couldn’t afford Patrick Stewart, the only actor who could've done the role justice. Just picture him with sunglasses and that's Numbuh 1 as an adult. Heck, Numbuh 1 was even in the Galactic Kids Next Door and Stewart has experience in a similar role as a starship captain in Star Trek: The Next Generation.

Numbuh 5 wears contact lenses.
She was originally meant to wear glasses and the Cartoon Network site once said they were a secret. Likewise two versions of her have been shown wearing glasses.

The Unos' powers (we'll call it "the Inheritance") needs some kind of trauma or strong emotions to work.

This possible video of a sequel series.
Whether or not this is legit or a REALLY good fan film it seems the Galactic Kids Next Door were the Splinter Cell after all!

Numbuh 1 is dishing out a Cool and Unusual Punishment in the GKND teaser.
The next part of the reveal is scheduled to come out on April 1st and there have been hints of a continuation starting from two years ago, which makes it unlikely that this will be a straight-up Bait-and-Switch for April Fool's Day. If there's going to be any funny business it's probably going to have to do with the vague contraption Numbuh One is activating.

Numbuh 1 will get a What the Hell, Hero? from his friends when/if the new series is greenlit.
  • It’d be in the very first episode or when they run into him.

GKND will air on [adult swim].
  • This is a WILD guess, but... Maybe it’ll be targeted towards older teenagers and adults rather than younger children ages 10-13 or so.
  • Not to mention that most of the original fans are teens and adults by now and the show might get even more recognition through Checkered Past, giving it a bigger chance to be greenlit.
  • They revived Samurai Jack there so why not?
  • There's also a chance GKND may also have next-day streaming on Max and/or Prime Video when/if it comes out like My Adventures with Superman. Or it could be streaming-exclusive like Adventure Time: Fionna and Cake.

The entire series is a satire on Communism.
Think about it: The Kids Next Door is the rebellion against tyrannic adults who represent various Tsar leaders or whatever Russia was before Lenin took over. The adults believe in what is 'right' for kids but the kids have to rebel because whatever they are doing is just too boring. There are also references to a Serbian detention center in Gallahager Elementary. The KND operatives represent various communists who want equality for all children. The DCFDTL are former KND operatives and represent Stalin of the Russian Revolution. The Delightfulization process is essentially what happened to Joseph Stalin when he gained power over the motherland. The DCFDTL wear identical fancy clothing, tend to treat themselves higher than other kids and are involved with cake which they plan to eat by themselves. Also, if you remember Operation E.L.E.C.T.I.O.N.S, the DCFDTL used various forms of propaganda to set the students against each other, just like how Stalin ordered the many classes to report on each other to ensure total power. Besides that the Russian sector has a freaking Sputnik replica.

The majority of enemies the KND face were caused directly or indirectly by Grandfather and his reign.
We know the first time Grandfather only enslaved kids (though it's likely adults didn't have it easy either given Grandfather's level of evil); it's possible he had enforcers. The majority of villains the modern KND face are descendants of people who worked for Grandfather in some way or another to run his Villain World, having imprinted their respective mentalities on their descendants. Perhaps Grandma Stuffum was the daughter of someone who made gruel for children, Mr. Boss is the grandson of a slavedriver, etc. Alternatively many of them have Grandfather's reign as their direct or indirect Freudian Excuse. As for the various monsters they were all created by Grandfather to torment children (and sometimes adults) in some way, shape or form for his amusement. This is especially true for creatures like the Queen Tie and her brood who seem to exist for a very specific reason. Hey, the guy traumatized one of his sons with a vegetable, would you put it past him?

Their guns transform kids' clothing into very polite, proper outfits, not quite the uniforms that the Delightful Children wear but closer to the delightful ideal than the street clothes usually sported by Sector V. But their weapons clearly can't Delightfulize children entirely: Sector V shakes it off once the Proper Patrol leaves, changing into their normal outfits. There might be at least two reasons for this: the Proper Patrol is underfunded and can only afford lesser versions of Delightfulization weapons or the in-universe technology level as of Season 1 might not be up to personal-scale portable Delightfulization. One might wonder if Father or another villain is funding and equipping them for testing out portable Delightfulization weapons...

Stuffum is secretly a metalhead and fan of GWAR.
She DOES have a knack for singing it as shown in Operation: F.O.O.D.F.I.T.E.

Codename: Kids Next Door and South Park share a universe.
Think about it: They're both focused on kids, set in worlds full of surreal terrors where adults are completely incompetent when not outright evil and every child is smart enough to count as an adult. In particular, South Park: The Stick of Truth revolves around a massive war where Your Mind Makes It Real and LARPing a knight or wizard is Serious Business. It's even got the Big Bad Government Guy who eventually wants to steal the Stick of Truth, effectively enslaving children's imaginations.

GKND, when/if released may be a mini-series.
  • Unlikely. Even if on streaming shows like Fionna and Cake having up to 10 episodes per season and passing the one-season mark goes to show GKND will end up warranting multiple seasons as well.

The Off-Beats and Populars are agents of the KND.
The Off-Beats and the Populars are their own "numbuhs" as well - but the branch suffered a schism due to half of them (Tina, Beth, and the other three) getting captured and subjected to the treatments that were either a precursor of or a failed attempt to recreate the "Delightful kids". However, this did not work as intended - as the kids still retain a sense of individuality (except for three of the boys, who do whatever Tina says) but have fooled all the adults (Sans one) into thinking that the treatments worked. (Note how they always behave after Beth shouts "Adult!"). They still maintain contact with the other group that escaped though, the "Off-beats"... and in fact, have an agent within them who has fooled the adults into thinking that the peer pressure has made them as susceptible to the "hive mind" as the others. This agent is Billy - whenever he is thrown out of the Populars group, he actually goes right to the Off-beats' meeting points, gives more sensitive information, and then is back in the popular apparent hive mind. (The entrances are of course the trash cans that are nearby when he is "Thrown out") Whenever the popular interacts with the off-beats, it's antagonistic, but it's a secret code - they are giving messages about things they learned from the adults (Who trust the brainwashed popular to an extent) to the off-beats. Of course, there are some legit hard feelings towards each other - the Off-beats don't like that the Populars let themselves get caught or that they keep up the charade (and legit treat the info that comes from them and Billy with skepticism) while the populace thinks the Off-beats are old-fashioned (And August won't share his tech with them). AS for the off-beats, Tommy and Rapunzel are scouts, Betty-Ann gives secret codes to other field agents via her bongos (a la Gabriel Knight), and August & September develop tech for the group to use. The episode where the Populars steal Betty-Ann's glasses was all a ruse - Betty-Ann's glasses are hollow and allow for the concealment of messages in them. So under the guise of bullying Betty-Ann, hid an important document inside her frames and allowed the Off-beats to "Take them back". Many of the Off-beats, well, off-beat behavior is part of an act to reduce suspicion from the adults - since the Populars acting like "spies" actually led to the schism happening anyway. Beth still loves Tommy, but the pressure of keeping up the "Delightful child" is too much to allow her to depart from the group. September meanwhile is also a spy -, in the valentine's day special, February the cat is another spy and was held up in trying to meet with September (back when he was still a field agent rather than a local commander like he is here.)

The events of the series are just the kids playing with their imaginations.
This theory is directly inspired by the cancer theory which is Number 1 having cancer and the series is set in his imagination. The kids are just regular kids playing with their imagination, The delightful children are just kids who are afraid of getting into trouble with their parents, KND believed that the delightful children were brainwashed by their father after their parents kept telling them to be more like them. Number five's sister is just a normal teen who is imagined as a villain who occasionally causes problems for KND for her amusement alongside her friends or when she needs something from the KND. Finally, the galactic kids next door were just kids who lived in another country, Number one had to move away with his family to another country and KND wanted to play one last game with him before he moved and they imagined that he joined the galactic kids. The events of Operation Zero are just his family getting involved with the game and the delightful children were allowed to play the game as well which allowed them to "escape" their brainwashed state but had to stop playing. Number one's baldness is just because he prefers to have a buzz-cut hairstyle or he has Alopecia. The villains were imaginary views of adults, family members, or kid stuff.

This explains why KND has technological advancements and the adults are oblivious to episode events, it's just kids playing with their imaginations. Not all theories have to be depressing or involve cruel events such as cancer or domestic abuse, granted that galactic kids is a depressing idea but it was a sad episode for fans. This theory originated in the Youtube channel channelfrederator (as I am aware).

  • This explains why KND has technological advancements and the adults are oblivious to episode events, it's just kids playing with their imaginations" Not all adults are oblivious to their tech. In the KND universe, all adults are either stupid, evil, or both. They're either too stupid to notice or most just think the Kids Next Door are just people playing with toys. Alternatively they're used to it. Besides that, there's no evidence that the characters are "this or that in real life", as there's nothing to support their "real" personality in the cartoon.

King Sandy really is just pretending.
He got bored of just playing "King of the Sandcastle", and decided to be a evil/crazy king instead...pretending that he ISN'T pretending and NEVER breaking character unless his Mom calls. His big cousins play along because they find his Method Acting antics fun.

The whole "adulthood is a disease" thing isn't true; it's used as a cover for something more nefarious.
Someone rendered an immortal child has a grudge against adults in general for something adults connected with them caused and takes this anger out on every other species in existence with the options for inhabited celestial bodies being "decommissioning" or "empire where children rule and you're immediately demoted to slave class after hitting 13 or something". This naturally has dire consequences but the person is so caught up in their hatred and anger and use every aspect of their power to squash anything that might convince people like Numbuh 1 not to side with them.

The INK is a rogue faction of the KND.
The members of INK were once a sector of the KND's French division but ended up deserting due to some unknown transgression. To avoid the obligatory mind wipe that comes with leaving, they went to Pinkerton Academy, the location of which is unknown to everyone except for a certain few (the students and the teachers). When they found out that there was adult tyranny happening at the school, they were more than willing to take up the fight against it and created their team to do so.

Earth isn't diseased but the GKND believes so due to In-Universe Factoid Failure.
So far all sapient species the GKND encountered are incredibly long-lived by human standards and never undergo rapid physical changes during puberty. However, an actual incurable lifespan-shortening disease (or more than one) is sweeping the universe, affecting beings differently. The GKND is basically a militant CDC charged with containing the disease(s) at all costs - upon reaching Earth they see humans with lifespans in decades of our time measurements, assuming this somehow isn't natural and that puberty and aging are side-effects. To them "kid" and "adult" don't mean young and old so much as clean and infected - it's possible they don't have a fixed age for childhood like we do. Thus humanity can function fine and undergoes physical changes necessary for procreation while to the GKND we appear diseased.

There's a reason Lizzie and Constance look so similar.
Lizzie and Constance (the pig-tailed girl in the Delightful Children) have similar character designs and the show poked fun at this on one occasion. However, it's later revealed Constance and the rest of the Delightful Children were once the decorated Sector Z. Lizzie’s revealed to be a Galactic Kids Next Door operative conducting a covert operation on Earth. The human form she takes is simply a holographic disguise. Since most of the GKND's info on Earth probably comes from their terrestrial counterpart it's possible Lizzie's human appearance was based on one of their top operatives at the time.

REAL weapons like firearms don't exist.
In Operation M.O.V.I.E., pay attention to the movie poster for "Violence: The Movie": one of the characters in the poster appears to be holding pop guns instead of real guns and this might establish in the world of Kids Next Door that REAL weapons like firearms do not exist and the KND use 2X4 tech as improvised weapons; therefore we never see the KND nor evil adults use REAL weapons.

Someone or something like the Manipulators started it all.
You can obviously guess they're sitting back watching the age groups of humanity and even other species destroy each other over relatively minor circumstances.

Numbuh 4 has autism.
First, have we ever seen Numbuh 4 hug someone on purpose? Second, most people with Autism often have a hard time in school because of their condition and may be called dumb. But when someone helps them understand it uniquely (usually catering to their interests) they learn faster and better than their classmates and usually excel in STEM fields. Word of God already confirmed he would grow up to be an intelligent doctor which seems like a natural progression for that scenario. Lastly (this is speculation here), Numbuh 4's boyishness and hatred of everything girly comes from a 'phase' or 'special interest' he might have as many autistic people have 'special interests'. Speaking from an autistic troper anything outside your current interests would be seen as disgusting or awkward.

The Delightful Children are generally from Boston or Philadelphia.
In the episode about the fourth ice cream flavor they refer to sprinkles as "jimmies". Numbuh Five chews them out for using the term but clearly she's never been to Boston or Philadelphia where it's popular.

The GKND doesn’t know about Grandfather and if they did they'd be scared of him.
If you type Grandfather's name into the Rainbow Monkeys website nothing comes up; it says "inexact" like Numbuhs 0 and 999 who are one of his sons and his daughter-in-law. If their reaction to Father is "DANGER DANGER DANGER" you can imagine how they'd react to his dad. If Grandfather returned again would they abort their mission or do it much sooner?
  • Confirmed.

Numbuh 362's favorite color is purple.
Just a fun little theory as it's the one color that carries over from all of her past outfits. In M.A.U.R.I.C.E the younger her wears a purplish red t-shirt dress. In F.U.G.I.T.I.V.E. her belt and armbands are purple. By G.R.A.D.U.A.T.E.S her boots are a shade of purple. In her remaining appearances the stripes on her sweater are purple along with the sabers. Plus her robe is purple in I.T.

If Galactic Kids Next Door becomes real Numbuh 362, Numbuh 60 and Cree will star as Breakout Characters.
  • For many character descriptions it's something more silly or lighthearted. However, Numbuhs 362 and 60 are listed as fugitives and Cree's been captured alongside Chad. I don't feel like these are simple throwaway lines. For thoughts on the roles they play Numbuhs 362 and 60 are part of a resistance group already in place and Cree tries to escape with Chad so she can reunite and hopefully make up with Numbuh 5.

The Fourth Flavor’s taste is different depending on who eats it.
In F.L.A.V.O.R. we never hear what Numbuh 5 thinks the Fourth Flavor tastes like but it’s implied to possibly taste like a sundae since that was the “Flavor of the Day” password. Then in Operation: Z.E.R.O., after Numbuh Zero has his memories restored, he calls Blurpleberry ice cream “the closest thing to The Fourth Flavor he’s ever tasted”.

Delightfulization slows down aging.
In Operation: ZERO we learn the Delightful Children are really Sector Z. Matt called them legends and never mentioned how long they were missing.

In a fan interview Mr. Warburton does say the Annoyingly Cute Triplets from Upon the Hill are delightfulized. They were active in the middle of the 19th century (Hoagie calls Numbuh 19th Century a Victorian operative in a tie-in novel) putting them at the earliest from 1837. One of them produced Grandfather who then had Numbuh 0 and Father. Why did three generations (counting Numbuh 1) pass in only about 150 years or so? That triplet may have once delightfulized Grandfather (or at least passed on the "delayed aging" part and stuff).

Numbuh 0 was the first Supreme Leader before Numbuh 100.
He founded the seventh age of the Kids Next Door and defeated his father. He likely wanted to make sure it went like it was supposed to when he found the book and stayed in charge for a while.

The Kids Next Door is real.
It's blatantly obvious. The reason you don't remember most of your childhood? The Kids Next Door wiped your memories. The reason why no one knows the Kids Next Door is real? The G: KND is behind all the media wiping. After centuries of fighting the tyrannical adults the KND grew tired which led them to OPERATION: I.N.C.U.B.A.T.O.R:

Inconspicuously
Nullifying
Content
Unleashed
By
Adults
To
Obliterate
Reality
As a way to preserve their history and to warn others the Kids Next Door hired Mr. Warburton to write their lives. He was trusted with the information given to him despite becoming an adult. Most of the adults up in a sort of government hierchy know this fact themsleves, and are working with the G:KND to convince everyone that the KND isn't real, so that they can hide from the shadows. Most of you likely willingly got rid of your memories, tired from all the fighting. This cartoon is what remains of real human history. Don't let them find you, Nu-

Numbuh 1 is a genetically modified Rainbow Monkey.
This is why his head looks like that of a Rainbow Monkey.
  • He turns into one in Operation: F.E.R.A.L. but we don't know if that supports this theory or not.

Numbuh 5 is part of a candy-based cult.
It explains her knowledge of ancient sugar foods which seems almost occultic.

Operation: S.I.T.T.E.R was a dream simulation.
This is based on the episode where Nigel was put in a simulation in the president episode. The KND operatives do this, perhaps to everyone as a test. For Numbuh 2’s test it was to see if he was smart enough to put love aside for the sake of the destruction of all children. He failed and so they moved on to Numbuh 1. This explains why Numbuh 2 would have a dream like that in the first place.

The Galactic Kids Next Door embodies toxic childishness.
Each villain in the original series embodies toxic aspects of adulthood. For example:

In comparison the Galactic Kids represent the worst parts of childhood run amok. While the Earth KND primarily attacks adults and teenagers out of self-defense their galactic counterparts straight-up annihilate them. And while they might have some rationalization for their behavior it's possible they hate any adult telling them what to do regardless.

Underneath their noble images they'll turn out to be horrible uber-brats who only care about getting what they want and their campaign is pretty much a Suicidal Cosmic Temper Tantrum against anyone and anything who could or would reign them in. Even the other children they'd claim to liberate would suffer under their greed and selfishness. They'd have lives of comfort and indulgence while forcing fellow children to toil at their expense in the same way Grandfather forced children to toil for him by making tapioca.

In conclusion, the lesson of the story is that child tyranny can be just as bad as adult tyranny.

Numbuh One will have a crush on Lizzie’s true alien form…
… Because of Freaky Is Cool.

The Earth KND will have an Enemy Mine with their Rogues Gallery to take down the GKND.
The human youngsters, even with their arsenals and skills won't be able to take down not only a bunch of aggressive extraterrestrials but also ones that are part of an elite universal organization and have access to much more powerful and advanced weaponry. So they'll be forced to enlist the help of their foes (the Teen Ninjas, Stuffum, Knightbrace, etc.)

The villains will ultimately have no choice but to cooperate because they don't want to be killed. They'll begrudgingly work alongside the Earth KND and the Final Battle will feature a full-on war between them and the GKND. Father will refuse at first but shows up at the last minute anyway as a Deus ex Machina.

After winning many villains will actually thank the Earth KND for saving them and form an uneasy truce, ending the war between children, teenagers and adults on Earth.

Count Spankulot will be Exiled from Continuity and not appear in future media…
… Due to Values Dissonance over people hitting their children as punishment becoming less acceptable than it was in the early 2000s and before.

Numbuh 5 and Cree have a better relationship as adults.
And in spite of the Old Shame they're able to look back on all the times they fought while they were younger and laugh at them.

Numbuh 1 is Demisexual/Demiromantic and doesn't realize it yet.
For those unaware of what it is, someone who is Demisexual is someone who can only feel attracted to someone if they developed an emotional bond with them. With Lizzie, he claims to be in love with her, yet it's implied that they only started dating shortly before Lizzie's debut episode, not getting any time for him to truly build that bond with her. Thus, the duo has barely any chemistry with each other because Numbuh 1 can't feel attracted to her since they jumped into a relationship so quickly. Now compare this to someone like Numbuh 5 or Numbuh 362 (people who the fandom love to ship Numbuh 1 with), who Numbuh 1 is implied to have known for a long time and you'll see the difference with the amount of chemistry Nigel has because he already had that emotional bond with them. He just doesn't realize the difference yet because he's a) ten and b) implied to not be good with romance anyways.

Parental Obliviousness is due to decommissioning.
Considering the effect decommissioning had on Numbuh 0 and Grandfather it's not improbable that other former operatives would’ve been affected the same way. Also, it’s shown that some adults (Numbuh Two's mother or the mom in Operation C.L.O.S.E.T.) are aware of the Kids Next Door meaning it isn't universal. Going by this Numbuhs 5 and 4's parents could've been Kids Next Door operatives themselves!

The abandoned treehouse in "Operation: R.E.C.R.U.I.T." belonged to Sector Z.
Each KND sector has its own treehouse-style base and considering how Sector Z's been gone for years it had to be theirs.

Grandfather is actually an Omnicidal Maniac.
If the tapioca factories spewing smog and him ageifying non-human species like the hamsters mean anything.

The Ash Ketchum lookalike operative is Numbuh 151.

Operation A.R.C.H.I.V.E. got some parts of the information wrong.
I mean, they're kids. They're bound to get some information wrong, like the "creation of the adults" and Cleveland being the "first ever adults' paradise". One thing they did get right was Benedict's presence in the Kids Next Door and his transformation into Father.

The true antagonist of Galactic Kids Next Door will be the Soopreme Leader of the GKND themselves.
It'll be revealed the GKND weren't always dogma-driven extremists; there was a time when they had standards like the Earth KND, only apprehending evil adults and stopping evil teenagers. But that came to an end when they got a new Soopreme Leader who changed things for the worst.

Enter Numbuh Aleph 0 (alternatively known as Numbuh Omega), an incredibly powerful Psychopathic Manchild who's over 1000 years old but still a preadolescent in their species' lifespan. They have more nefarious views on fighting adult tyranny, believing the organization to be Cool, but Inefficient and taking it to the next level by wiping teens and adults off the face of the universe.

Many GKND operatives initially objected but their newest Soopreme Leader forcefully imposed their fascist views and if anyone tried speaking out or doing something about it they'd most certainly be punked. Thus they gave in to their will out of fear.

The GKND capitalized on Numbuh 1’s eagerness to join their ranks in order to brainwash him.
In an extreme case of Be Careful What You Wish For he took the opportunity to join the GKND but didn't think about the repercussions. Numbuh Aleph 0 could use his capacity for action as hook, line and sinker. Otherwise...

Numbuh 1's decisions with the GKND are More than Mind Control. This makes it worse since it’s Not an Act and he’s Not Brainwashed.
Depending on how long he’s been gone he could’ve already experienced the inconceivably, incomprehensibly, unspeakably and unimaginably terrifying horrors you’d expect. This makes him see the lengths adults go to have power over everything, believe The Extremist Was Right or the Strawman Has a Point and ultimately convince him to (albeit reluctantly) turn on Earth.

The Rainbow Monkeys website will have an update when GKND is greenlit.
And another followed by more updates until the Series Finale.

Numbuh Aleph 0 might’ve been on the Rainbow Monkeys website.
On the password screen you can see portraits of Numbuhs 9L and Vine respectively on the left and right of the screen in the background. In the middle is a strange figure not seen in animatics or anywhere on the original show. Perhaps that could be Aleph 0?
  • The website may have been edited so typing their name into the box does nothing.
  • Shown here.

The GKND flagship IS their base.
Like what they did with the Massive.

Sector V's parents and maybe some of the other operatives' parents are Breaking the Cycle of Bad Parenting.
Compare the members' Good Parents to their grandparents:

  • Numbuh 1's grandfather was a tyrannical overlord.
  • Numbuh 2's grandmother is a crotchety hag.
  • Numbuh 3's mother had a brief rant about how strict her mother was to the point of not letting her have toys.

We never hear anything about Numbuhs 4 and 5's grandparents but it's not out of the realm of possibility they weren't very good themselves.

Agreed. Even though we didn't see the grandparents of all families we got to see Numbuh 4's uncle (his dad's brother according to the comics) in the series... A LOT (maybe too many times) and he's clearly not someone who would be great if he ever had kids. And Numbuhs 4 and 5's parents also seem to be "reasonable and caring to their children" type of people.

The show's an alternate universe to Adventure Time.
KND is set in a world where the apocalypse never happened but magic still is around regardless; it's a wish alternate reality Tom Warburton (The creator or Codename: Kids Next Door) wished for when he went to Prismo's time room and asked for a world where the war didn't happen and that his idea for a cartoon was real

Abby is the reincarnation of the candy elemental but hasn't unlocked her powers yet.

Father is the reincarnation of the fire elemental.

Professor XXXL is the ice elemental.

The Common Cold is the slime elemental.

Grandfather is this world's version of Hunson Abadeer.

The bloodthirsty vampires were turned into spank-happy vampires so humans couldn't be hunted to extinction.

"Numbuh Moron" isn’t a member but an insult.
And this’ll be used as a Running Gag.

Numbuh 3 will be Running on All Fours.
It's Numbuh 3. It completely makes sense she can do something like that.

Numbuh 4 deeply hates Rainbow Monkeys and hamsters...
… Because Rainbow Monkeys and the treehouse hamsters are important to Numbuh 3. In the case of the former they're her obsession and in the case of the latter they're her beloved pets. As a result she lavishes attention and love on them which irritates Numbuh 4's explosive jealousy and further increases his already-present Testosterone Poisoning. He wants Numbuh 3's attention to himself but since he can't straight up ask to spend time with her without admitting his feelings he's grown to resent everything she holds dear.

The people Numbuh 1 knows (and then some) will try Talking the Monster to Death...
And be harshly rejected. Not only did the Secret Test of Character involving Lizzie work but his unwavering and relentless convictions along with the results of his new experiences have left him ignorant to their pleas; he'll easily brush aside their concerns and shoot down their arguments while fighting them without restraint, subjecting them to a verbal and physical Curb-Stomp Battle.

After a while everyone realizes it's pretty much hopeless and reluctantly retreats, leaving the confrontation with a Downer Ending.

Despite his Undying Loyalty to the GKND he'll actually start questioning their cause on his own and gradually be overcome with remorse.

Numbuh Aleph Zero could alternatively be an Absolute Xenophobe of the purest kind.
It could tie in to the above theory that the GKND somehow lied about the "adulthood disease" and really views all life, human and otherwise as violent and primitive. The fact they've got a Weapon of Mass Destruction mounted to their flasghip/base is a sign they're definitely not stopping at killing adults.

Sure Aleph 0 may be psycho-sociopathic and borderline nihilistic but there's a few operatives whom they have enough metaphorical heart to give a damn about; particularly their second-in-command and first partner Numbuh Nominal. While Nominal has differing beliefs they have matching interests and work on solutions to their problems.

Numbuh 74.239 knew about Numbuh Aleph 0's plan the whole time.
He helped bring Numbuh 1 to the GKND knowing his friends will eventually find him and learn the truth. And then Aleph 0 didn't know about Lizzie's betrayal until she's already communicating with the Earth KND so it shows some GKND operatives aren't as loyal as we think.
  • Either that or he caught up to Lizzie after she sent the warning but is faking her capture so he doesn’t get taken out.
  • Or he actually is somewhat supportive of Aleph 0’s plans and wants as little interference as possible. Who knows…
  • Maybe Lizzie dragged him into it by using her Hair-Trigger Temper for intimidation. That’d make sense.

Nigel gave in to the GKND's will for Lizzie.
As mad as she can be he really did care for her. Their breakup is most definitely going to take a mental hit on Nigel and it is going to come back to him when he gets to the GKND. Numbuh Aleph Zero will eventually use Nigel's desperation to win her back as a metaphorical carrot on a stick to get him indoctrinated.

Alternatively Nigel joined the GKND out of his own paranoia.
Being a Conspiracy Theorist he often jumped to the wrong conclusions and attacked the wrong people. Numbuh Aleph 0 capitalized on this, telling him his friends would eventually become teens and dump him just like Lizzie and that the GKND are the only ones he can trust. Just like that the paranoia kicked in. While initially a lie it becomes a Self-Fulfilling Prophecy - his friends did attack... because he shot at them, not the other way around. And they eventually became teenagers, just not during his first year in the GKND.

Numbuh Aleph 0 wears a mask.
Probably to continue the trend of characters having something cover their eyes. During the Final Battle the mask will be broken, throwing them further into a Villainous Breakdown.

Numbuh 0 formed the Adults Next Door (AND) not long after his second recommissioning.
Jossed. Someone else entirely might’ve started it without the Earth KND and TND’s collective knowledge.

Sector Z actually got permanently recommissioned offscreen.
Perhaps that giant toilet in Operation I.N.T.E.R.V.I.E.W.S. had something to do with it?
  • If the GKND (or at least the good GKND operatives) got ahold of them there’s no question their superior advanced technology could not only permanently reverse the delightfulization process but make them forever immune to it. This could probably happen when the Earth KND needs extra help against Numbuh Aleph Zero.

Toiletnator and some other adults will have a Heel–Face Turn.
He'll eventually get tired of being the resident Butt-Monkey, realize Being Evil Sucks, become a Spanner in the Works and pull off a Big Damn Heroes moment during the fight with Numbuh Aleph 0. This combined with the fact that the older villains were kids themselves and Grandfather's betrayal will eventually make other villains follow suit.

The Wigglestein/Uno bloodline was created by Invictus.
He may be the reason the family has powers. Considering he exists in all dimensions of The Multiverse at the same time it makes sense he gave birth to the first member in Nigel's family in this universe before he was sealed. Perhaps there's more Mac Guffins in this universe that contributed to his release.
  • Even if he doesn't die in Final Space: The Final Chapter, he may have another appearance or two. If he does die a villain could bring him Back from the Dead. Or he could appear in a flashback.
  • This probably is an alternate universe where Gary exists in an alternate form where he never goes to Final Space. Invictus will have to find other ways to get out.

Possiblities as to what Numbuh Aleph 0’s Weapon of Mass Destruction could be:

The GKND flagship’s main weapon is a Godzilla Threshold and they'll decide to attack Earth directly first.
Probably so Numbuh Aleph 0 can enjoy as much mayhem and carnage as possible For the Evulz. However, this gives the Earth KND plenty of time to catch onto the GKND's act and confront them directly.

Cree and the other teens will have a Heel–Face Turn.
Maurice eventually spills it about the TND and the other teens, while being understandably angry at first will gradually realize they threw their lives away for an evil cause that was completely avoidable. The revelation is going to force Cree and the rest to acknowledge they're no different from the kids they're fighting, making them try to help everyone else fight back.

The Earth KND will mount less powerful ranged weapons to places such as the Sector V treehouse and Moonbase.
As a defense system against hostile forces. Thou Shalt Not Kill could be applied so it's non-lethal despite disabling or seemingly destroying enemy vessels.

Nigel will get his hair back in GKND once he's freed from his brainwashing/snapped out of his conditioning.
Numbuh Aleph 0 is going to give him death by injection for his betrayal. However, one of the good GKND operatives will Out-Gambit them and swap out the poison with a formula that restores Nigel's hair. Of course, this is one of several factors that leads to...

Nigel gets his powers but doesn't turn evil.
Unlike his grandfather and uncle he has people who genuinely care for and will comfort him even if he nearly caused The End of the World as We Know It. He's most certainly going to have a Super Mode that would make him stronger than usual.

Nigel will gain enough courage and self-esteem to join the battle against Numbuh Aleph Zero.
And through his Super Mode he gives his allies and himself the Home Field Advantage they need against the revealed Splinter Cell though Toiletnator gave them a head start by clogging the GKND's main weapon.

Numbuh 1 will end up developing a Mighty Roar.

He’ll use the invasion to run political campaigns, sending Numbuh 1, Sector Z and the GKND on the run (see below). He’ll use his newfound authority to firebomb and destroy all Earth KND bases while labeling it as accidents or them shutting down due to a Guilt by Association Gag. The Moonbase doesn't count since it's been newly equipped with a cloaking device; Father has no way of making it there unless he hijacks a KND vehicle (which he does but for different reasons) and if he did the Earth KND would have tricks up their sleeves. However, as Grandfather has already passed away, his pipe's been recovered and his sole purpose is fulfilled Father falls into a depression over what to do next... Until he learns that Numbuh 1, still in exile has the Book of KND. Realizing his nephew possesses the means to rebuild he goes after him to destroy the book and thus ensure the KND is completely and utterly eliminated but the misery he's wrought is enough for Numbuh 5 or somebody to find a way to bring Numbuh 1 home.
  • Bonus if Mandy winds up becoming president after Father's defeat because it would tie everything together neatly with Underfist. It certainly gives her some kind of power without having to go through the KND first. She might do that anyway as revenge for ruining her last plan.

Numbuh Aleph 0 could also be going after the Book of KND.
To ensure nobody survives the GKND or finds a way to fight back.

Numbuh 1 will have a Fugitive Arc.
Even if Father doesn't have a smear campaign to back it up the invasion's recorded and Numbuh 1's seen by most as a lunatic who nearly wiped out humanity with very few among the masses recognizing he actually cared for his people and if it wasn't for him they'd all be dead or enslaved by now. Mixed opinions on his innocence will drive rifts in the KND as a whole leading to operatives forming their own factions and Numbuh 1 having to make a run for it to keep everyone else out of danger in addition to the guilt he carries. The good GKND operatives flee with him through their Guilt by Association Gag regarding the invasion but also to keep him company. Sector Z might join out of fear they'll be captured and delightfulized again or their actions as the Delightful Children will get exposed and they’ll be decommissioned for treachery. Even if Numbuh 1's convinced to come back he's wary of being hit with something like a protest or manhunt.

Of course this all changes when Father's brutal nature is revealed coupled with Numbuh 5 and/or Numbuh 362 along with the others convincing everybody to give Numbuh 1 another chance; people will suddenly know who they were following and rise up against Father. A ceremony is held across the universe for the KND once Father’s defeated.

Numbuh 362 will have a major role in the story.
Probably as a Hope Bringer and Living Emotional Crutch. While Chad managed to briefly get Numbuh 1 out of his trance it was merely because he hadn’t yet completely fallen for the GKND's manipulations. Rachel will ultimately be the one to break him free and when he goes into exile she’ll be the one to convince him to go home to confront Father. This will obviously improve an already strong bond between the duo, eventually putting them into Official Couple territory.

Numbuh Geo-4 really is just a rock.

Everyone learns of Numbuh 1’s familial connection to not only Numbuh 0 but also Father and Grandfather.
Father might reveal it to everyone out of spite during his leadership campaign to further cast doubt on his nephew’s credibility. While everyone calls Numbuh 1 out for keeping it a secret he’ll argue that if everyone knew they’d flip out regardless, to which they’ll end up agreeing.

Like Lizzie she might care enough about Earth to help them take down Numbuh Aleph 0.

The main operatives in the Time Skip aren't as old as we think.
Nigel doesn't just leave for decades when the GKND obviously has faster-than-light travel plus the Post-Splinter Cell GKND and EKND are going to merge operations at some point. Sector V probably used makeup, hair dye, prosthetics, etc. as part of a Batman Gambit against Father. It would only be a five-year Time Skip.
  • GKND's first season leading up to that point could also take place 1-2 years after Nigel first joins the GKND making the other two seasons take place 6-7 years after that event. If the GKND's flagship is their base the Time Skip could still retain the same amount of years.
  • Left ambiguous.

The GKND series finale will end with ANOTHER Time Skip.
Only the protagonists will be REAL adults and have kids to receive the torch. Plus the whole thing could be a Self-Fulfilling Prophecy to what they say in Operation I.N.T.E.R.V.I.E.W.S. The ending could also take place on Nigel's birthday with the gang getting back together much like Amphibia and the whole KND series could be archived transmissions viewed by their children and such similar to Regular Show.

Numbuh Aleph 0 isn't just the GKND Soopreme Leader but also a God-Emperor and/or Galactic Conqueror.
They'll force the GKND to feed cover stories saying the "adultified" planets destroyed themselves. Unfortunately the truth’s going to find itself out one way or another; once Aleph Zero’s booted out much of the universe will appoint Numbuh 1 as the new Emperor but he’s allowed to make Earth his home base and can live life the way he wants to while in power.

But once he’s is in charge he'll be gaining the support of every heroic organization and militia in the universe. Not even Bugs Bunny or Mandy would be able to amount to the power gained from this and even if Aleph 0 had Earth's regular and 2x4 technology to their advantage it still wouldn't be enough.

Numbuh Aleph 0 will be voiced by Richard Steven Horvitz.
While the pilot didn't have him voice any characters it would be fitting to continue the trend of him voicing Large Ham space creatures and the third time at that following Zim and Pox. Bonus if other Invader Zim cast members join the fun like Wally Wingert or Melissa Fahn.

Numbuh Aleph 0 is going to hit a Rage Breaking Point.
Aleph 0 will eventually learn directly or indirectly that there’s more rogue GKND operatives than Lizzie and it's going to make them throw a huge fit with an extreme Motive Rant. The other GKND operatives (excluding those already against Aleph 0) will realize they wiped out everything and everyone they knew for the psychotic cause of a deplorable maniac and decide to help Earth defeat them and end The Conspiracy once and for all.

There will be an hour-long special regarding the origins of the main characters.
It will go through how they met, how Nigel lost his hair, the delightfulization of Sector Z and how Numbuh 1 built up his reputation as one of the greatest Earth KND operatives among others. At one point Chad in a flashback when Numbuh 1 succeeds at a major mission will say they're "gonna start something that will shatter reality" and Numbuh 1 will remind Chad of the quote while stating he believes they did, especially now that Numbuh Aleph 0 is on Earth with access to more technology they could use to their advantage. Cue an Oppenheimer-esque Nightmare Sequence regarding Numbuh Aleph 0 destroying the world and/or universe with said technology be it hijacking the in-universe nuclear arsenal (if there is one), creating The Singularity, releasing or becoming an Eldritch Abomination or dropping the Moonbase on Earth (again) among others. All while Nigel is slowly getting more and more worried and ashamed at being the burden of responsibility for this horrible fate before shutting his eyes. End Transmission.
  • What makes the second Moonbase drop special is that nobody has the Nigh-Invulnerability from when they were citizombified and the impact could be amplified further if the Book of KND is destroyed. What was a gust of wind back then could now be equivalent to the asteroid that wiped out the dinosaurs.

GKND will have licensed music.
Kinda like Regular Show.
  • I’m sure we’d love to hear them play a certain song by Simple Plan. Those of you who’ve heard it know the one.

There’ll be a musical episode.
No, not Operation L.O.V.E. This musical will have the characters cover songs. Would be nice to have Numbuh 1 singing Linkin Park.

Additionally the success of the musical episode could result in the Kids Next Door having original music videos and albums.
Maybe even live hologram concerts like what the Squid Sisters do.

The KND will have livestreams on the official Adult Swim YouTube channel.
They'll probably consist of the cast playing games and reacting to videos as their respective characters. Fans can interact with them also.

Several characters from other series will make a few cameo appearances.
Would be hilarious to see Master Shake getting shot at by Numbuh Aleph Zero or something, especially when Status Quo Is God in his show.

There’s a permanent detention at Hendrie Middle School AND McClintock High School too!
Just goes to show that the teens are really no different from the kids.

Numbuh 48 Flavors is a Splinter Cell operative.

Numbuh 13 is a Splinter Cell operative.
Does that mean he’s faking bad luck?

Numbuh 13 or somebody accused Numbuh 65.3 as a Splinter Cell operative in Operation G.I.R.L.F.R.I.E.N.D.
Probably to throw off Numbuh 1 so he doesn't suspect there's something more than his computer going sentient.

GKND will have Shout-Outs to other media.
Particularly ones currently owned by Warner Bros.. There could be several story elements borrowed from them, though not a lot or the show suffers from They Copied It, So It Sucks!.

Nigel will somehow gain the ability to know what others say next.
And his friends understand him so much they know what HE'S going to say next.

Cree became evil for different reasons.
Unlike Chad who was a Glory Hound and actually an Anti-Hero with responsibilities Cree really had no regards for anyone else and there were signs of her already becoming a traitor while in the KND. One guess is that she felt abandoned after Numbuh 5’s birth and got tired of being sidelined in favor of her sister so she dropped the "kid gloves" and went primal even before turning 13. That might've somewhat slightly changed around Operation S.P.A.C.E. after Numbuh 3’s sister Mushi convinced her to stop fighting her own responsibilities (being a sister) and instead realize she still has family who cares for her as much as they did with Numbuh 5.

Chad is a GKND operative.
It would explain why he's a Glory Hound. He pretty much took a harsh mental beating with the death of his race. He doesn't want Nigel going down that dark path either and obviously he's locked up not just for being a teenager but because he knew too much about the GKND.
  • I thought they were looking for a KND operative from Earth.
  • He did try to reveal the GKND's existence to Nigel early. That essentially charges Chad with leaking information.
    • Possible. Chad did do that teleportation trick when leaving with Numbuh Infinity in Operation T.R.E.A.T.Y. Then again the only other reason he’d be captured is for attempting to stop the GKND... after learning too much about them.

Most if not all GKND operatives are the Sole Survivors of their species.
What else could you be after destroying your own race and planet? Lizzie and the others might be attempting to revive their respective species through having lives on Earth but if they die before starting families their races will truly go kaput. This is extremely worrying, especially when Numbuh Aleph Zero threatens to kill their fellow operatives for not cooperating.

The adult tyrants took over Warner Bros. and eventually the rest of Hollywood itself, as well as other businesses.
How else can you explain the sudden downward spiral in creativity and quality?
  • Alternatively people like David Zaslav and Bob Chapek are Real Life adult tyrants and practically invincible without an actual Kids Next Door to fight back.

The Splinter Cell operatives will attend school with the protagonists in human forms.
And not just to obtain information about them.

The Splinter Cell will have access to KND bases.
Much like how Father got access through Tommy's boogers they’ll obtain it through a MacGuffin the protagonists have like Numbuh One’s boogers and/or blood.

Father will be decommissioned. Multiple times.
The first time is when he's defeated in presidency. The other times are because...

Father will pull a Heel–Face Turn himself.
Past failures combined with the knowledge of there being people far worse is going to make him question how powerful he really is. Plus the boredom from the one victory he does have over the KND and subsequent distrust from his brother who cared for him ultimately makes him realize there was really no warrant to the destruction he caused.

GKND will have swear words.
Albeit not a lot.
  • Possibly confirmed in the teaser; when Numbuh Vine accidentally reveals her human form of Lizzie, Numbuh 3 says "Holy ***!" Perhaps it’s one of the reasons CN rejected the first pitch.

GKND will have blood.
Albeit again, not a lot.
  • Plus the blood could be differently-colored for the alien characters.

Father and Numbuh Aleph Zero will have a Villain Team-Up.
After Aleph Zero’s defeat Father is unintentionally going to free them from the Arctic Base during presidency. Aleph Zero returns the favor by obtaining a Recommissioning Module (the KND makes backups in case one of them self-destructs like the one Monty made) and recommissioning Father after he's defeated. Although Father is tired and sick of failure Aleph Zero strikes a deal with him that they cooperate on fighting the KND on the condition that AZ puts aside their destructive tendencies. Father will reluctantly agree though they will eventually have to betray each other at some point. And they inevitably do.

Father and Numbuh Aleph 0 will fight each other.
We're all thinking it: The greatest adult tyrant of his time against an intergalactic brat from beyond the stars. Their clash is going to be devastating, especially when both combatants go One-Winged Angel on each other.

There will be a Civil War episode.
While many see Numbuh 1 as a hero there’ll still be operatives who refuse to forgive him for the invasion regardless. Some will be fighting lingering adult tyranny in their own factions while others remain in the KND; differing opinions will drive a massive wedge between them. Some of the pro-Numbuh 1 operatives will end up being reluctantly put on the opposing side to balance things out and the conflict ends when an operative gains the evidence to Clear Their Name and the two sides settle their differences.

Character Development will be a major point in GKND.
We've already mentioned the adults realizing Being Evil Sucks and the teens realizing their Undying Loyalty to Father was All for Nothing but the entire KND will come to learn they don't have to be like the villains upon getting older so long as they can overcome traumas and maintain their youthful natures.

There’ll still be GKND operatives loyal to the ideals of Numbuh Aleph Zero and the Splinter Cell.
In a case of Surprisingly Realistic Outcome not all of them follow Lizzie’s example, instead choosing Patriotic Fervor and creating The Remnant. This forces the Badass, Technical and Martial Pacifist KND operatives to go up against and neutralize them.

The AND and TND will have to reveal themselves.
And the collaborations against Numbuh Aleph Zero and later President Father will get the KND to realize that not all adults and teens are bad, getting the three teams to merge operations.

The other Splinter Cell operatives have Voluntary Shapeshifting.
Some GKND operatives employ disguises on Earth but it’s still a possibility.

Numbuh Aleph Zero and Father collaborated before.
Father couldn't have made the Battle Ready Armors and Really Really Incredibly Destructive Machine by himself and though the Delightful Children maybe had a hand they couldn't have found a giant chainsaw and fly swatter unless they made a growth machine first or at least gained access to one or blueprints for them. Guess who has THAT kind of technology? Plus the R.R.I.D.M. looks kinda like a UFO, so...
  • Unlikely. Father doesn't know about the GKND let alone Aleph 0.

There’ll be new adult villains.

Numbuh 1 will get a Disney Death.
In order to stop Numbuh Aleph 0 or Father he'll have to use an ultra-powerful move that could kill him upon use, a risk he'll have to take for the greater good of humanity. He lives and uses his new lease on life to be a better person.

Lizzie will get a Disney Death.
While it can be used to further shatter Numbuh 1 she's a plant. She can grow out through the ground while absorbing water and light.

Chad will get a Disney Death.

GKND will spawn a videogame AND soundtracks.

GKND will have three seasons.
Considering how studios tend to order at least three. The first season revolves around exploring the mystery of the GKND and leads up to the battle with Numbuh Aleph Zero. The other two seasons will have their own arcs with side-stories such as Father's presidency, though that could happen in the Season 1 finale.

Alternatively the first season of GKND will be a movie.
And if the movie is successful enough it’ll spawn the first season, and if that is successful it'll spawn the other two seasons and game. The soundtracks may still arrive anyway.
  • Unlikely. Mr. Warburton hasn’t stated GKND will be a movie and he’s still attempting to pitch it as a series. A movie could be down the line when the show is well into its run.

Numbuh Aleph Zero IS Invictus' first child.
They do have the same interest in destruction and are extremely sociopathic in nature. Perhaps Invictus gave birth to Aleph Zero before he was sealed, then told them to continue his work after he's gone.

Numbuh Aleph 0 has Psychic Powers.
They can read minds, predict and foresee the future and use hypnosis. Aleph Zero probably foresaw Numbuh 1 coming and indoctrinated him to get him off the trail. Unfortunately they didn't expect his True Companions coming to look for him so the exposure of the GKND's true nature and failure of their entire plan could've been prevented if they just didn't bother messing with the Earth KND in the first place.

Numbuh Nominal is the child of another major Cartoon Network villain like Black Hat or HIM.
Probably so that when compared with Numbuh Aleph 0 they both have something in common (being descended from a Big Bad Eldritch Abomination).

There’ll be a fight sequence based on the Final Battle of Sonic Adventure.
With a hint or two of the Third Impact. And Everybody Lives afterwards.

Numbuh Aleph 0 will suffer a Disney Villain Death in the GKND Grand Finale.
Perhaps they'll explode. Or get decommissioned. Or something else. Whether or not this applies to the other Splinter Cell operatives remains a mystery.

There’ll be more romantic moments between both the main ships and the secondary ones.

Nigel gets some kind of new armor or suit.
If the new villains in the KND’s Rogues Gallery are more powerful he's gonna need some new tech even without having to use his Super Mode all the time.

The protagonists will wear different outfits (at least two every episode).

Numbuh Two will build an Evangelion-esque Humongous Mecha.

Nothing will be the same anymore for the KND and everyone else.
For starters the primary bases will need upgraded designs after Father's firebombings but the events of both his presidency and the GKND invasion are definitely going to put mental strains on everyone. Not to mention everyone on Earth knows about the child-teen-adult conflict now even if others are somehow still Secret Keepers. They'll have to work together and help each other if they hope to survive without Jumping Off the Slippery Slope (or in some cases entering the Heel–Face Revolving Door).

The Book of KND is an Artifact of Hope and/or Artifact of Power.
Think about it. Nobody knows where it came from, only that it has vast knowledge and power beyond understanding. Not only is it a Hope Bringer, it also gives people Super-Strength, Nigh-Invulnerability and other strange yet special abilities.
  • I guess this means the Book is an equivalent to the Allspark or something.

Aunt T's Book of Recipes is an Artifact of Doom.
Probably an Evil Counterpart to the Book of KND as it appears villains can survive life-threatening experiences as well.

Unlike Father and Grandfather, Numbuh 1 can transform whenever he wants.
He doesn't need a MacGuffin or some kind of trauma. He just needs to concentrate.

Numbuh 1 will get another pair of shades or make a new visor.
Probably to make himself feel young again after the mess with the invasion and everything.

Grandfather is evil because his wife was supposedly killed in a war.
She actually got the Inheritance, rendering her invincible but he doesn't know that. It's gonna take her direct presence to calm him down.

Numbuh 1 will share his sector's treehouse with Sector Z, making them merge teams.
Considering they've been baseless since delightfulization he’ll take pity on them and welcome them into his treehouse, accepting them as his cousins.

Probably because he's realizing he needs her as much as the rest of his teammates, plus to fill in the gap as a second-in-command while Abby is the Supreme Leader, though Numbuh 5 will still hang out in the treehouse and go on missions with him because True Companions don't leave each other behind.

There are TWO definitions of decommissioning and recommissioning.
The first one which we're commonly associated with is the forced loss of memories. The second one, used in terms like "Planetary Decom" seems to be a kind of slang term for death. Not only does this make sense because of the difference in morals between the Earth and galactic branches but they can be used hand-in-hand if Numbuh Aleph 0 attempts to cover up the existences of planets they've destroyed.

All characters survive throughout the new series.
Whoever apparently dies will go through Disney Deaths instead.

The victories over Father and Numbuh Aleph Zero will attract alien adult tyrants, adding them to the Rogues Gallery.
Even if Numbuh 1 isn't the new intergalactic leader his feats will be heard across the entire universe. That'll definitely garner the attention of alien adults who see Earth as a new playground for them to conquer.

While Numbuh 0 is The Chosen One against Grandfather, Numbuh 1 is such against Father.
It pretty much serves as Book Ends to the Earth KND’s history as the close younger relative of an Evil Overlord takes them down and saves everyone.

Everyone in the universe will help the protagonists in the final battle.
While a good majority of the characters have been helping out in every major battle of the series, Nigel will have to enlist the help of the entire universe in the final battle against the Splinter Cell. Even Grim will join the action.

Grim will make a cameo appearance at some point in GKND.
Probably acting as a Magical Guide to Numbuh 1 since he helped him out. Bonus if he does so again in the video game.

There will be some dream and nightmare episodes.
One of the nightmares will have Numbuh 1 put on trial through a Joker Jury consisting of his Rogues Gallery both old and new.

Another nightmare will have Numbuh 362 surrounded by Senior Citizombies only to wind up seeing herself as one as well. Bonus if other CN/AS characters show up as Citizombies too.

Other dream/nightmare sequences could also be present, including Numbuh 3 in a palace of Rainbow Monkeys and Numbuh 4 in a Resident Evil parody.

At one point the protagonists learn Your Mind Makes It Real and turn the tables, going full-blown No Fourth Wall on the nightmares.

There’ll be a Time Travel Episode.
Much like what happened in The Powerpuff Girls (1998), Father uses a Time Machine to kill his brother as a child and ensure the Earth KND’s Seventh Age never begins. This has setbacks for both him and the KND operatives trying to stop him as Grandfather was active around that time and Young!Numbuh 0 hasn’t gained enough courage to rebel. The duel between the KND and Father will inspire him to rise against adult tyranny, setting up a Stable Time Loop and Self-Fulfilling Prophecy, both of which wouldn't have happened if Father never bothered intervening to begin with.

GKND will have multiple Darkest Hours.
The original series had several throughout its run:
  • Operation G.R.O.W.U.P. had Numbuh 1 being subjected to Rapid Aging and the Sector V treehouse destroyed.
  • Operation E.N.D. had Sector V being virtually decommissioned and Chad about to send the Moonbase into the sun while also holding Tommy hostage.
  • Operation G.R.A.D.U.A.T.E.S. had most of the KND being animalized while Tommy, having lost his brother to the ray goes into a Despair Event Horizon.
  • Operation Z.E.R.O. had the entire world and Moonbase besides Numbuh 1 being Citizombified while Numbuh 1 himself falls into a Despair Event Horizon and is still unable to find Numbuh 0.

It only makes sense GKND continues along that route - The second is Father's presidency while the first is Numbuh 1 having a My God, What Have I Done? moment, the kids, teenagers and adults being pinned down even with the good GKND operatives and Sector Z fighting alongside them and Numbuh Aleph 0's weapon charging up to destroy Earth. Of course this is where Toiletnator has his Big Damn Heroes moment and disables the weapon.

The T.R.E.E.H.E.M.O.T.H. from Operation: V.I.D.E.O.G.A.M.E. will make an appearance or two in GKND.
And with the upgraded Moonbase first introduced in Operation Z.E.R.O. there's going to be changes applied to it.
  • They could also use their Humongous Mechas as parts for the T.R.E.E.H.E.M.O.T.H. It was already presented as a Fusion Dance so using the KND's vehicles would make as much sense as using parts from the Moonbase.

The GKND's weapons are souped-up versions of the Earth KND weapons.
Something tells me the blaster from this image is the GKND's version of the S.C.A.M.P.P. which is powerful enough in of itself, though the designs may change during production.

Numbuh 1 will be a One-Man Spotlight-Stealing Squad.
He's already got more screentime in the teaser though other characters seem to maintain their share of focus.

All characters have Hammerspace.
Particularly with big weapons like the S.C.A.M.P.P.

The KND will have to engage multiple giant monsters.
Whether they be created by Numbuh Aleph 0 or otherwise.

GKND will have several Battle in the Rain moments.

She'll join those already on the bench of the TND like Numbuh 362. Bonus if she winds up Passing the Torch to one of her brothers as Head of Decommissioning.

Numbuh 1 is already 13 when he authorizes the invasion but Numbuh Aleph 0 doesn't want to decommission him.
Not only is he (supposedly) immune to the side-effects of adulthood but he’s a vital part of their plan and if he’s decommissioned he wouldn't know about the GKND.

GKND will feature more moments in the city.
Probably as a mix between world-building and Scenery Porn, plus we don't get to see much of the city in the original show so why not?

If GKND ever gets made the main alien allies the KND picks up will be heroic adults and/or teens.
Think about it. The top brass of the GKND is adamant that all adults and teens need to be wiped out regardless of alignment. Thus having a gang of heroic adults and teens being allies to the heroes could be an interesting contrast. Maybe one of them could even be a Good Counterpart to someone like Cree, the Steve or Father.
  • Perhaps Lizzie, Numbuh 74.239 and Numbuh Infinity are adults disguised as kids. It would explain the deeper voices of their alien forms.
    • Remember that they’re only children by their own standards and not Earth's. This might also provide an explanation for their voices.

GKND will have either an Earn Your Happy Ending or a Bittersweet Ending leaning more on the sweet side.

Numbuh Aleph 0's final form will be The Darkness.
Perhaps they'll succeed in achieving it and assimilate the KND into themselves before learning of other universes to feast on. Unless they get defeated before they reach that phase and Learning with Pibby takes place in an alternate reality where they weren't defeated.
  • Or the Darkness could be a reincarnation of them and their final form could be something different.

GKND will have a Logo Joke based on the original show's logo.
While the first show had the five characters in an Angels Pose the new logo will focus on Numbuh 1, still doing his pose but leaning more towards something akin to the Bat-symbol, probably alluding to him being a Spotlight-Stealing Squad.

The logo will also get destroyed or transformed in trailers and posters in some form or another much like what happens in The Dark Knight Trilogy and Avengers: Endgame.

GKND will keep (most of) the original cast and crew.
If The Powerpuff Girls (2016) and Ben 10 (2016) taught us anything it's that Only the Creator Does It Right.
  • The teaser seems to confirm this with several cast members reprising their roles and Guy Moore being involved in production.

If the show has deleted scenes and/or intros they'll be added as bonus features for digital releases, then placed on official social media.
Probably to renew the tradition of surprising people with putting deleted scenes on home media. Not a lot of recent home media releases do that so it’d be a return to form.

Operation T.R.E.E.S. will be reworked.
Probably so it won't have as many ties to its inspiration The Lorax, which got it scrapped in the first place.

GKND will be completely CGI.
While they did something like that for Numbuh One's segment in Operation R.E.P.O.R.T. there’s a chance the producers will end up making the final product drastically different from the original formula. It's better to not take the CGI risks and stay 2D with CGI props and backgrounds. Video games don’t count as they make that transition pretty good.
  • I think this’ll be jossed. The animatic was close to the show's art style even though it hasn't gotten to the final stage.
    • Further jossed by the fact that a company named Rat Animation released an animated version of the pilot which closely follows the original show's animation style on their channel and they wished to animate the show if it gets greenlit. Unfortunately their channel’s been deleted since so it's unlikely they're still active even though the video’s been reuploaded.

GKND will get a major redesign.
Nope. The last time they did something like that it sucked. The designs need to be as close to the original as possible.
  • And it's jossed. The teasers have designs accurate to the original.

GKND will be co-produced by Stampede Ventures.
Mo Willems and Mr. Warburton went there to make Naked Mole Rat Gets Dressed: The Rock Special. This would not only serve as another collaboration between the duo but Stampede is shaping itself up to becoming a Spiritual Successor to Curious Pictures.
  • Cartoon Network may or may not be in direct involvement with the show's production much like what happened with the original show's pilot.

Steve Rucker will compose an original score for GKND but he'll also reuse music from the original show.

GKND will neither be a show nor movie but a graphic novel instead.
They could go down the same route as Danny Phantom or Final Space and make a cheap, safe graphic novel that continues the story with a decreased or absent risk of abrupt ending or cancellation.

Plus this would serve as Mr. Warburton's first graphic novel and second book since "1000 Times No". It demonstrates his expansion into other forms of media besides animation.

  • Mr. Warburton has neither confirmed or denied that it was going to be a graphic novel and is apparently still attempting to pitch it as a show so the novel is a fail-safe backup plan. We'll just have to wait and see.

One of the goals of the GKND, possibly even their ultimate goal is…
… To discover or develop a form of immortality that allows children to stay children forever. After all, even if they wiped out every adult in the universe those children whose rights they're so adamant about defending are going to grow into adults themselves someday. Their plan is to exterminate all teenagers and adults, then spread the "miracle cure" to all children of the universe. Unfortunately, people treated with the cure can still die from outside forces so it really doesn't make them all that immortal.

One or more of the GKND operatives could already be immortal or have the “cure” through experiments. While it could be beneficial people like Father can use it to their advantage against the Earth KND because if they test it on Numbuh 1 and nobody else he'll spend eternity being alone and further going insane while his friends and family grow up and without their best operatives the KND will fall.

Marvin the Martian is in the GKND.
Probably because he knows they'll likely blow up the Earth and he'll want to join in on the fun. Bonus if they shoot him in the face later.

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