History Recap / CodenameKidsNextDoorSpecialTheGrimAdventuresOfTheKND

** Numbuh 1's Billy disguise consists of his clothes and a tomato for a nose. The only ones not fooled by it are Mandy and Sector V, and the latter only because they were in on it. It even fools ''[[OnlySaneMan Grim]]'' and [[FatIdiot Harold]].

* TheLastOfTheseIsNotLikeTheOthers: The protagonists make their claim for what they're after in the FinalBattle.
-->'''Grim''': I've come for me scythe!
-->'''Numbuh 1''': And I've come to rescue the Kids Next Door!
-->'''Billy''': And I've come for the "All-You-Can-Eat" Pancake Breakfast!

* TheAssimilator: The Delightful Reaper assimilates anyone it slashes with Grim's scythe. The only one to still have something of a distinct personality is Billy (thanks to his stupidity) -- until it assimilates Mandy, whereupon she becomes the dominant mind.

* NoodleImplements: According to Numbuh 1, the KND are aware of the supernatural activity that plagues Endsville and have tried to [[SupermanStaysOutOfGotham avoid going there as much as possible]].

* TookALevelInDumbass: The entirety of Kids Next Door, with the exception of Numbuhs 1, 2 (he wasn't around during the time), and 5, become much more idiotic in this cartoon in order to facilitate Mandy's takeover of the organization. Special mention goes to Numbuh 362, who in her home series is one of the most intelligent and understanding characters of the entire show, yet is among those who are duped by Mandy's ridiculous disguise as Numbuh 1, not realizing her mistake until after Mandy usurps her and throws her in the Moonbase prison.

* TookALevelInDumbass: The entirety of Kids Next Door, with the exception of Numbuhs 1 and 5, become much more idiotic in this cartoon in order to facilitate Mandy's takeover of the organization. Special mention goes to Numbuh 362, who in her home series is one of the most intelligent and understanding characters of the entire show, yet is among those who are duped by Mandy's ridiculous disguise as Numbuh 1, not realizing her mistake until after Mandy usurps her and throws her in the Moonbase prison.

* NoodleImplements: According to Numbuh 1, the KND are aware of the supernatural activity that plagues Endsville and have tried to avoid going there as much as possible.

* BigDamnHeroes: Just when Mandy combines with the Delightful Reaper, Harold arrives to retrieve his [[BerserkButton lucky pants,]] decked out in wrestling gear.

* ChekhovsGun: The Barnacle Bone that Grim tries to torture Numbuh 1 with becomes instrumental in fighting the Delightful Reaper in the climax, as it's used to merge the two heroes into a gigantic skeleton armour.

* ShoutOut: This being a crossover event, multiple references to Creator/CartoonNetwork cartoons can be found throughout the episode.
** Billy initially calls WesternAnimation/EdEddNEddy to help with his pants problem.
** He later expresses disappointment that Sector V aren't WesternAnimation/ThePowerpuffGirls.
** Fred Fredburger admits that he loves shows about [[WesternAnimation/MyGymPartnersAMonkey monkeys]], [[WesternAnimation/CampLazlo monkeys that go to camp]], and shows about [[WesternAnimation/FostersHomeForImaginaryFriends imaginary friends]].
** The CreativeClosingCredits feature artwork of crossovers between different Creator/CartoonNetwork shows. This included [[WesternAnimation/EdEddNEddy Ed, Edd, n]] [[WesternAnimation/TheGrimAdventuresOfBillyAndMandy Mandy]], [[WesternAnimation/EvilConCarne Evil]] ''[[WesternAnimation/CampLazlo Camp]]'' [[WesternAnimation/EvilConCarne Carne]], [[WesternAnimation/ClassOf3000 Class of]] [[WesternAnimation/CodenameKidsNextDoor Numbuh 3000]], [[WesternAnimation/MyGymPartnersAMonkey My Gym Partner's A]] [[WesternAnimation/DextersLaboratory Mandark]], and [[WesternAnimation/SamuraiJack Samurai]] [[WesternAnimation/FostersHomeForImaginaryFriends Mac]].

* KarmaHoudini: Mandy gets away scot-free despite taking over the KND as well as fusing with the Delightful Reaper for the sake of world domination.

After getting stuck in his dad's lucky pants, [[WesternAnimation/TheGrimAdventuresOfBillyAndMandy Billy]] calls on the Kids Next Door to help him but gets caught up on a mission with disastrously "delightful" results. Meanwhile, Mandy decides to try her hand at world domination by taking over the Kids Next Door.

* TheAssimilator: The Delightful Reaper, who assimilates anyone it slashes with Grim's scythe. The only one to still have something of a distinct personality is Billy (thanks to his stupidity) -- until it assimilates Mandy, whereupon she becomes the dominant mind.

* BigDamnHeroes: Just when Mandy combines with the Delightful Reaper, Harold arrives just in time to retrieve his [[BerserkButton lucky pants,]] decked out in wrestling gear.
* BodyHorror: The Delightful Children and Billy undergo this when the Delightful Reaper is formed.
* BreakingTheFourthWall: Grim does this at the end of the episode.

* CallingYourAttacks: Grim and Numbuh 1 do this while operating their {{kaiju}}.

* ChekhovsGun: The Barnacle Bone that Grim tries to torture Numbuh 1 with becomes instrumental in fighting the Delightful Reaper in the climax.

* DarkActionGirl: Mandy.
* EldritchAbomination: The Delightful Reaper.
* EvilCannotComprehendGood: Mandy is extremely annoyed and baffled at the fact that, in spite of all their powerful weapons and massive numbers, they choose to fight for the rights of children rather then TakeOverTheWorld. So she decides to do it herself.

** {{Invoked}}. Because Mandy didn't give her enough time, Numbuh 3 had to give the '''M.A.N.D.R.O.B.O.T.''' the rushed acronym of '''Monkeys And Nice Doggies Relax On Bellies Of Turtles'''.

** Using the Barnacle Bone, Grim and Numbuh 1 create a giant Skeleton Samurai {{kaiju}} with Grim as the shield and Numbuh 1 in the head.

* HijackedByGanon: The Delightful Reaper ultimately proves to be more dangerous than Mandy. So Mandy has it assimilate her so she can use it for her own purposes.
* IdiotBall: Everyone sans Mandy and Numbuhs 1 and 5, thanks to RuleOfFunny.

* JustThinkOfThePotential: Mandy points out that with the technology at their disposal, the KND could ''easily'' take over the world. Instead, however, they use it to fight for kids' rights. She's understandably vexed, and uses it to justify her takeover to Grim and Numbuh 1.

* OhCrap: Numbuh 1 and Grim have this reaction when they see the moonbase under new management.
* OnlySaneMan: Numbuhs 1 and 5, being the only ones to act with any measure of rationality.

** Numbuh 1's Billy disguise. The only ones not fooled by it are Mandy and Sector V, and the latter only because they were in on it. It even fools ''[[OnlySaneMan Grim]]'' and [[FatIdiot Harold]].
** Mandy's Numbuh 1 disguise is even worse -- it fools everyone except Numbuh 5, even Numbuhs 3 and 4, who were there when Numbuh 1 disguised himself as Billy.
** Billy's Numbuh 1 disguise. Unlike the above two, no one is fooled.
* PottyEmergency: Billy runs to the Delightfulization Chamber mistaking it for a port-o-potty which kickstarts the genesis of the Delightful Reaper.
* RuleOfFunny: What the episode runs on.

* SomethingOnlyTheyWouldSay: Numbuh 1 decides to stay and help Grim when the Reaper claims that the children who fused with his scythe are evil and strangely ''delightful''.

* SuddenlyShouting: Eddy, naturally:

* TookALevelInDumbass: Everyone but Mandy and Numbuhs 1 and 5 suffered this significantly in the crossover (though Grim didn't suffer this as much as the other characters). Special mention goes to Numbuh 362, who in her home series is one of the most intelligent and understanding characters of the entire show, yet is among those who are duped by Mandy's disguise as Numbuh 1, not realizing her mistake until after Mandy usurps her and throws her in the Moonbase prison.

* TheWorfEffect: WesternAnimation/ThePowerpuffGirls (who are {{Invincible Hero}}ines in their own show) are [[TheCameo briefly seen]] exploding from the Delightful Reaper once it's defeated, implying it assimilated them offscreen.

* TheWorfEffect: {{Invincible Hero}}ines WesternAnimation/ThePowerpuffGirls are [[TheCameo briefly seen]] exploding from the Delightful Reaper once it's defeated, implying it assimilated them offscreen.

* TookALevelInDumbass: Everyone but Mandy, Numbuh 1 and 5 suffered this significantly in the crossover (though Grim didn't suffer this as much as the other characters). Special mention goes to Numbuh 362, who in her home series is one of the most intelligent and understanding characters of the entire show, yet is among those who are duped by Mandy's disguise as Numbuh 1, not realizing her mistake until after Mandy usurps her and throws her in the Moonbase prison.

* TookALevelInDumbass: Everyone but Mandy, Numbuh 1 and 5 suffered this significantly in the crossover (though Grim didn't suffer this as much as the other characters).