History WesternAnimation / BillyAndMandysBigBoogeyAdventure

'''Billy:''' Grim, you still saved the day, even without your powers. Mandy still always gets her way… Irwin got to kiss his true love… [[TheLastOfTheseIsNotLikeTheOthers and I’m gonna get a new bike for Christmas!]] And we all did it ''without'' Horror’s Hand! And we did it ''together''.

* BravadoSong: As he was forced to WalkThePlank, Billy sings "I'm Not Scared Nor Very Oh" which mentions he's not scared of everything. It turns out to be as a distraction to the pirates as he and his friends make their escape.

** The future versions of herself and Irwin in Mandy's nightmare resemble [[Manga/BakiTheGrappler Biscuit Oliva and his wife, Maria]], fown to the iconic BridalCarry.

* BrutalHonesty: During the court scene, when Boogey questions Billy and Mandy if they use Grim for their own benefit and would gladly throw him to the wolves if he was powerless, they shamelessly agree with him, causing Grim to scowl.

* NoodleIncident: Several of the people stated by Boogey to have stolen Grim's scythe (including the army, a girl scout troop, the President of the United States, a mailman, a pair of trapeze artist sisters, the Sleestaks from ''Series/LandOfTheLost'', Boogey himself, a llama, and a turkey salad sandwich[[note]]hold the mayo[[/note]]) were not shown stealing it in the series, leading one to speculate what may have happened during these incidents.

* WhereAreTheyNowEpilogue: There’s one during the end credits. [[spoiler:Grim returns to fighting supernatural toilet clogs, Mandy takes over as Captain of the Boogey Bay, Billy becomes President of the United States, [[BeCarefulWhatYouWishFor Irwin falls ill due to catching mono and cooties from kissing Mandy]], Skarr uses the hole in his torso as a bird feeder, [[CutLexLuthorACheck Creeper makes a fortune off selling time travel pants]], Billybot and Mandroid transform into spaceships and [[TheyFightCrime embark on a career as crimefighters]], Hoss Delgado does not appear in the movie and is left watching the events on TV, [[LethalChef the cyclops guardians get their own cooking show]], the Kraken was arrested for 8-armed robbery, [[StartMyOwn Numbuh 3 attempts to start her own reaping business (with less than stellar results)]], Horror becomes a rock god using his ability to play guitar with his teeth, Boogey becomes a shut-in after becoming afraid of everything, and Grim's scythe is quickly stolen again (this time by Dracula who uses it as a golf club). As for Future Billy, he returns to his timeline to find that the future didn't change because Fred Fedburger became the new Lord of Horror, though he would rather have nachos instead.]]

* NoodleIncident: Several of the people stated by Boogey to have stolen Grim's scythe (including a girl scout troop, a pair of trapeze artist sisters, the Sleestaks from ''Series/LandOfTheLost'', and a turkey salad sandwich[[note]]hold the mayo[[/note]]) were not shown stealing it in the series, leading one to speculate what may have happened during these incidents.

** The Boogeyman goes into a pipe, complete with the Warp Pipe sound from ''Franchise/SuperMarioBros''
** Future Billy's arrival and cadence, along with present Billy's explanation of why he's naked are a reference to [[Film/TheTerminator Kyle Reese.]]

[[caption-width-right:350:''[[Music/{{Voltaire}} “I’m Overlord of the Underworld, ‘cause I hold Horror’s Hand!”]]'']]

* WhereAreTheyNowEpilogue: There’s one during the end credits. [[spoiler:Grim returns to fighting supernatural toilet clogs, Mandy takes over as Captain of the Boogey Bay, Billy becomes President of the United States, [[BeCarefulWhatYouWishFor Irwin falls ill due to catching mono and cooties from kissing Mandy]], Skarr uses the hole in his torso as a bird feeder, [[CutLexLuthorACheck Creeper makes a fortune off selling time travel pants]], Billybot and Mandroid transform into spaceships and [[TheyFightCrime embark on a career as crimefighters]], Hoss Delgado does not appear in the movie and is left watching the events on TV, [[LethalChef the cyclops guardians get their own cooking show]], the Kraken was arrested for 8-armed robbery, [[StartMyOwn Numbuh 3 attempts to start her own reaping business (with less than stellar results)]], Horror becomes a rock god using his ability to play guitar with his teeth, Boogey becomes a shut-in after becoming afraid of everything, and Grim's scythe is quickly stolen again (this time by Dracula who uses it as a golf club).]]

* CryCute: While she doesn't outright cry, Mandy gets teary-eyed at the possibility that Billy [[spoiler:might actually have been killed by a Kraken.]] Of course, she goes right back to normal once Billy shows up alive and well.

* FutureMeScaresMe: Mandy’s worst fear is seeing her adult self being the personification of TastesLikeDiabetes and HappilyMarried to ''[[AbhorrentAdmirer Irwin]]''.

* WhatCouldHaveBeen: According to Maxwell Atoms, Creator/SethMacFarlane was initially supposed to share the role of the 2 Headed Parrot with his sister, Creator/RachaelMacFarlane. But Seth's film, Ted, got the greenlight which led to his unavailability. As a result, Rachel voiced both of the heads.
** Also according to Atoms, Grim was supposed to be replaced by an entirely new Grim Reaper character, with the hopes of casting a known celebrity. Atoms initially had Creator/PamelaAnderson in mind for the role, but the executives rejected it wanting a more big-named celebrity. After making a list of potential candidates (Music/MarilynManson, Creator/DrewBarrymore, Creator/ElijahWood, etc.), the executives brung their one list of celebrities that were practically unavailable or had high rates (one of the candidates was Creator/AngelinaJolie). Due to lack of time, Atoms settled on Numbuh 3 instead.

* WhatCouldHaveBeen: According to Maxwell Atoms, Creator/SethMacFarlane was initially supposed to share the role of the 2 Headed Parrot with his sister, Creator/RachaelMacFarlane. But Seth's film, Ted, got the greenlight which led to his unavailability. As a result, Rachel voiced both of the heads.

* HumiliationConga: Boogey winds up on the receiving end of arguably the Mother of all these. [[spoiler:It winds up traumatizing him so badly that according to the WhereAreTheyNowEpilogue, he becomes a shut-in that lives in fear for the rest of his days.]]

* WhereAreTheyNowEpilogue: There’s one during the end credits. [[spoiler:Grim returns to fighting supernatural toilet clogs, Mandy takes over as Captain of the Boogey Bay, Billy becomes President of the United States, [[BeCarefulWhatYouWishFor Irwin falls ill due to catching mono and cooties from kissing Mandy]], Skarr uses the hole in his torso as a bird feeder, [[CutLexLuthorACheck Creeper makes a fortune off selling time travel pants]], Billybot and Mandroid transform into spaceships and [[TheyFightCrime embark on a career as crimefighters]], Hoss Delgado does not appear in the movie and is left watching the events on TV, [[LethalChef the cyclops guardians get their own cooking show]], the Kraken was arrested for 8-armed robbery, [[StartMyOwn Numbuh 3 attempts to start her own reaping business (with less than stellar results)]], Horror becomes a rock god using his ability to play guitar with his teeth, Boogey becomes a shut-in after becoming afraid of everything, and Grim's scythe is quickly stolen again (this time by Dracula who uses it as a golf club).]]

* BroughtDownToNormal: Grim is punished by the underworld court by being stripped of his scythe and powers.

** When the gang find a cake reading "Happy Birthday, Billy and Mandy", Mandy surmises that the cake is a trap on the basis that she and Billy do not share the same birthday. Irwin adds "Maybe it's celebrating the show's birthday, yo!" "Pajama and the Sleeping Princess"

** When the gang find a cake reading "Happy Birthday, Billy and Mandy", Mandy surmises that the cake is a trap on the basis that she and Billy do not share the same birthday. Irwin adds "Maybe it's celebrating the show's birthday, yo!"

** [[Film/RobotMonster Ro-Man]], [[Franchise/StarWars Darth Vader]] and [[Literature/TheInvisibleMan Griffin]] appears as among the jurors.

** Maxwell Atoms has said in interviews that the idea to make Boogey the BigBad of the film was inspired by ''Film/StarTrekTheWrathOfKhan'', as it was a film whose BigBad was also a oneshot antagonist in the series it was based on.