[[quoteright:302:http://static.tvtropes.org/pmwiki/pub/images/GrimAdvBillyMandy_S11_6856.jpg]]

TheGrimReaper has come for a soul -- specifically, a hamster in his dying days -- but he's stopped from taking the hamster to the afterlife by two children: the [[DumbIsGood blissfully idiotic Billy]] (the hamster's owner) and [[CreepyChild the cynical, amoral Mandy]] (Billy's best friend). [[ChessWithDeath The pair challenge "Grim" to a limbo contest to save the hamster]]; when Grim loses, he becomes Billy and Mandy's newest friend -- and by "friend", we mean that he's contractually bound to be the kids' friend and cater to their every whim. Grim begrudgingly serves as something of an underworld version of Mary Poppins, thanklessly placating Billy's demands for cheap entertainment and Mandy's schemes for self-profit with his magical scythe while desperately trying to find a way to be rid of the duo for good. Thus go ''The Grim Adventures of Billy and Mandy''.

Rounding out the show's cast are Irwin, Billy's best friend and the TokenMinority (who also has a massive crush on Mandy); Sperg TheBully; Mindy the AlphaBitch; [[Franchise/EvilDead Hoss]] [[Film/EscapeFromNewYork Delgado]], a supernatural bounty hunter with more brawn than brains; Eris, the goddess of chaos and discord; General Skarr (formerly seen in ''WesternAnimation/EvilConCarne''), who now wants to garden instead of conquering the world; and Nergal, the Sumerian Death God who lives in Earth's molten core and just wants to be friends with everyone, really.

This show was actually the winner of a contest held by Creator/CartoonNetwork to determine what cartoon would be [[CartoonCartoons their next new show]]. On an interesting note, ''Billy and Mandy'' ended up lasting longer than most of the shows that CN greenlit without fan input; ''WesternAnimation/CodenameKidsNextDoor'', the winner of the contest the following year, did likewise. (Think about this: those two shows, voted to greenlight status by the viewers, ended up lasting at least two more seasons than any other show CN greenlit afterward). ''Billy and Mandy'' was originally a much darker ThreeShorts show that included another cartoon, ''WesternAnimation/EvilConCarne'' (and known then as ''Grim & Evil''), but became the more comedic (but still pretty dark) ''Grim Adventures of Billy and Mandy'' when ''Con Carne'' was dropped after the first season in an unsuccessful SpinOff attempt.

The show lasted seven seasons (2001-2008) with two movies, a couple of specials -- including a crossover with ''WesternAnimation/CodenameKidsNextDoor'' -- and a spin-off attempt called ''{{Underfist}}''.

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!! This show provides examples of:

* AccidentalMisnaming: "It's Good-'''''VIIIIIIIBES!''''' "
* AlphaBitch: Mindy.
* AlternateUniverse: It shares the same universe as ''WesternAnimation/EvilConCarne'', a universe where AbrahamLincoln is still President, and the League of Nations still exists. Its also hinted that it shares the same universe as ''WesternAnimation/CodenameKidsNextDoor'' and ''WesternAnimation/EdEddNEddy'', per the crossover. In one episode, due to the collapse of time and space, the universe is rebooted and the characters are reincarnated as the cast of ''WesternAnimation/ThePowerpuffGirls''.
** ...Which might also be part of the same universe.
* {{Animesque}}: Billy's favorite show, ''The [[XtremeKoolLetterz X-Treme]] Adventures of Brandon and Mallory''. It features [[RuleOfCool ninja fights, high-speed chase scenes, giant robots and wailing guitars]] and stars two kids with the Grim Reaper.
-->'''Mandy:''' [[LampshadeHanging Who watches]] [[SelfDeprecation this drivel?]]
* ArsonMurderAndJaywalking: Billy's dad's lucky pants are immune to lasers, supernatural forces, and mustard.
* ArtEvolution: Lampshaded in one episode, where the original episode is played to end the dispute in the character's conflicting origin stories. Grim remarks, "That doesn't even ''look'' like us!"
** Likewise, in one episode Fred Fredburger (yes!) lampshades Mandy's lack of an apparent nose.
* ArtShift: An episode ended with Billy needing Grim to fix his eyes, and with each attempt, he sees the world rendered in a different animation style.
* AssimilationBackfire: Happened to a brain-eating alien, when it was dumb enough to consume Mandy's brain.
* AnAssKickingChristmas: Billy and Mandy [[SavingChristmas Save Christmas.]]
* AttackPatternAlpha
* AttractiveBentGender: Averted. When Sperg the bully gets ahold of the wish-granting skull, the only thing on his mind is being able to go into the girl's restroom to rob them all of their money. Cue him turning into a girl so he can go in there, but the girls ridicule girl-Sperg for being such an ugly girl that he/she runs out crying. "Girls are so mean!"
* {{Autocannibalism}}: Billy is turned into chocolate, and [[ITasteDelicious finds himself so irresistible]] that he eventually eats himself down to just his head.
* AwesomeMcCoolname: Billy's Martian pet, "Admiral Wolverine Lightningbolt".
* BadSanta: Voiced by GilbertGottfried in a Christmas episode/movie. Actually Santa isn't really bad, [[spoiler:he is occasionally turned into a vampire by Mrs. Claus, who was a vampire before they married. That's happened quite a few times before.]]
* BalloonBelly: Billy sometimes does this when he binge-eats.
* BatFamilyCrossover: In the episode Company Halt, Skarr gets a visit from his exco-workers Hector Con Carne and Major Ghastly, as they reinstate the EvilConCarne criminal organization, develop a new diabolical weapon[[labelnote:*]]a giant rubber band launcher on wheels[[/labelnote]] and using it to terrorize the citizens of Endsville. Needless to say, Grim, Billy and Mandy go out and stop them.
* BewareTheSillyOnes: Billy is often the dumbest one on the show, but he has been shown to have bouts of psychotic rage that scares even Mandy.
* BiggerOnTheInside: Grim's trunk. Billy points this out by name in one episode when he, Mandy, and Irwin climb inside it.
* BilingualBonus:
** The Dwarven battle cry is "laven sus manos," Spanish for, "wash your hands."
** One of Hoss Delgado's {{Pre Ass Kicking One Liner}}s is "Piso mojado, dirtbag!", Spanish for "Wet floor, dirtbag!"
* BlackAndNerdy: Irwin.
* BlackComedy: The whole genre in the series. One of few kids shows with it, [[CrossesTheLineTwice combined]] with GrossoutShow.
* BlondesAreEvil: Mandy. Eris also counts.
* BreakingTheFourthWall: This show holds the record as the Cartoon Network show with the most fourth wall jokes. Listing all of the examples would take up a ''lot'' of space on this page.
* BreakupBreakout: After breaking off from ''Evil Con Carne'', it became the more successful of the two shows.
* BrokeTheRatingScale: Billy managed to score himself a NEGATIVE 5 on an IQ test, being outperformed by a shovel and a pair of candy bracelets.
* BrokenRecord: "DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL![[note]]I'll take the chicken.[[/note]] DESTROY US ALL!" Also counts as a MadnessMantra and an EarWorm.
** Fred Fredburger, Fred Fredburger, Fred Fredburger, Fred Fredburger, Fred Fredburger, Fred Fredburger, Fred Fredburger, [[OverlyLongGag Fred Fredburger]], yes!
* ButtMonkey: Grim and Billy, naturally, but "[[SuperheroEpisode Super Zero]]" had this ''adorable'' alien creature, who wanted to be Billy's friend, kept taking Billy's constant, near-lethal abuse.
** Nergal doesn't start out this way, but as of "Loser from the Earth's Core," this becomes one of his defining character traits - including a cameo during "The Incredible Shrinking Mandy" solely for the purpose of having him be crushed by random falling things. Even lampshaded slightly in "Underfist," when his family knows something bad is coming because he brought up how well things are going for him...
* CallToAgriculture: Skarr, the CanonImmigrant from ''WesternAnimation/EvilConCarne'' just wants to be left alone and do his gardening.
* CharacterizationMarchesOn: In the first episode she appeared in, Eris acted like a typical giddy blond teenage valley girl. Afterwards though she acted more regal and queenly with a British accent. Also a ShoutOut to {{Music/Madonna}}.
** By her next appearance, her personality change is {{lampshade|Hanging}}d and {{Hand Wave}}d away by her going through "a Valley girl stage" as is Grim's crush on her during that episode/stage.
** Mandy used to smile on occasion--though, usually after [[FamilyUnfriendlyDeath doing something horrible to the human race]]. In a much later episode, Mandy smiling tears apart the fabric of space and time.
*** Also, Mandy used to be blatantly evil and abusive but who didn't really do anything with it mostly due to not caring too much. By the end of the show, she's no longer outwardly evil, but mainly just a cold person who's more selfish than actually cruel, and who's perfectly willing to help people if it suits her.
** Mindy is pretty much a completely different character in her first few appearances.
* ChekhovsGun: From "Meet the Reaper", "Kiss kiss."[[note]]The phrase that makes Ms. Snuggles attack the nearest person.[[/note]]
* ChristmasCake: Parodied with the host of Grim's favorite late-night show, [[Creator/ElviraMistressOfTheDark Atrocia]], whose show was cancelled the moment she turned 30.
-->"The network said no one wants to see a worn-out old bag like me on TV anymore."
* CityOfAdventure: Endsville.
* CloudCuckooLander: Billy. Also, Fred Fredburger.
* ComicTrio: Mandy is the schemer, Billy is the follower, and Grim is the complainer.
* CouchGag: A message to the viewers, usually from Mandy, at the end of the theme song.
* CraniumChase: Grim is a [[RunningGag constant victim of this.]]
* CrapsackWorld: Though if the ''WesternAnimation/CodenameKidsNextDoor'' {{crossover}} is to be believed, it's confined to Endsville, and the rest of the world is just fine.
* CreatorCameo: Maxwell Atoms appears in one episode, [[DeathByCameo just long enough to poof out of existence]] after Billy breaks the hourglass representing his lifespan.
* {{Crossover}}: Sort of. Numbuh 3 appeared four times in Big Boogey Adventure.
** In "Modern Primitives", Billy finds [[WesternAnimation/TheFlintstones Fred Flintstone]] frozen in his backyard.
** Early on in "Here Thar Be Dwarves", Billy's picnic is interrupted by [[WesternAnimation/YogiBear Yogi Bear and Boo-Boo]].
** The WesternAnimation/CodenameKidsNextDoor crossover episode, which was not only a crossover of KND and this show, but of every one of CN's original shows. At least one character from each show appears in the episode, even one from ''WesternAnimation/SquirrelBoy''.
** Mandy even appears in ''WesternAnimation/FostersHomeForImaginaryFriends''. Although that appearance was her as an imaginary friend, if memory serves...which would mean ''Billy & Mandy'' is a show in the ''Foster's'' universe
*** Not quite: she was actually there as part of a montage of people returning imaginary friends to Foster's. The one that she was returning was deemed "too happy".
**** The Great Grape Ape appeared as a giant monster on "Giant Billy and Mandy All Out Attack"
* CutApart: In "Secret Snake Club".
* DawnAttack: Mandy puts on an army helmet and says "We attack at dawn" in the show intro.
* ADayInTheLimelight: The [[TheMovie finale movie]] starring the side characters, ''Underfist''. Billy, Mandy, and Grim only made some cameos.
* DeadAllAlong: An odd example. In the episode "Who Killed Who", it's implied that the old lady in the haunted house really ''was'' a ghost.
* DeadpanSnarker: Mandy, definitely. Grim has his moments, too.
* DeanBitterman: Dean Toadblatt, specifically against Weaselthorpe House, and especially against Nigel Planter. Extra points for being voiced by the original Dean, John Vernon, in a parody of his role in AnimalHouse.
* DeathsHourglass: Parodied when Grim, Billy, and Mandy entered a sanctuary filled with the hourglasses of every human being on earth. Not only does Billy flip his and Mandy's hourglass, resulting in their lives instead moving backwards until the point where they don't exist anymore, but he even flipped Grim's hourglass too (odd considering Grim's hourglass was enormous). They also break at least one, causing that person (the show's ''creator'') to blip out of existence.
--> '''Irwin''': "Whose hourglass was that?"
--> '''Billy''': "Eh, prolly no one important."
* DerailedFairyTale: "Nursery Crimes" starts the kids in the story of Literature/HanselAndGretel, but they wander off and encounter characters from other fairy tales such as Literature/{{Pinocchio}}, who wants to BecomeARealBoy by [[ImAHumanitarian eating the flesh of a real boy]].
* DetonationMoon: In the alien invasion episode.
* DeusExMachina: Grim, but more specifically, his scythe which can do anything.
** Perhaps the biggest example in from the KND crossover, with the Bone of Barnacles, which was supposed to be a torture device used on Numbuh 1 to get information out of him, but was later used to give Numbuh 1 a giant mecha sized suit of Bone Armor to fight the Delightful Reaper.
* DevilInPlainSight: Guess...
* {{Dhampyr}}: Irwin, although he's more 1/4 vampire, 1/2 mummy, and 22/7 nerd.
** GeniusBonus: 22/7 is the fractional approximation for pi.
** The Halloween episode where he was bitten by a werewolf.
* DidYouJustPunchOutCthulhu: Seen in "The Prank Call of Cthulhu".
* TheDitz: Billy, ''and how!''
* DoesThisRemindYouOfAnything: This exchange in "[[TheMovie Big Boogey Adventure]]" between Boogey and [[TheDragon Creeper]], after Boogey fails to scare Creeper.
-->'''Boogey:''' Aw, would it kill you to fake it just once?
-->'''Creeper:''' (sarcastically) It'll make the time when you ''really'' scare me ''all the more special''.
* DontFearTheReaper: Grim tries his darndest to be scary, but at his most {{badass}}, the guy's still an incompetent wuss. The way he became the Grim Reaper involved a pretty awesome display as revenge for [[spoiler:ruining his friendship with his best friend.]] So he's somewhat weak-willed..[[BewareTheNiceOnes Unless you manage to REALLY piss him off.]]
* DoubleEntendre: Billy once visited Uncle Chokey the chicken juggler.
** Which is possibly a ShoutOut to ''WesternAnimation/RockosModernLife''.
* DumbassHasAPoint: In "Billy and Mandy vs. The Martians":
-->'''Billy:''' I know Mandy's so mean, and Irwin's so needy. But that's just who they are. [[VitriolicBestBuds Sometimes our best friends are people we really don't like.]]
-->'''Grim:''' [[DeadpanSnarker Then you guys must be my best friends ever.]]
-->'''Billy:''' Hee, hee, hee. Well, if there's anything I've learned from destroying Fancy Jake, and stowing away in your trunk to Mars, and returning in a last-ditch effort to save the planet is that [[CallBack you can pick your friends, and you can pick your nose. But you can't pick your friend's nose.]] You have to let them be who they are and pick it themselves.
-->'''Grim:''' [[MyGodWhatHaveIDone What have I done?!]]
** Also in "The Incredible Shrinking Mandy" After [[spoiler: Billy makes Mandy a giant, and she wants him to turn her back to normal]]
-->'''Grim:''' Billy! Just Change Mandy back!
-->'''Billy:''' NO! You always let Mandy have her way! I don't want to encourage her.
-->'''Grim:''' Well...you were the one who encouraged her with the whole cannibalism thing.
-->'''Billy:''' And you keep breaking my arms just because she wants you to. [[Literature/TheBible Who's the bigger fool?]] [[Franchise/StarWars The fool or the fool who follows him?]]
* EarlyInstallmentWeirdness: A RunningGag in later seasons is that Mandy never smiles... except she has in early episodes as seen under PerpetualFrowner. Also, the ''Grim & Evil'' episodes were ''much'' darker in tone.
* EasterEgg: There was once an actual site online mirroring the Secret Snake Club's [[CharacterBlog 1-page shrine to their god Shnissugah]] (which consisted of an animation of the deity in question slithering back and forth, "dancing" if clicked on, a message saying they would "pwn the cool kids," and some fake ads).
* EldritchAbomination: Nergal Jr's true form is apparently horrific. Cthulhu's also showed up, and Yog Sothoth almost did. Also, ''Mandy''. (At least to her antagonists, and quite literally when she assumes an immortal slug form in the future, allowing her to conquer Earth.)
** The ending of "Scary Poppins" where [[spoiler:she is able to MIND CONTROL EVERY SINGLE CHARACTER FROM THE SHOW to scare the nanny away]] shows that Mandy is implied to be one.
* ElementalPlane: One of several D&D references involved Grim trying to take Billy and Mandy to the elemental plane of fire.
* ElvesVersusDwarves: A whole episode devoted to the subject.
* EnfantTerrible: Mandy is the [[Pantheon/HeroesAndVillains patron deity]].
* EvenEvilHasStandards: Mandy may support any and every legitimate attempt at revenge, dreams of ruling the world as a dystopian dictator, and doesn't flinch at any of the hellish Eldritch Abominations we see throughout the show. But she does NOT condone cheating.
* EvilIsNotAToy + BeCarefulWhatYouWishFor: Thromnambular (voiced by Dwight Schultz, no less)
* EvilVersusEvil
* {{Expy}}: The eponymous characters are simply human (and gender-bended, in Mandy's case) forms of [[WesternAnimation/TheRenAndStimpyShow Ren and Stimpy]]. They even copied the ''nose''.
* ExtremeOmnivore: Billy.
* EyeScream: In the episode "Complete and Utter Chaos", Billy is poked in the eye by the Apple of Discord (which had sprouted mechanical spider legs) in his sleep.
* FaceYourFears: In order to claim possession of Horror's Hand (which makes people see their worst fears come to life), Billy, Mandy, and Irwin must face their fears to overcome it.
* FamilyUnfriendlyDeath: All too common in the early episodes.
* FanFic: ''Webcomic/GrimTalesFromDownBelow'' derived from this.
* FantasticRacism: Hoss Delgado's prejudice against monsters.
** [[CompressedVice In "Billy & Mandy Save Christmas"]] Mandy has a prejudice against vampires for some reason.
* FiveManBand: ''Underfist''.
** TheHero: Irwin
** TheLancer: Hoss Delgado
** TheBigGuy: Jeff the Spider (Doubles as TheHeart)
** TheSmartGuy: General Skarr
** KidAppealCharacter: Fred Fredburger
* {{Flanderization}}: Mandy, believe it or not. Earlier in the show, she was very witty and snarky, but by no means intimidating enough to order her own parents (or anyone else other than Grim, Billy, and Irwin) around. She also had a rare smirk or two in the early episodes before becoming a complete PerpetualFrowner whose smile could bring about TheEndOfTheWorldAsWeKnowIt. She was probably more of an AntiHero in some of those earlier episodes rather than the more consistent NominalHero later on.
* FlatEarthAtheist: Mandy.
* FluffyTheTerrible: Mandy.
* ForgottenFallenFriend: In Nergal Jr.'s origin episode, he paralyzes a boy who was disgusted by his appearance and shapeshifts into his form, doing the same to all other children he meets who refuse to be his friend (as an homage to Creator/JohnCarpenter's ''Film/TheThing1982''). In future episodes, this boy's form is Nergal Jr.'s "default". The other children were rescued by Billy and Mandy, but Nergal Jr.'s [[WhatHappenedToTheMouse initial victim is never mentioned or seen again]]... [[FridgeHorror and this episode takes place in bitterly cold weather.]]
* TheFourthWallWillNotProtectYou: "And you. You will be my closest, most bestest friend of all!"
* {{Fratbro}}: In "Attack of the Clowns", while Mandy and Grim are trying to help Billy conquer his fear of clowns, Billy goes to his happy place in his mind where he encounter his imaginary "Inner Frat Boy" who helps Billy conquer his fear.
* TheFreelanceShameSquad: Grim meets up with his old schoolmate, The Boogeyman, and is not happy about it. When asked why, we flashback to their school days, where Boogey gave Grim a giant wedgie in front of the whole school. Right before they all laugh at him, one monster says "[[LampshadeHanging Let's all point and laugh at his humiliation!]]"
* FutureBadass: In the ''Dune'' parody in which Future Mandy rules the world, Irwin (or a descendant) is the huge, muscular leader of LaResistance.
* {{Gasshole}}: Billy and Mandy (somewhat).
* GettingCrapPastTheRadar: [[Radar/TheGrimAdventuresOfBillyAndMandy A whole page.]]
* GiantSpider: Jeff, is a partial subversion - he's a giant spider, but he's extremely friendly, kind, and only wants his father (Billy) to love him. Billy's arachnophobia makes things very difficult...
* GirlWithPsychoWeapon: When Billy's mom tells you that dinner is ready, you better get your butt to the table. ''* revs up the chainsaw* ''
* TheGrimReaper: Obviously.
* GrossUpCloseUp
* GrossoutShow: PlayedForLaughs.
* HairRaisingHare: In "Wishbones" Pud'n wishes for a pet rabbit. The rabbit repeatedly attempts to kill him, no matter how badly injured it becomes.
* HumanoidAbomination: Nergal Jr and possibly Nergal.
** Oh, and if you've seen "Scary Poppins", [[spoiler:Mandy is seen to be one as well, controlling everybody in Endsville]].
* HumiliationConga: Boogie gets this to absolutely insane levels after Grim takes Horror's hand from him. A rock falls off the ceiling and lands on him, the ground he's standing on breaks and said rock falls on him again, the ground breaks ''again'' and the rock follows, he gets thrown into the ceiling by the giant squid from earlier in the episode, again, along with the rock, he lands (but not before getting attacked by a swarm of bats on the way down) and gets crushed by the rock, which breaks, only for ''a bus'' to come out of nowhere and send him flying into his ship, which tilts and sends him hurtling into a cannon, which fires him through his ship and into a wall, sinking it.
* HypercompetentSidekick: Grim.
* HypocriticalHumor: During the ''Underfist'' special.
-->'''General Skarr:''' Wait a minute, I'm not a monster.
-->'''[[EyepatchOfPower Hoss Delgado]]:''' No, but I don't trust one-eyed weirdoes either.
* ImAHumanitarian: The series' version of Pinocchio believes that the only way he can become a real boy is if he eats the flesh of a real boy. One episode (Which Came First) has Sperg eat Pud'n's arms and legs after they get stranded in the desert together, though that becomes part of the show's NegativeContinuity, while another episode (Tastes Like Chicken) is all about Billy jumping to the conclusion that Mandy is a cannibal who's eaten his friends and family and plans to eat him next, which ends with a played-for-laughs implication that she actually has eaten Irwin.
* IAteWhat: Grim's cookies. For those who don't know, Aunt Kali's secret ingredients are [[spoiler:dung beetles, nightcrawlers, and mashed crickets.]]
** [[SubvertedTrope But the cookies are so delicious, nobody cares after the initial surprise.]]
* IFellForHours. An episode when Mandy was relating fairy tales and Billy was Humpty Dumpty.
* IGotARock: In "[[HalloweenEpisode Grim Or Gregory]]," Billy gets a rock. And promptly [[BigEater eats it]].
* ITasteDelicious: Provides the page image. In one episode, Billy is changed into pure chocolate, [[HilarityEnsues and can't stop eating himself.]]
* IncrediblyLamePun: During the ChristmasEpisode, Grim and Mandy are busting into the lair of a vampire, coming to a locked door, which does nothing to deter Grim. Mandy asks how they expect to get through, to which he replies "A skeleton key!" [[LampshadeHanging He is then pelted with a snowball.]]
** In "The Firebird Sweet", Mandy asks what type of cereal box comes with a phoenix. Grim looks at the box and says, "Well, this cereal came from Arizona." [[DontExplainTheJoke In other words,]] Phoenix, Arizona.
* InformedJudaism: Billy in the ChristmasEpisode.
* InterspeciesRomance: Nergal and Aunt Sis's marriage is never presented as anything other than a mutually loving relationship. (But they did have a rather CreepyChild together.)
* JackassGenie: The wishing skull, Thromnambular.
* JerkAss: Mandy.
** Also a JerkSue on many occasions.
*** The JerkSue ness often tends to piss off a few people. [[http://tyrranux.deviantart.com/art/Stewie-Griffin-VS-Mandy-100793958 This]] fan art sums up the complaints wonderfully.
** Strangely, this makes her beast transformation in the "Sickly Sweet" episode oddly appropriate. Just listen to the animal sounds she makes whenever she isn't spazzing out. Sound familiar?
* KickMePrank: When Grim narrates about Jack, you see Jack using this prank on various people in the animated montage.
* KillEmAll: The episode "Wishbones". 9 characters have their wishes granted. Not many of them survive. [[ResetButton Though retconned when Grim wishes Billy and Mandy never found the skull, undoing the wishes.]]
* LampshadeHanging: In one episode, people are sucked through telephones and into an alternate dimension, leaving behind their shoes. Mandy asks why the shoes were left behind and Grim comments, "Of course they got left behind, shoes can't fit through a telephone, they're way too big."
** In TheMovie (the last one):
--> '''Mandy''': What are you doing?
--> '''Billy''': I'm singing! There's always singing in animated movies!
** Half of the show is one big lampshade hung up like a giant pinata.
** At the end of ''[[SuperheroEpisode Super Zero]]'', Billy asks Grim if he could be changed back from a superhero to a normal boy. Grim, frustrated, yells:
--> '''Grim''': '''''THERE'S NOTHING NORMAL AROUND HERE!!!!!'''''
* LightningCanDoAnything
* LittleMissSnarker: Mandy could be the trope namer.
* LimitedWardrobe
* MidBattleTeaBreak: A subversion. When Grim, Billy, Mandy, and Irwin are racing against Boogie and his crew for possession of Horror's Hand, part of the race itself is a stop for lunch at noon.
* MidlifeCrisisCar: Discussed.
* MistakenForPedophile: In "Duck!" Grim is seen trying to scare children by showing them his skeleton body while shouting "Look at my body!". He is arrested shortly afterward.
* MisterSeahorse: Jeff.
* MrsClaus: Who is a vampire.
* MultiCharacterTitle (if you count "Grim" as being one of three character names in the title)
* MultipleChoicePast: The origins of Grim and his profession vary from time to time, should the plot of the episode call for it.
* MusicalEpisode: The "evil meteor from outer space" short was a ShoutOut to ''Theatre/LittleShopOfHorrors'', with [[AwesomeMusic/WesternAnimation original music]] by Music/{{Voltaire}}.
* MyLittlePhony: Grim's favorite show "My Troubled Pony", combining colorful ponies with an over-the-top SoapOpera. Unfortunately for him, it was CutShort.
* NameAndName (''Grim and Evil'', ''Billy and Mandy'')
* NegativeContinuity: Although it tends to recall certain events of various episodes.
* NeverSayDie: Obviously averted, what with death ''itself'' being a main character and all, and an episode titled "Who Killed Who?".
** Also we have a tidbit where Grim says "Billy, what were you trying to do? Scare me to me?"
* NeverTrustAHairTonic: Billy tries some hair tonic and ends up growing hair all over his body looking like a sasquatch. It turns out that all he has to do to get rid of it is wash it off.
* NoCelebritiesWereHarmed: Principal Goodvibes is most likely an {{Expy}} of Paul Lynde.
* NoFourthWall: And how!
* NonindicativeName: "The Incredible Shrinking Mandy" is actually about Billy attempting to shrink Mandy but accidentally making her giant.
** "Billy's Growth Spurt" even has a Nonindicative Title Slide depicting Billy as a middle-aged hick, when in fact the episode revolved around a growth on his back that eventually detached and turned into a miniature version of Billy (affectionately named "Yawb-yawb" by Billy himself for the sound it makes).
* NonSequiturThud: Billy's first appearance in ''Underfist'' includes this.
* NoodleIncident: Several of the people stated by Boogie to have stolen Grim's scythe (including a girl scout troop, the Sleestaks from ''LandOfTheLost'', and a turkey salad sandwich) were not shown stealing it in the show, leading one to speculate what may have happened during these incidents.
* NotEvenBotheringWithAnExcuse: Combined with RuleOfThree to make a minor RunningGag in one of the [[Franchise/HarryPotter Nigel Planter]]-centric episodes; whenever Nigel starts singing and playing with [[ContinuityNod a puppet]], two characters [[INeedToGoIronMyDog make up excuses to leave]], while the third doesn't bother justifying themselves.
--> '''Grim:''' I, uh... I have to meet somebody.
--> '''Billy:''' I left the oven on.
--> '''Mandy:''' You're weird.
* NothingExcitingEverHappensHere: Endsville. Justified in that a town where [[TheGrimReaper Death]] resides is ''bound'' to be a [[WeirdnessMagnet weirdness magnet]].
* NotThisOneThatOne: Billy and Pud'n entered a pie eating contest and Billy ate all the pies he saw at a table. However, those were Pud'n's pies. Pud'n was declared the winner.
* TheNudifier: General Skarr's "Atomic Hot Pants Raygun". Well, it doesn't cause his clothes to ''disappear'', just change, but, still.
* OffModel: Nergal and Nergal Juniors' teeth sometimes switch from jagged to flat and back again when they're talking.
* OhCrap: Jack O'Lantern displays this expression when the knight who killed him ([[spoiler:really Irwin in a knight costume]]) has returned to finish the job.
* OppositeDay: A short in the first episode, as reckoned once the ''Evil Con Carne'' shorts were removed.
* OverlyLongGag: DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL!...
** I'll take the chicken.
*** DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL! DESTROY US ALL!
** Also, the {{flashback}} when Billy wants to go on a picnic.
* PerpetualFrowner: Mandy.
** If she '''does''' smile, the very fabric of reality is pulled apart. A CrowningMomentOfFunny ensues.
*** "YOU FOOLS! YOU'VE DISRUPTED THE NATURAL ORDER!"
** Also a result of {{Flanderization}} since in the ''Grim & Evil'' shorts and some episodes of earlier seasons did show her [[http://www.youtube.com/watch?v=VI1670PVrsM smiling more]]. Not a whole lot more, but not to "must never smile" extremes.
** Bit of Fridge Logic perhaps, but in previous instances of Mandy smiling, she had a reason. In the pageant, her smiling without cause broke the rules.
** Whenever she smiles and nothing bad happens, something bad's ''already'' happened, and she was merely pleased with the -- often unsettling -- results.
* PhysicalGod: Eris is one of these.
* PlayingPictionary: Dracula's Pictionary drawing of Abraham Lincoln is mistaken for successively more absurd things.
* PopularIsDumb: Mindy, definitely.
-->'''Mindy:''' But as beautiful and popular as I am, I bet there are some people who've never even heard of me: people in [[CriticalResearchFailure countries like Paris or Toronto, or in cities like Africa]].
* PortalPool: One episode featured Grim's sythe reflecting sun light on to Billy's pool. Naturally, [[HilarityEnsues everyone jumps in.]]
* PottyEmergency: The episode "Terror of the Black Knight" is all about this. Billy wants a badass knight costume just like Irwin, so Grim gives him one, but unfortunately, Billy drank too much punch that he has to use the bathroom, and he can't get the knight armor off unless he wins a challenge with someone. He then wins a breakdancing contest against Mandy, but as soon as he gets his armor off, [[PottyFailure he doesn't have to use the bathroom anymore. You can also hear splashing sounds during the breakdance scene.]]
--> '''Mandy''': So, aren't you gonna rush over to the boys' room?
--> '''Billy''': You know the funny thing? I don't need to go anymore.
--> ''[Billy walks off]''
--> '''Mandy''': Ew.
** In the Christmas special, Billy mistakes the MallSanta line for the line to the bathroom. "I feel like my bladder's gonna explode!"
** Also happens in the episode "Tricycle of Terror", after Billy drinks too much lemonade.
* PowerTrio: Mandy (evil), Billy (stupid), Grim (hapless)
* PragmaticVillainy: [[spoiler: In the crossover, the Grim Adventures of the Kids Next Door, Mandy and the [[ItMakesSenseInContext Delightful Reaper]] get into a GiantMecha style fight. Once Grim and Numbuh One get on the scene, she allows herself to be assimilated so she can join the winning team, and also seems to totally take over the Delightful Reaper's HiveMind in the process.]]
* ProductionThrowback: The film grain effect during the title sequence hides this, but [[http://hurtermonkey.blogspot.com/2007/01/7-year-itch.html the gravestones are inscribed with the names of three fellow series]] (''WesternAnimation/EvilConCarne'', ''WesternAnimation/TimeSquad'', and ''WesternAnimation/WhateverHappenedToRobotJones''), all of which were cancelled during the production the show's first solo season.
* ProperlyParanoid: Gladys, Billy's mom. She has every right to be paranoid of Billy hanging out with the Grim reaper, considering he reaps souls and all.
* PunctuatedForEmphasis:
** In "My Fair Mandy": "IMPORTANT! COMMERCIAL! MESSSAAAGGGEEE!"
* PutOnABus: Billy's Mom goes away to live with her sister in the first episode of the main series but comes back in the same season. (Which, for strange scheduling reasons, was 11 months later.)
* RaisedByWolves: Pud'n was raised by wolves. Funnily, said wolves are seen watching TV in his backyard after he reveals this.
* RelaxOVision: In "Here There Be Dwarves", a Drill Sergeant (voiced by R. Lee Ermey, no less) pops up to explain they'll be showing a cute koala instead of the overly-violent battle between the dwarves and the elves.
* ReverseCerebusSyndrome: The early episodes are a lot darker and morbid in tone. After a few episodes though the series hit it's stride and evolved into the wacky, nonsensical show it's known as.
* {{Retraux}}: One episode had the trio wind up in a world made to homage the black and white cartoons from TheGoldenAgeOfAnimation. Too bad Mandy puts a stop to it, since she despises retro cartoons.
* RightOnQueue: The episode "The House Of Tomorrow" has a seemingly short line for a rollercoaster, but it turns out that's the line you have to wait on to get on line for the rollercoaster.
** And apparently, somebody died on the line and a baby was born on it.
* RoadSignReversal
-->'''Dean Toadblatt''': Hey, jerkwad, youíre going the wrong way! The Enchanted Meadow is in that spooky cave, and the deadly Manticore is in that happy meadow! Canít you read?
* RobotMe: Mandroid and Billybot in the first [[TheMovie movie]].
* RPGEpisode: Grim's idea of ''breaking'' Billy and Irwin's video game addiction, [[HilarityEnsues didn't work as intended.]]
* SassyBlackWoman: Irwin's Grandmama, Tanya.
* SavingChristmas: [[ExactlyWhatItSaysOnTheTin "Billy & Mandy Save Christmas"]]
* ScareDare: An ''abandoned house''. [[spoiler:It's just some old lady living alone. Well, OK, [[RealAfterAll she is also a ghost]].]]
* SchoolClubsAreSeriousBusiness: There was an episode where the students joined school clubs. Mandy joined the Secret Snake Club, who believes in a snake-god that will eat all of the cool kids. Billy joined the Secret Service club, and discovers the knitting club is being used as a criminal front.
* TheScottishTrope (saying [[spoiler: "Lord Moldybutt"]])
** Hilariously enough, not even [[spoiler: Lord Moldybutt]] himself is immune to this.
* SecondPersonAttack:
** "Chicken Ball Z" begins with Mandy repeatedly punching Billy in the face at a karate dojo, portrayed this way.
** Towards the end of the episode "Sister Grim", the giant nun (formed by many regular sized nuns) sends Grim home with a big punch after they find out that he wasn't actually a nun the whole time.
** At the end of the episode "Hoss Delgado: Spectral Exterminator", Hoss fights a werewolf. They jump up, and the camera pans, ''Matrix''-style, to (almost) the POV of the werewolf. Hoss fires his slime gun at the werewolf, filling the screen to a fade-to-black.
* ShapeShifter
* ShipTease: The topic of Billy and Mandy getting married seems to come up often. In one episode, he even ''kissed'' her.
* ShoutOut: [[ShoutOut/TheGrimAdventuresOfBillyAndMandy Now has its own page.]]
* SideEffectsInclude: In "Nergal's Pizza", Nergal tells Jr. to spike Granny Grim's pizza sauce with some "horrible ghastly elixir". When Jr. asks what it does, Nergal responds "I don't know, but it's ''ghastly''."
* SnapBack: With gusto. A good third of the episodes end with characters dead.
* SoapWithinAShow: Grim's favorite show ''[[Franchise/MyLittlePony My Troubled Pony]]''.
* SociopathicHero: Mandy and Grim.
* SpeakOfTheDevil: Lord Moldybutt. If you say his name, something breaks nearby, whether it be a tree falling, or a door knob falling out. It doesn't matter who's affected by it, (because once, a tree falls on him) it will happen.
* SpiderPeople: The title character of the episode "The Wrath of the Spider Queen".
* SpiritualSuccessor: To ''WesternAnimation/TheRenAndStimpyShow'', right down to copying both characters (Gender not necessarily withstanding.)
* SpottingTheThread: When Nergal Jr. tries to impersonate Mandy he screws it up by smiling, something she would never do, and Billy picks up on it immediately. No one seems to notice that Mandy suddenly got glasses for no apparent reason, though.
* SquashedFlat: In ''Billy and Mandy's Big Boogey Adventure'', the villains' boat gets flattened vertically in one scene, and then falls over on its side.
* SuddenAnatomy: In one early episode, Mandy spontaneously grows nostrils when Billy picks her nose. Later on, however, her not having a nose is actually a plot point.
* SuddenlyFluentInGibberish: In the ''Underfist'' special, Irwin pleads with Hoss, Skarr, and Jeff that, among other things, Mindy was kidnapped by a marshmallow bunny. However, his hysterical InelegantBlubbering couldn't be understood by anyone save Jeff, who speaks "crybaby."
* SuperWindowJump: Played with.
* SwissArmyAppendage: Hoss Delgado's prosthetic hand. It's typically a metal hand,{{chainsaw|Good}} or ArmCannon. (The video game even refers to it as a "Swiss Army Hand" in Hoss' bio.)
* TarotMotifs: During the credits. Not named as such, but Billy is clearly The Fool, Mandy The Hierophant, and Grim... [[TheGrimReaper well, let's just say he ain't the Wheel Of Fortune]].
* TastesLikeDiabetes: The Happy Huggy Stuffy Bears and Enchanted Forest from "The Crass Unicorn" are InUniverse examples of this trope. They get disgusted reactions from Mandy and Grim.
* TeamPet: One-shot character "Admiral Wolverine Lightningbolt", an alien whom Billy named because [[RuleOfCool "those are the three coolest words in the universe."]]
* TerritorialSmurfette: One episode featured a tribe of [[TheSmurfs Smurf]] [[{{Expy}} expies]] and Grim tried to capture them. One of his attempts consisted on disguising himself as a female of their species, resulting on him getting a beating from ''their'' Smurfette.
* ThickLineAnimation
* ThirdPersonPerson: Dracula.
* ThoseTwoGuys: Grim and Mandy often play this part in the episodes that revolve around Billy.
* ToiletHumor: Constantly. In "Hog Wild", Billy, fed up with rules, tries to fart on Grim. [[spoiler: Instead, he soils his pants.]]
** Actually, this is at near-RunningGag level with Billy. You'd be hard-pressed to find an episode without at least one occasion of Billy needing to use the toilet or talking about how he soiled himself. Very common random joke for this show.
* TongueOnTheFlagpole: Billy gets his tongue frozen to Santa's sleigh in the ChristmasSpecial.
* TooDumbToLive: Billy, on a good day.
** He somehow managed to get -5 in a IQ test.
* TooSpicyForYogSothoth: Two examples act as joint {{Trope Namer|s}}.
* {{Transplant}}: General Skarr from ''WesternAnimation/EvilConCarne'', who's nobly trying to give up a life of world domination for suburban normalcy. He's fond of garden gnomes and cornbread.
** "Real corn makes it SPECIAL."
* TheUglyGuysHotDaughter: Gender inversion, Sperg and his mom.
* VagueAge: None of the main kids' (Billy, Mandy, Irwin, etc.) exact ages are ever mentioned (though they appear to be around 11 or 12), and their school seems to be a combination of both elementary school and junior high. Billy mentions repeating the 2nd grade again, but that might have been just a one-off gag.
* ValleyGirl: Eris was portrayed as one in her first appearance. To explain the change regarding her later characterization, Grim mentioned her going through a "Valley Girl phase."
* VerbalTic: Irwin, yo!
** Fred Fredburger! Yes.
* VillainSong: Mindy gets one in ''Underfist''.
** The [[Theatre/LittleShopOfHorrors Mean Green Mother From Outer Space]] (voiced by {{Music/Voltaire}}) sang a song about how he wants to eat brains.
* WasItAllALie: Parodied in "Scary Poppins". Being informed that Mandy is not related to him is such a shock to Billy's Dad that it causes him to question whether ''anything'' in his life is true, including his real son and his marriage. Granted, Billy's dad is an [[TooDumbToLive idiot]].
* WellDoneSonGuy: [[GiantSpider Jeff the Spider]] endlessly aims to please no matter how many times the arachnophobic and TooDumbToLive Billy tries to murder him.
--->'''Jeff:''' ''*while repeatedly jabbed in the eye with a large stick* '' Why won't you love me, Dad? I'll be whatever you want me to be!
--->'''Billy:''' ''I want you to be dead!''
* WeirdnessMagnet: Anyone and anything associated with Grim.
** {{Lampshade|Hanging}}d in the crossover with KND, Numbuh 1 states all the weird stuff happening in Endsvile is why the KND prefer to stay away from that area.
* WhamLine: [[spoiler: "Irwin's Grandmama is Dracula's wife?!"]]
* WhoWantsToLiveForever: Jack O'Lantern, although in his case it's less "immortality sucks" than it is "immortality having to wear a pumpkin for a head sucks".
-->'''Jack''': 364 days a year, and I can't even go to the Ding-Dong grocery store to buy pudding! And do you know why?!
* WhoWritesThisCrap: PlayedForLaughs occasionally, where it cues to a monkey or a baby in front of a typewriter.
* WhyDidItHaveToBeSnakes: Billy has severe arachnophobia, which is bad news for Jeff.
** He also has a fear of clowns and the mailman.
*** And [[NinjaPirateZombieRobot spider-clown-mailmen]].
** Irwin's greatest fears are stand-up comedy and bears. Cue him getting mauled by them very quickly.
** Mandy's greatest fear is the possibility that she will grow out of being who she is, and actually become nice... and furthermore, marries Irwin.
-->'''Mandy''': "I'm glad that's over with." ''[[BrickJoke *Gets mauled by the bears*]]''
** Grim and Billy believe that Mandy is afraid of ice skaters, but Mandy denies it, she just "doesn't trust the way they spin".
-->'''Grim:''' Like that ice skating thing?\\
'''Mandy:''' It's not a thing, alright? It's ''not''... a thing!
* WizardingSchool: Dean Toadblatt's School of Sorcery.
* [[WhatHappenedToTheMouse What Happened to the Hamster?]]: Remember how this all started with Billy's hamster? Never heard from again except in flashbacks.
* {{Yandere}}: Nergal Jr. (although a sweet and lonely child) can become so obsessed with making friends that if someone befriends him, he'll do anything to make sure that he is their best friend. Usually, he doesn't realize how angry and jealous he can get.
** His father was a bit like this himself.
** The rabbit from the wishing skull episode.
* YourBrainWontBeMuchOfAMeal: The brain-eating meteor doesn't find anything in Billy's head. Human and Martian zombies also find nothing appetizing in Billy's head.
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