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->Voiced by: Greg Eagles
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->Voiced by: Greg EaglesCreator/GregEagles
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* PlatonicLifePartners: With Mandy. They have been best friends, [[WithFriendsLikeThese if you can call them friends]], since they were infants.
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* PlatonicLifePartners: With Billy. They have been best friends, [[WithFriendsLikeThese if you can call them friends]], since they were infants.
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* UncannyValleyGirl: Rather it was intentional or not, Mandy in the original short film. She's a GenkiGirl that comes across as creepy to most viewers. She also seems to be a bit too happy trying to convince Billy to drill a hole in his skull.
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* AmbiguousDisorder: It's fairly obvious that Billy has genuine mental problems in addition to being extremely stupid, as shown by his bouts of psychotic, murderous rage. He can barely focus and is often hyperactive (like many with ADHD). It's possible that he may have inherited this from his mother.
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* AmbiguousDisorder: It's fairly obvious that Billy has genuine mental problems in addition to being extremely stupid, as shown by his bouts of psychotic, murderous rage. He can barely focus and is often hyperactive (like many with ADHD).hyperactive. It's possible that he may have inherited this from his mother.
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* HeterosexualLifePartners: He is shown to be close friends with Irwin.
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* NiceHat: He wears a signature small red baseball cap.
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* SimpletonVoice: Not only is Billy extremely stupid, but his voice sounds so too.
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* InsistentTerminology: She doesn't have a fear of professional figure skaters. She just doesn't trust the way they spin, is all.
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* EmotionlessGirl: She seems to have only three major emotions: Indifference, disgust, and anger. This trope was exaggerated over time thanks to Flanderization. In season 1, she spoke with more emotion in her voice and was far more prone to looking surprised or worried at the strange things she came across. She also ''smiled'' at the end of the first episode and the universe didn't fall apart.
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* EmotionlessGirl: She seems to have only three major emotions: Indifference, indifference, disgust, and anger. This trope was exaggerated over time thanks to Flanderization. In season 1, she spoke with more emotion in her voice and was far more prone to looking surprised or worried at the strange things she came across. She also ''smiled'' at the end of the first episode and the universe didn't fall apart.
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* JerkassFacade: When he decides to save the kids during Nergal's first appearance, he insists it's not because he likes or misses them; he says he's just saving them now so he can eat them later.
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* JerkassFacade: When he decides to save the kids during Nergal's first appearance, he insists it's not because he likes or misses them; he says he's just saving them now so he can eat them later. He often claims he hates his friends but its made very clear he does care about them and in the end would not let them get hurt. He really is a pretty decent guy.
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* NakePeopleAreFunny: The episode "That's My Mummy" does this thrice.
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* NakePeopleAreFunny: NakedPeopleAreFunny: The episode "That's My Mummy" does this thrice.
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* NakePeopleAreFunny: The episode "That's My Mummy" does this thrice.
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* DependingOnTheWriter: Whether he's an honest to goodness NiceGuy who is simply so stupid that he's often InnocentlyInsensitive or a bratty JerkWithAHeartOfGold varies from episode to episode.
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* BigEater: He loves stuffing his face with chocolate, tacos, sandwiches, burgers, pizza, cookies and more. He apparently inherited this trait from his dad. He probably avoids getting fat like his dad by burning it off with his hyperactive running, or he has slow metabolism.
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* BigEater: He loves stuffing his face with chocolate, tacos, sandwiches, burgers, pizza, cookies and more. He apparently inherited this trait from his dad. He probably avoids getting fat like his dad by burning it off with his hyperactive running, or he has slow metabolism.running.
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* AbusiveParents: Depending on the episode. His mom always complains about his lack of enthusiasm for his job and his dad would never talk to him and always listened to country music.
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* AbusiveParents: Depending on the episode. His DependingOnTheWriter; his mom always complains about his lack of enthusiasm for his job and his dad would never talk to him and always listened to country music.
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* MotorMouth: Of the [[UpToEleven Turbocharged V-12]] variety. [[Creator/RichardStevenHorvitz RSH]] really shows off his speed-talking skills when Billy ''really'' gets going.
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* EvilSoundsDeep: He speaks in a baritone Jamaican accent.
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* MistreatmentInducedBetrayal: He's always scheming to do this on Billy and Mandy so he can escape his enslaved position under them.
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* MistreatmentInducedBetrayal: He's always scheming to do this on Billy and Mandy so he can escape his enslaved position under them. [[spoiler: He succeeded in "Halls of Time" by allowing their sand clocks to stay upside down, but then he forgot to flip his own back up]].
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* BigEater: He loves stuffing his face with chocolate, sandwiches, burgers, pizza, cookies and more. He apparently inherited this trait from his dad.
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* BigEater: He loves stuffing his face with chocolate, tacos, sandwiches, burgers, pizza, cookies and more. He apparently inherited this trait from his dad. He probably avoids getting fat like his dad by burning it off with his hyperactive running, or he has slow metabolism.
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%%* AmbiguouslyHuman
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* ButtMonkey: He's the biggest one of the trio. Billy and Mandy constantly torment him
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* ButtMonkey: He's the biggest one of the trio. Billy and Mandy constantly torment Just about everybody on the show treats him badly.
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* ButtMonkey: A lot less than Billy, but he has his moments of humiliation when he's near Mandy or a rival.
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* ButtMonkey: A lot less than Billy, but he has his moments He's the biggest one of humiliation when he's near the trio. Billy and Mandy or a rival.constantly torment him
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* TheDragon: Has to obey Mandy, who is evil and intent on world domination.
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* MistreatmentInducedBetrayal: He's always scheming to do this on Billy and Mandy so he can escape his enslaved position under them.
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* BigEater: He loves stuffing his face with chocolate, sandwiches, burgers, pizza, cookies and more. He apparently inherited this trait from his dad.
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* LethalChef: He's a horrible cook who can make sandwiches thick enough to fracture Grim's skull and teeth and makes chili that can erase your nose and mouth.
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* AmbiguouslyHuman
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Sorry, remembered that one wrong.
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* ImprobableAccent: In the Traditional Chinese dub, he has a Taiwanese accent but most other main characters (including and especially Grim) speak Putonghua without any strong accents.
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* UnexplainedAccent: In the Traditional Chinese dub, he has a Taiwanese accent but most other main characters (including and especially Grim) speak Putonghua without any strong accents.
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*ImprobableAccent: In the Traditional Chinese dub, he has a Taiwanese accent but most other main characters (including and especially Grim) speak Putonghua without any strong accents.
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** Despite her hatred for humanity and essentially all other forms of life, she won't let it end that easily, or at least if ti's not on her grounds. [[spoiler:She refuses to let Pandora's box release the plague that will end humanity, as she resents that her new classmate Pandora tricked her into opening the box. After sealing Pandora into her box, Mandy vows that she will one day unleash her own plague against humanity.]]
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* DarkIsNotEvil: He may be a skeleton in a black cloak who collects people's souls when they die, but at the very least he's nowhere as evil as [[VillainProtagonist Mandy]].
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* DarkIsNotEvil: Zigzagged. He may be a skeleton in a black cloak who collects people's souls when they die, die and occasionally helps speed up the procedure, but at the very least he's nowhere as evil as [[VillainProtagonist Mandy]].
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* ChaoticStupid: When Billy takes Mandy's raw nerve, he gleefully abuses Grim, implying that a lack of courage was the only thing that stopped him from doing so before (unless the nerve also influenced his overall disposition since it was ''Mandy's''). He also has an "inner frat boy" that advises him to beat the crap out of anything he doesn't understand.
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* ChaoticStupid: When Billy takes Mandy's raw nerve, has ben called as the true lord of chaos and destruction as he gleefully abuses Grim, implying has no logical thought process, no restraints and no stability whatsoever. More than any other character he can alternate between almost every single role (that his idiocy and insanity allows him) depending on his whims because he has no internal consistency. He can be a HeroicWannabe, a bully wannabe, a peacebringer, a warmonger, an AxCrazy maniac, a literal pet, a gum machine, a conniving lawyer and a jogurt creator all in a day's work. Thas is why he is the protagonist most fitting to the show's setting. He is just as random as the surreal world that a lack of courage was the only thing that stopped him from doing so before (unless the nerve also influenced his overall disposition since it was ''Mandy's''). He also has an "inner frat boy" that advises him to beat the crap out of anything he doesn't understand.is inhabiting.
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* NeverMyFault: In "Billy and Mandy's Jacked-Up Halloween", he indirectly causes all the conflict because he borrowed Grim's scythe, but blatantly shirks responsibility after Jack O'Lantern is defeated and Grim gets his scythe back.
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* NeverMyFault: In "Billy and Mandy's Jacked-Up Halloween", he indirectly causes all the conflict because he borrowed Grim's scythe, but blatantly shirks responsibility after Jack O'Lantern is defeated and Grim gets his scythe back. He is just too stupid to understand that what he says makes him guilty as well.
* NotSoHarmlessVillain: When Billy takes Mandy's raw nerve, he gleefully abuses Grim, implying that a lack of courage was the only thing that stopped him from doing so before (unless the nerve also influenced his overall disposition since it was ''Mandy's''). He also has an "inner frat boy" that advises him to beat the crap out of anything he doesn't understand.
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* VillainProtagonist: The mildest example of the three, though it must be said that he can be as horrible as Mandy towards Grim and the whole world though in a mindless way. He usually gets a pass due to being mentally stunted and can be harmless when he isn't actively AxCrazy. He's also the only one of the three who ever has heroic motivations, though he tends to do more harm than good when acting on them.
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* VillainProtagonist: The mildest example of the three, though it must be said that he can be as horrible as Mandy towards Grim and the whole world though most often in a mindless way. He usually gets a pass due to being mentally stunted and can be harmless when he isn't actively AxCrazy. He's also the only one of the three who ever has heroic motivations, though he tends to do more harm than good when acting on them.
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->Voiced by: Music/GreyDeLisle
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->Voiced by: Music/GreyDeLisleCreator/GreyDeLisle
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* JerkassFacade: When he decides to save the kids during Nergal's first appearance, he insists it's not because he likes or misses them; he says he's just saving them now so he can eat them later.
* SeveredHeadSports: Has been subjected to this by Mandy a time or two.
* WhyDidItHaveToBeSnakes: Horror's Hand is useless against him because he already experiences his worst fear every single day: being with Billy and Mandy.
* FreudianExcuse: ''Underfist'' reveals that his fear of spiders was due to Bun-Bun repeatedly dangling spiders in his crib.
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* WhyDidItHaveToBeSnakes: Hates spiders with a passion, which creates some rift between him and Jeff, a spider who sees Billy as his father due to hatching his egg.
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* WhyDidItHaveToBeSnakes: WhyDidItHaveToBeSnakes:
** Hates spiders with a passion, which creates some rift between him and Jeff, a spider who sees Billy as his father due to hatching hisegg.egg.
** ''Billy & Mandy's Big Boogie Adventures'' combines his three greatest fears (spiders, clowns, and the mailman) into one horrifying monstrosity.
** Hates spiders with a passion, which creates some rift between him and Jeff, a spider who sees Billy as his father due to hatching his
** ''Billy & Mandy's Big Boogie Adventures'' combines his three greatest fears (spiders, clowns, and the mailman) into one horrifying monstrosity.
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* AmbiguousDisorder: It's fairly obvious that Billy has genuine mental problems in addition to being extremely stupid, as shown by his bouts of psychotic, murderous rage. He may have inherited this from his mother.
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* AmbiguousDisorder: It's fairly obvious that Billy has genuine mental problems in addition to being extremely stupid, as shown by his bouts of psychotic, murderous rage. He can barely focus and is often hyperactive (like many with ADHD). It's possible that he may have inherited this from his mother.
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[[folder:Grim]]
->Voiced by: Greg Eagles
[[quoteright:220:http://static.tvtropes.org/pmwiki/pub/images/grim_804.png]]
The GrimReaper who is fated to be Billy and Mandy's "best friend" forever after losing a limbo contest to them.
----
* AbusiveParents: Depending on the episode. His mom always complains about his lack of enthusiasm for his job and his dad would never talk to him and always listened to country music.
* AcquaintedWithEmergencyServices: He has this relationship with the nursing staffs at the retirement homes when he comes for the elderly residents, as shown in Season 5 "Home of the Ancients".
-->'''Gloria''': Hi, Grim.\\
'''Grim''': S'up, Gloria.\\
'''Gloria''': Aw. Are you here for Mr. Silverman?\\
'''Grim''': No. That's next week.
* {{Adorkable}}: Despite being the shadow of death itself, he has his fair share of adorably dorky moments throughout the series, especially during the flashback in ''Wrath of the Spider Queen''.
* AffablyEvil: Is remarkably polite when he isn't putting his scythe to work or getting bossed around by the title characters.
* TheAgeless: Looks no different from how he looked centuries ago due to being a living skeleton with no skin.
* AndIMustScream: Eternally a prisoner to Billy and Mandy. Can't violate his contract with them or else he'd ''then'' spend an eternity in the Underworld Prison.
* AntiHero: He's an anti-hero only when a greater evil threatens the world or Billy and Mandy.
* AntiVillain: He's not TheGrimReaper by choice, but because he was forced by his parents to be (though this does flip-flop around. One special revealed being a Reaper was being voted by your fellow students in ''high school''). He's also constantly getting his weight thrown around by Billy and Mandy. In fact, if he didn't suffer these two circumstances, he almost wouldn't be villainous at all. That's proven, as he's a fairly nice guy, whenever he's not on his job to take someone's life.
* BadassBoast:
** "You don't know who you're messing with, man! I am TheGrimReaper!"
** He had another good one in "Grim vs. Mom".
-->'''Grim:''' Foolish mortal! I don't think you know who I am. Let me give you a hint! (''Magics up his scythe'')
* BadassLongcoat: As expected of the Grim Reaper.
* BadlyBatteredBabysitter: His general function in the show is to suffer from having to look after Billy and Mandy.
* BewareTheNiceOnes: He's pretty nice when not reaping, though it has been made clear on several occasions that despite his attitude and butt monkey status to Billy and Mandy, he is not one to be trifled with when his patience is at an end. Just ask Jack O' Lantern.
* ButtMonkey: A lot less than Billy, but he has his moments of humiliation when he's near Mandy or a rival.
* CantStandThemCantLiveWithoutThem: On several occasions when he is given the opportunity to be free of Billy and Mandy, he finds being without them even worse than being stuck with them.
* ConditionedToAcceptHorror: In ''Big Boogey Adventure'', he's able to get Horror's Hand, which requires someone to face their worst fears, because his worst fear is [[WithFriendsLikeThese having to spend time with Billy and Mandy]], which he has to do every day anyway.
* CrouchingMoronHiddenBadass: While being pushed around by Billy and Mandy, he still knows how to get the job done as the reaper and kick a mean can of ass. He can be legitimately frightening when he wants to be.
* DarkIsNotEvil: He may be a skeleton in a black cloak who collects people's souls when they die, but at the very least he's nowhere as evil as [[VillainProtagonist Mandy]].
* DeadpanSnarker: He makes a lot of death jokes and underworld puns. He's also prone to making cutting remarks about Billy's idiocy.
* DemBones: Grim is a living skeleton under his robes. More than once, the other two protagonists have been known to take him apart in order to carry him in a backpack or other small container.
* TheDevilIsALoser: He's portrayed as an unpopular sissy even before he becomes the kids' servant. In his past, it is shown he didn't even ''want'' to be the Grim Reaper, it was just something his parents forced him to do. He took up his role in full swing in order to terrify and get revenge on those who bullied him at school.
* DimensionalCutter: He can open up portals to the underworld or other dimensions by simply ripping thin air with his scythe.
* DoesNotLikeShoes: He is rarely shown wearing shoes.
* DontFearTheReaper: Downplayed; he's an AffablyEvil PunchClockVillain who can be scary when he's ''reaping'' somebody but is otherwise a nice guy.
* DubNameChange: From Grim Reaper to "Puro Hueso" (Pure Bone) in the Latin American version, mostly referred as Huesos (Bones) by the cast. He is also nicknamed "Huesitos" (Little Bones) affectionately by Billy.
** In the Brazilian Portuguese Version, his name is "Puro Osso", which means the same thing, though unlike the Latin American version everyone calls him that, without nicknames.
* EvilHasABadSenseOfHumor: Even Mandy is sometimes taken aback by the macabre horror Grim finds delightful.
* EvilLaugh: Ah Ha, AH HA HA. AAAH HA HA HA HA HA HAAAAA
* FourTemperamentEnsemble: The Melancholic. He's overly critical of Billy, gets angry when the two kids don't listen to him, and is often emotionally insecure.
* GrumpyBear: Downplayed. He's only grumpy when he's in a bad mood.
* GlowingEyesOfDoom: Several times when he gets absolutely enraged, his eyes glow.
* TheGrimReaper: Obviously, he's the personification of death.
* HeroicComedicSociopath: Death amuses him, like when he laughs during a show when a patient flatlines, something that even Mandy looked sad to see.
* HeelFaceTurn: Subverted. After making the deal with Billy & Mandy, he's more of a follower than his own skeleton, but he was never very actively evil anyway and is still just as friendly and likely to hurt others as before.
* HisNameReallyIsBarkeep: It is implied on several occasions that his given name actually is Grim and that his last name is Reaper.
* HotBlooded: Pretty often, he's shown to be quite emotional.
* HumanityEnsues: In "Night of the Living Grim", he becomes a mortal human after succumbing to Encroaching Doom Syndrome. [[StatusQuoIsGod The episode ends with him becoming a skeleton again]].
* HypercompetentSidekick: The reason why Mandy wants to keep him and ditch Billy is because he's more intelligent and reasonable.
* HypocriticalHeartwarming: Quite a few times when it comes to Billy and Mandy, he saves them from someone trying to do something to them that he only finds okay when he's doing it to them. One of the best examples was in "Scythe 2.0":
--> '''Grim:''' You keep away from those kids! If ''anyone'' is going to have their heads, it's going to be ''me''!
* HypocriticalHumor: He often bluntly points out how stupid Billy is. And yet, it tended to hurt his feelings when Billy called him stupid for criticizing his favorite show.
* IAmBigBoned: A variation in the comics. Grim isn't thin. He's "delicately boned".
* ICallItVera: In "The Taking Tree", we learn that he calls his scythe "Jodie".
* TheKirk: More or less trying to survive being stuck with two insufferable children.
* KissedKeepsake: After Eris is tricked into kissing Grim, he says he never washed his face before and won't start doing it now.
* MistakenForPedophile: Heavily implied in "Duck!", where he gets arrested for removing his cloak in front of children while shouting "Look at my body!" in an attempt to explain to the children that he is incapable of passing gas.
* MultipleChoicePast: His many flashbacks to his past seem pretty unreliable. Possibly parodied at one point as well--two of his proposed backstories ''directly contradict each other'' in such a way that would be impossible to HandWave, {{Retcon}} or even ignore outright[[note]]in one, he wanted to be a singer but his dad wanted him to be the Grim Reaper, while in the other his dad wanted him to sing while he wanted to become the Grim Reaper[[/note]].
* NoRespectGuy: Even in the underworld, he gets no respect for his many duties as Reaper.
* NotSoAboveItAll: He tends to get swept up in Billy and Mandy's antics pretty regularly.
* OddFriendship:
** He actually manages to bond with Billy quite a bit.
** He and Mandy share a dark and macabre sense of humor, helping them to get along at times.
* OnlySaneMan: Despite being an all-powerful supernatural being hanging around a suburban neighborhood, he is much more grounded and stable than every other character.
* ParentalSubstitute: For Billy. Both of his parents are alive, but his dad is an idiot and his mom is insane, so Billy respects and admires Grim much more than either of them. He cooks and cleans for him and is quite fussy about him doing his homework, but also provides an actually respectful adult male figure in his life. Billy even says in one episode that Grim is his idol, and Grim in turn occasionally displays outright fatherly affection for him.
* PhraseCatcher: "Bonehead".
* PhysicalGod: He's the Grim Reaper, after all, so of course he would possess immortality and great powers.
* PunchClockVillain: As he himself once stated, he's just doing his job. He's also very friendly when not doing so. After all he rarely reaps people's souls before it is their time anyway.
* RageBreakingPoint: Normally subservient and kind even when being bossed around, he ''does'' have limits though; when he's finally had enough and loses it, even Mandy herself often won't mess with him.
* RealityWarper: With his scythe, he can cause all sorts of things to happen.
* ReallySevenHundredYearsOld: He was a little kid during the Stone Age.
* RedAndBlackAndEvilAllOver: His BlackCloak is red on the inside.
* ScaryBlackMan: His voice actor is black.
* ScreamsLikeALittleGirl: Depends on the episode, but he'll quite often scream in a high-pitched and feminine voice when he's scared.
* ShipperOnDeck: He teasingly ships Billy and Mandy occasionally. In "The Bubble with Billy", he even tries to get Mandy to flirt with Billy to get him to cough up the supernatural gum he swallowed.
* SinisterScythe: His scythe can do just about anything...except whack the weeds in Skarr's garden.
* SociopathicHero: He dosen't like conversing with humans, much less saving them.
* TragicVillain: PlayedForLaughs. He didn't become TheGrimReaper by choice, but because his parents wanted him to... [[MultipleChoicePast sometimes]]. Afterwards, he became a PersonOfMassDestruction. He also softens after the deal with Billy and Mandy.
* TallDarkAndSnarky: He is really tall, wears a black cloak, and isn't above making snide remarks toward Billy and Mandy.
* TooDumbToLive: If he never wagered his own freedom, he wouldn't have to put up with Billy and Mandy. The only thing he would've lost would've been an opportunity to collect a hamster's soul.
* UnexplainedAccent: Grim's Jamaican accent. His grandmother also has one, and has a Jamaican look to her to boot.
* VillainProtagonist: A surprisingly downplayed example, since he shows his evil side sporadically and often (but not always) after being provoked.
* VillainsOutShopping: Whenever he isn't ordered to kill someone, he lives a perfectly normal life.
* WellDoneSonGuy: While his backstory is a bit fluid, "Dad Day Afternoon" presents him as this, desperate to earn the approval of a father who loved country rock music more than him.
* WillfullyWeak: Deliberately avoids abusing his powers to prevent causing problems. Unfortunately for him, that's exactly what Billy and Mandy end up doing.
* WouldHurtAChild: He's been shown planning ways of escaping his deal with Billy and Mandy, typically by killing them in unusual ways.
[[/folder]]
[[folder:Billy]]
->Voiced by: Creator/RichardStevenHorvitz
[[quoteright:220:http://static.tvtropes.org/pmwiki/pub/images/billybillyandmandy_3740.png]]
A dim-witted boy who frequently causes problems due to his idiocy. Nonetheless, he's usually the most innocent and happy-go-lucky of the trio.
----
* {{Abusive Parent|s}}: To his "son", the giant spider, Jeff. (Semi-justified in that Billy is extremely stupid and has an irrational fear of spiders) Billy tries his best to squish Jeff including sending an exterminator to crush him beneath a huge cowboy boot, throwing furniture onto him, and cutting the brake cables in his car.
* AcquaintedWithEmergencyServices: In Season 2 "Educating Grim", when Billy tries to race Grim and Mandy to school, he immediately runs into the school's front sign. Cue Nurse Penbroke walking outside hold first-aid kits looking annoyed. After Billy and Mandy leave school, Billy is already covered in bandages and walking with a crutch. When Nurse Penbroke [[StepfordSmiler happily]] waits outside for Billy, he tells her he's done for today and then she releases an exhausted sigh.
-->'''Nurse Penbroke''': Oh, Billy.\\
'''Billy''': ''(cheerfully)'' Hi, Nurse Penbroke. I can't feel my legs.
* {{Adorkable}}: He's so dumb and stupid it's adorable.
* AllLovingHero: Unless you're a spider or a clown, in which case he'll try to murder you, Billy is surprisingly adept at befriending pretty much everybody, and has succeeded in ending conflicts nonviolently several times.
* AmbiguousDisorder: It's fairly obvious that Billy has genuine mental problems in addition to being extremely stupid, as shown by his bouts of psychotic, murderous rage. He may have inherited this from his mother.
* AmbiguouslyJewish: His family apparently celebrates Hanukkah in addition to Christmas, though the way he says it makes it sound like an excuse to get more presents.
* AnnoyingLaugh: He quite often lets out a ridiculous-sounding laugh.
* ArsonMurderAndJaywalking: Billy's three greatest fears are spiders, clowns, and the mailman, with the greatest fear of them all being a spider/clown/mailman hybrid.
* AsskickingEqualsAuthority: In ''A Kick in the Asgard'', he was such a good fighter that even the likes of Thor and Odin feared him, and is revealed to have became the ruler of Asgard in TheStinger of the episode.
* AxCrazy: The disorder thing? Well it can get pretty severe for a clown or a spider (for daring to be different) or for everyone if Billy is in a destructive and hyperactive mood (which he pretty much is all the time) and wields a hammer.
* BewareTheSillyOnes: Billy is often the dumbest character on the show, but he has been shown to have bouts of psychotic rage that manage to scare even Mandy.
* BlackBeadEyes: One of the few characters on the show who has eyes represented as black beads.
* BrattyHalfPint: He can sometimes become an obnoxious pest.
* BumblingSidekick: While he has moments of surprising insight or competence, he generally functions as a dim-witted lackey to either Grim or Mandy.
* ButtMonkey: He gets a lot of physical abuse.
* ChaoticStupid: When Billy takes Mandy's raw nerve, he gleefully abuses Grim, implying that a lack of courage was the only thing that stopped him from doing so before (unless the nerve also influenced his overall disposition since it was ''Mandy's''). He also has an "inner frat boy" that advises him to beat the crap out of anything he doesn't understand.
* CheerfulChild: He rarely has outbursts of rage, but when he does, his happy attitude goes away really fast.
* ChildhoodFriends: He's known Mandy since they were toddlers.
* {{Cloudcuckoolander}}: He will spout stuff that makes no sense except to him and maybe Irwin.
* CordonBleughChef: In an early episode he dreamed that he made cookie dough out of assorted junk food, then ate it raw because [[NoodleIncident he wasn't allowed to use the oven anymore]]. He also apparently eats his cereal with chili and makes his waffles with pickles. One episode has him simply put a ''live turtle'' between two pieces of bread and proudly proclaim "Now that's-a what I call a sandwich!".
* CrouchingMoronHiddenBadass:
** He was able to take on an entire alien fleet by himself, and even [[PhysicalGod Grim]] and [[TinyTyrannicalGirl Mandy]] run from him in fear when he's angry. He's a moron, but he's also very competent badass when he wants to be.
** In "Secret Snake Club", he actually becomes a CIA agent, tracking down a fugitive and exposing [[spoiler: Irwin's plans with the macrame club]].
** He singlehandedly defeated all of Asgard, Odin and the rest of the pantheon included, and he did it with a smile on his face the entire time.
** He also tried to help Hoss Delgado fight a group of zombies with nothing but a stick. Keyword tried, but he survived unscathed.
** His scheme to steal Mandy's raw nerve was remarkably clever for him: he got Grim's cooperation by pointing out that a cowardly Mandy would be unable to bully him, and got the nerve to allow him to swallow it by bribing it with a burrito that happened to be a combo of its two favorite flavors.
* TheDitz: His IQ is [[ExaggeratedTrope -5]], being outperformed in the test by a shovel and two candy bracelets (they got a positive 17).
* DropTheHammer: His WeaponOfChoice is a war hammer, which he is surprisingly skilled at wielding.
* DumbassHasAPoint: Very commonly chimes in to point out the flawed logic in Mandy or Grim's thinking, only to be dismissed as an idiot.
* DumbIsGood: Played with. While his idiocy gives him a childish innocence that allows him to befriend even the most horrible monsters and act unambiguously heroic much more frequently than the other two, [[ChaoticStupid his complete lack of self control and extremely destructive tendencies]] lead him to be arguably the ''most'' dangerous of the three.
* EveryoneHasStandards: Even he thinks Fred Fredburger is annoying.
* ExtremeOmnivore: He enjoys eating boogers, toenail clippings, and (it's heavily implied) cat and dog poo, the last of which he actually uses as steak sauce.
* FieryRedhead: He has red hair and can get pretty frightening when he's angry.
* FluffyTamer: His specialty is befriending supernatural horrors that help the trio out in a pinch.
* FourTemperamentEnsemble: The Sanguine. He's often overly optimistic, good-natured, and will frequently help people that he knows are having problems.
* FriendToAllLivingThings: Although in the case of spiders, he doesn't love them back.
* FutureBadass: In the Big Boogey Adventure. Most notably, in the five minutes of screentime he gets, he almost never says or does a single dumb thing. In fact, he somehow managed to time travel back in time without the use of a nearby inoperable Time Gate. And this is [[TheDitz Billy]] we're talking about. It makes one wonder what did Mandy do to make Billy become this way... Not a dumb thing apart from his last words
-->[[spoiler:'''Billy''': I should have known it was you all along]].
* GagNose: Has a bulbous pink nose that is often bruised or even knocked off his face.
* {{Gasshole}}. Lampshaded by his mom, his first words were in fact gas attacks.
* HeManWomanHater: He insists that Mandy and other girls not be allowed on his baseball team... despite them soundly being better at it than he is. Even having Mindy outperform his team didn't change Billy's mind. Leading to Mandy and Grim discussing whether they should hang lampshade or not. They decide [[TheDitz Billy]] is not worth that trouble.
* HiddenDepths:
** He is shown to dance well, defeat multiple enemies in combat - sometimes without even touching them - and is prone to simple-minded wisdom that actually make a whole lot of sense.
** He's also occasionally surprisingly eloquent for an idiot.
** Despite his immense stupidity, he's perfectly literate.
* IdiotHero: Far more traditionally heroic than [[TokenEvilTeammate Mandy]] and [[AffablyEvil Grim]], but also much more idiotic and twice as destructive.
* ImprobablyLowIQ: -5. Again, a shovel and two candy bracelets are smarter than he is.
* InformedJudaism: The Christmas episode states he's Jewish, but it's never brought up again.
* InnocentlyInsensitive: Whenever he insults Grim, it's mostly when he's acting as Mandy's parrot. On his own, he usually speaks highly of Grim, but also acts like a spoiled and bratty kid.
* IronButtmonkey: Suffers a lot of horrific injuries he somehow recovers from to the point that he could be considered TheChewToy of the show.
* JerkassBall: As with Mandy, Billy has his moments of being insensitive and rude, too.
* JerkassHasAPoint: In "Wrath of the Spider Queen" Billy delivers a massive KickTheDog [[TheReasonYouSuckSpeech speech]] to Jeff where he tries to convey just how much he hates the spider. It was incredibly excessive compared to what triggered it but Billy did raise the point that somehow Jeff ''still'' hadn't figured out the depths of just how much Billy hates spiders.
* JerkWithAHeartOfGold: He's somewhat insensitive and unempathetic but he does have his kind moments.
* {{Keet}}: He's always excited.
* KindheartedSimpleton: Downplayed, while he causes a lot of trouble, it's more often out of his stupidity rather than malice. He generally comes off as well-intentioned.
* LackOfEmpathy: Especially apparent when interacting with his "son", Jeff, not noticing or caring that Jeff loves him and only wants his love to be reciprocated.
* LethallyStupid: ''Everything'' Billy does within the show will inevitably result in mass destruction and chaos, especially when magical artifacts like Grim's scythe are involved.
* LikeParentLikeChild: He's both stupid (like his father) and mentally unstable (like his mother).
* MadeOfIron: He has suffered many injuries throughout the show's run (several of which result in his skin being torn open) and absolutely none of them were permanent. A few of his injuries involve ''having his entire face being blown or torn off''!
* MajorInjuryUnderreaction: Most of the amusing injuries he sustains, he makes little to no reaction to any of them, which isn't really much of a surprise since he's probably too stupid to realize he got injured.
* MeaningfulName: His name means "desire".
* TheMentallyDisturbed: He does the unusual combo of being both moronic and completely insane.
* MoralityPet:
** For [[AntiHero Mandy]]. When she's not bullying him or helping him for her own personal gain, she treats him as a scolding mother would treat her son.
** He's also one to [[SociopathicHero Grim]], who seems almost affectionate towards him at times.
** He's one to [[spoiler: [[AntiVillain Mrs. Claus]] in the ChristmasEpisode, after apparently being the only person in centuries to offer her any help with her multiple duties at the North Pole (without messing up). In fact, Billy's the one who stops her from taking over the world by appealing to her humanity, and by turning Santa back to normal and getting him to apologize for dumping all the work on her.]]
* TheMcCoy: Stupid and impulsive.
* NeverMyFault: In "Billy and Mandy's Jacked-Up Halloween", he indirectly causes all the conflict because he borrowed Grim's scythe, but blatantly shirks responsibility after Jack O'Lantern is defeated and Grim gets his scythe back.
-->'''Billy''': You know, Grim, none of this would have happened if you didn't loan me the scythe in the first place.
* ObliviouslyEvil: Sure he "abuses" his "son" Jeff despite the latter's attempts to flatter him, but that's only because Billy has irrational and psychotic arachnophobia. ''Underfist'' reveals that this was the result of [[spoiler: the true antagonist dangling spiders in front of Billy when Bill was a baby ForTheEvulz]].
* OddFriendship: He's a complete moron whose two closest friends are an obscenely dark and nihilistic girl and the humanoid personification of death.
* OneManArmy: He's occasionally shown to be almost disturbingly powerful when angry, to the point where even Mandy is terrified of him.
* OnlyFriend: He appears to be the only person Mandy actively hangs out with.
* PinkGirlBlueBoy: The blue boy to Mandy's pink girl. He wears blue jeans and a shirt with a blue stripe on it, while Mandy wears a pink dress.
* ThePollyanna: One episode has Billy chronicle his daily experience. It's surprisingly depressing. Not that he notices. His life is honestly pretty horrible, but he remains a blissfully oblivious idiot regardless. Somewhat deconstructed in that in the same episode it is shown that Billy is fully aware of how horrible his life is and it bothers him greatly to the point of acting out in an insane fashion or trying to force others to be happy just so they cannot ruin his happiness anymore.
* RapidFireYes: He would often respond with "yeahyeahyeahyeah..." when he's excited.
* RedOniBlueOni: He's the red oni to Mandy's blue oni. He is impulsive and emotional while Mandy's responsible and stoic.
* ScreamsLikeALittleGirl: His screams sound girly.
* ShesNotMyGirlfriend: Says this word by word when Grim assumed such about him and Mandy in the second episode.
* SimpleMindedWisdom: He makes intelligent observations this more often than he should, making you second guess his stupidity.
* SmarterThanYouLook: Make no mistake Billy is genuinely as stupid as he comes across but he's typically more tuned in to things than he appears.
* StrongFamilyResemblance: He looks a lot like his father and grandfather.
* TokenGoodTeammate: He's the nicest of the trio when compared to Grim and Mandy at least, which admittedly doesn't say much.
* TookALevelInDumbass: By the end of the show, Billy's become an Epic-Level dumbass.
* TooSpicyForYogSogoth: The one and only time Eris attempts to use him as an agent of spreading chaos ends with her having a nervous breakdown. Too put it simply: Billy is too ChaoticStupid for the ''Goddess of Chaos'' to handle.
* UncannyFamilyResemblance: His father, paternal aunt, grandfather, and grandmother all have a GagNose like him (though in Aunt Sis's case it's not pink). In an episode where he gets stuck in prehistoric times and falls in love with a cavegirl, it's shown in the present that ''everyone'' has his nose as a result of being his descendant.
* UnstoppableRage: When he's in this mode, even ''Mandy'' is scared of him. He more or less becomes the most powerful character on the show when in this state, as he always curbstomps his opponent.
* VillainProtagonist: The mildest example of the three, though it must be said that he can be as horrible as Mandy towards Grim and the whole world though in a mindless way. He usually gets a pass due to being mentally stunted and can be harmless when he isn't actively AxCrazy. He's also the only one of the three who ever has heroic motivations, though he tends to do more harm than good when acting on them.
* WhyDidItHaveToBeSnakes: Hates spiders with a passion, which creates some rift between him and Jeff, a spider who sees Billy as his father due to hatching his egg.
* WithFriendsLikeThese: Billy's not that great of a friend to Irwin; he once stopped Sperg from giving Irwin a wedgie... So that ''Billy'' could do it for him and become a bully which he decided would make him cool.
[[/folder]]
[[folder:Mandy]]
->Voiced by: Music/GreyDeLisle
[[quoteright:220:http://static.tvtropes.org/pmwiki/pub/images/mandybillyandmandy_9481.png]]
The polar opposite of Billy; a merciless, cynical and manipulative little girl who frequently abuses Grim's power to get what she wants. She almost never smiles and terrifies almost everyone around her, her parents included. Unlike Billy, she's stable, sane and intelligent.
----
* TheAce: She's hypercompetent at pretty much everything and has almost the entire universe grovelling at her feet. It makes her plans for world domination all the more terrifying due to how ''plausible'' they are.
* ActionGirl: She's the most consistently competent in a fight out of the three of them.
* AllGirlsWantBadBoys: She falls in LoveAtFirstSight with a goth artist boy who Billy befriends in "Crushed". Her reaction is surprisingly adorable. The revelation that he's a poser makes her immediately lose interest in him.
* AmoralAttorney: Her Halloween costume in "Grim or Gregory?" was a lawyer with monster hands for "rending human flesh".
* AnimeHair: Her hair sticks up at the back and curls a little, resembling devil horns.
* AntiHero: She is this at her best moments, and straight up VillainProtagonist at her worst. Despite technically being one of the good guys, it's all about her and follows PragmaticVillainy.
* ArbitrarySkepticism: Despite living in a world where supernatural elements are commonplace, and being friends with the Grim Reaper himself, Mandy adamantly refuses to believe in such things as Santa Claus and the Tooth Fairy.
* BadassNormal: She's capable of scaring the crap out of others just by ''looking'' at them. That's definitely not something an ordinary little girl without any psychical powers can do.
* BewareTheQuietOnes: A stoic kid who is very sadistic.
* BigDamnHeroes: Despite her goal on world domination, she saved the world multiple times. Only because she wants to conquer the world on her own terms.
* BigBad: She's the main antagonist in ''The Grim Adventures Of The Kids Next Door''.
* BigOlEyebrows: Has two large eyebrows.
* BrightIsNotGood: She may be the inverted version of a PerkyGoth. She wears brightly-colored clothes and has a Gothic and morose personality.
* CaptainObvious: She is often treated as a genius for pointing out the obvious because more than half of the time she is surrounded by blundering fools. An example is her reminding Grim to use his scythe to get them out of a tight spot and him enthusiastically calling it a great idea.
* CardCarryingVillain: She makes no excuse for her being evil, and absolutely ''refuses'' not to be seen as anything but a malevolent being.
* TheComicallySerious: She's always overly serious, but is so, in a slapstick and humorous manner.
* CreepyChild: She tricked The Grim Reaper into eternal servitude, using him as her maid and his powers for personal gain, and faces down everything from the Boogeyman to Cthulhu with nothing more than a wry comment. She also never smiles, ever, because doing so would cause the universe to implode. She was also able to take over a large evil brain/alien when it ate her brain.
* DeadpanSnarker: She quite often makes snide remarks about everyone else.
* DeathGlare: She has a constant glare which intimidates anyone.
* TheDreaded: Almost ''everyone'' get scared of her just by using words, and she has already taken over the world because everyone fears her. This goes even to the point where ''Grim'' of all people has nightmares of her.
* EmotionlessGirl: She seems to have only three major emotions: Indifference, disgust, and anger. This trope was exaggerated over time thanks to Flanderization. In season 1, she spoke with more emotion in her voice and was far more prone to looking surprised or worried at the strange things she came across. She also ''smiled'' at the end of the first episode and the universe didn't fall apart.
* EnfantTerrible: Young enough and psychopathic enough to qualify.
* EvenEvilHasStandards:
** She wants to rule the world and [[DystopiaJustifiesTheMeans turn it into a dystopia]], but she is not okay with cheating.
** Quite a few of the disturbing and grotesque things that happen to Billy leave her as speechless and horrified as anyone would. Like him growing a sentient growth in "Billy's Growth Spurt", turning into chocolate and eating himself alive in "Chocolate Sailor", and breaking and twisting his own neck in "Order of the Peanuts".
* EvenEvilHasLovedOnes: She does care about Grim and Billy, and once fell in love with a gothic guy (though she wasn't proud of it). She does seem to have a somewhat normal relationship with her parents (even straining herself to tell her dad she loves him for Father's Day while also giving him Grim's services for the day.) While she also does push them around somewhat, she is shown to be very surprised when her parents admit that they're quite scared of her.
* EvilGenius: She's able to manipulate almost every sentient villain and monster for her own gain, and God help you if you dare try to cross her.
* EvilHero: PlayedStraight. She's one of the main characters and fights against evil, but she herself is far from being a straight hero.
* {{Flanderization}}:
** From simply an apathetic, snarky kid with a HairTriggerTemper and a bossy streak to an [[EmotionlessGirl emotionless]], evil, and totally sadistic psychopath trying to take over the world.
** Her competence was wildly amplified; she went from a smart little girl who could think quick in a pinch to an EvilGenius who not only can pretty much fix or undo anything by just appearing on the scene, but owns everyone apparently.
* FourTemperamentEnsemble: The Choleric. She's task-focused, harsh, and ill-tempered.
* FlatEarthAtheist: She is rendered immune to the Tooth Fairy's powers by revealing, to his face, that she doesn't believe in him.
* FluffyTheTerrible: She's a tiny little girl in black Mary Jane's who almost always has blonde hair shaped like devil horns and wears pink outfits with flowers on them. She's also the scariest being in the universe.
* GaggingOnYourWords: As revealed in "Sickly Sweet," Mandy is such a {{Jerkass}} that even something as simple as saying "please" is nearly impossible for her.
* GeniusBruiser: She is a strong LittleMissBadass who is able to battle monsters with ease, and has a notably superior intelligence, being able to understand complex theories of the world and using her wits and and manipulation skills to get her way.
* {{Goth}}: General consensus is that she's pretty much a Lone Psycho Goth, albeit one that dresses in an ironic fashion.
* GothGirlsKnowMagic: PlayedWith. In contrast to her appearance she has a cynical and dark personality befitting a {{Goth}}, and does not have any inherent skill at magic, but sporadically gains temporary supernatural and magical powers in episodes.
* GreaterScopeVillain: She's never the main villain barring the KND crossover, but she is responsible for enslaving Grim, leading to pretty much all of the supernatural occurrences in Endsville. And while she always stops them, it is explicitly because she plans on conquering the world herself, which she is shown to have done in the BadFuture.
* GuileHeroine: She can take down foes both mortal and immortal in seconds.
* HairDecorations: Wears a black headband.
* HatesBeingTouched: Do not touch her unless you wish to be bitten or punched.
* HiddenDepths:
** The prospect of living a life of quiet desperation is ''the only thing'' that can shake Mandy to her core.
** She seems to actually care for Grim and Billy, as seen in "Big Boogie Adventure" when she was upset when it seemed that Billy may actually have been killed by the Kraken.
* HijackingCthulhu:
** In "Little Rock of Horror", a [[BrainFood brain-eating]] [[EldritchAbomination alien monster]] with a [[Music/{{Voltaire}} familiar singing voice]] has been spending the whole episode being fed by Billy. When Mandy confronts it, it sucks out her brain.... it painfully dies off and its aura immediately changes to resemble Mandy. Her only explanation is that her brain and mind were[[TooSpicyForYogSothoth too "spicy".]]
** Likewise she does this to the "Delightful Reaper" in the KND crossover when she realizes it was too powerful for Kids Next Door's weaponry and ''willingly'' let it assimilate her. Like in the above example, her will takes over the countless others that made up the Delightful Reaper and it takes on her appearance.
* HornedHairdo: Her hairdo is shaped like a pair of horns, making her look fittingly demonic given her demonic personality.
* HumiliationConga: The episode "Zip Your Fly!" is a big instant of suffering a series of undignified predicaments for Mandy. After she uses Grim's magical zipper to take her head off, a fly gets in the way when she zips it back. She switches heads with it, having to move with a comically small body. She then gets stuck in fly paper and Harold attempts to flush her down the toilet. She lost half the zipper in garbage and ended up eating an entire junk yard to find it.
* HypocriticalHeartwarming: She would never let Billy do any of the things that she does.
* ImprobableWeaponUser: In the Creator/CartoonNetwork game "The Fight Before Christmas", she uses a toy hammer, a toy plane, a doll[[note]]which she hurls like a throwing star[[/note]], a fistful of marbles and a pan of popcorn as weapons against the evil toys overrunning Santa's workshop.
* InformedDeformity: In ''My Fair Mandy,'' a skilled make-over artist was shocked by her appearance, at first mistaking her for an angry tree stump.
* IronicName: Her name means "adorable" or "lovable", despite her bitter and cynical attitude.
* IronLady: Her ultimate goal in life is "[....] [[DesperatelyLookingForAPurposeInLife to do something]] [[YoungConqueror important]]!" She eventually is elected president of the United States, and in the distant future, will rule the world.
* {{Jerkass}}: Develops more and more into being a heartless and unsympathetic jerk after every season. Her beast transformation in "Sickly Sweet" even makes her sound like a ''literal'' ass (the animal). Hell, that episode shows that even trying to do anything nice is nearly impossible for Mandy, to the point where she has physical difficulty just trying to say "Please."
* JerkWithAHeartOfJerk: While she does do heroic actions like saving Billy from himself or whatever MonsterOfTheWeek they're up against, as well as saving the whole planet, Mandy will ''always'' have a selfish motive in mind no matter what -- but...
* JerkWithAHeartOfGold: ...she is also shown to care about Grim and Billy, having small and rare moments where she's shown to be worried about their well-being. Another proof is that the real reason why she doesn't smile, is because the world would end if she did so.
* KarmaHoudini: RuleOfFunny usually dictates that she gets off scot-free -- [[KarmaHoudiniWarranty but there are a few occasions where she's outwitted and beaten]].
* KickTheDog: She can be incredibly cruel, especially to Grim, Billy, and Irwin.
** As if taking Gregory's Halloween candy in "Grim or Gregory?" wasn't enough, she also admits not to care that she made the kid cry when Billy admonishes her for it.
** Another rather cruel moment from Mandy occurs in "The Greatest Love Story Ever Told Ever", where she reveals to Irwin and Nergal Jr. that [[TheChessmaster she knew they would fight over her and ruin the Valentine's Day school dance and that this was exactly what she wanted to happen]], rationalizing that [[EvilIsPetty if she can't enjoy Valentine's Day, no one else should]].
** Stealing the Golden Nose of Chipotle for her own ends and leaving Grim, Billy, and Harold behind in Mexico in "El Dia de Los Muertos Estupidos".
* KickTheSonOfABitch: Whenever she torments [[AlphaBitch Mindy]] or [[BarbaricBully Sperg]], the harshness of her actions is usually offset by how rude and cruel they were being.
* LackOfEmpathy: Whatever empathy she has is locked away in the cold dark recesses of her soul.
* LittleMissBadass: Wears pink, is blonde, snarks almost constantly, and makes the Grim Reaper her personal bitch in the first episode.
* LittleMissSnarker: This line pretty much exemplifies it:
-->''"Power tools in the dark? Darwin should be paying you two goons royalties."''
* MaddenIntoMisanthropy: It's implied that two things helped complete Mandy's metamorphosis into the cynical tyrant we all know and love: Mindy's inane, meaningless prattle, and having to deal with the perpetually moronic Billy every single day of her life.
* ManipulativeBitch: She manipulated the Grim Reaper, Eris, Hoss, and sometimes even Irwin to do her bidding.
* NobleDemon: She's TheDreaded, brooding, anti-social and occasionally evil but she's also loyal and stays close to her friends, always keeps her word and never cheats.
* TheNoseless: She has no nose, but she does have nostrils.
* NotSoStoic: Some things ''can'' get under her skin, if rarely. Even she wasn't immune to being called ugly or unattractive.
* OddFriendship: She willingly hangs out with Billy, despite the two of them being polar opposites.
* OffModel: She looks decidedly... wrong in ''Underfist''.
* OneWingedAngel: Her future self from the episode "Mandy the Merciless", where she is a giant worm.
* OnlySaneWoman: Trades roles with Grim as the most reasonable and rational of the group, depending on the episode.
* PerkyGoth: Completely {{Inverted}}; she dresses like a standard little girl, but embodies the Lone Psycho Goth stereotype.
* PerpetualFrowner: It's mentioned on more than one occasion that she ''never'' smiles; in fact, it's revealed in "My Fair Mandy" that if she ''does'' smile, it will cause a RealityBreakingParadox.
* PetTheDog:
** She will occasionally meditate on the possibility that she actually cares about Grim and Billy...[[IgnoredEpiphany but ultimately dismiss the errant thought.]]
** In "Halls of Time", she seems legitimately horrified at the idea of Irwin being erased from existence.
** Accepting Saliva (in her own way).
* PinkGirlBlueBoy: The pink girl to Billy's blue boy. She wears a pink dress, while Billy wears blue jeans and a shirt with a blue stripe.
* PinkMeansFeminine: Averted. Mandy usually wears a pink dress, but she isn't that feminine.
* PragmaticVillainy: Oh she'll help save the world alright, but only because she needs it in pristine condition for when ''she'' conquers it herself. In the same vein, she'll always help defeat the MonsterOfTheWeek, but only because the world is ''hers'' and she won't let anyone else take it from her.
* PsychoticSmirk: By way of EarlyInstallmentWeirdness, but before it became a major defining trait of hers that she never smiles, she had a couple evil grins in response to Grim's suffering in "Meet the Reaper" and "Look Alive!".
* RaisedByWolves: Played for laughs. Her parents claim that wolves ''came'' to raise her as her own when she was born.
* RedOniBlueOni: She's the blue oni to Billy's red oni. She is stoic and responsible while Billy is impulsive and emotional.
* SlapstickKnowsNoGender: Though rarer than with Billy, she's not immune to physical comedy. Whether that's being [[AshFace burned to a crisp]] by Cerberus in "Mandy Bites Dog", or being [[CoveredInGunge covered in snot]] twice after Grim sneezes on her in "Night of the Living Grim".
* SociopathicHero: She enjoys people's pain and is one of the main protagonists.
* TheSpock: Intelligent and deadpan.
* TheStoic: She never smiles fully at all. It's for the best.
* SugarAndIcePersonality: She is actually shown to be somewhat caring and even passionate in some episodes despite usually coming off as cold and uncaring.
* SurroundedByIdiots: As seen in CaptainObvious above, she seems the only person with a brain most of the time.
* TinyTyrannicalGirl: She's a little girl who doesn't take guff from anyone. In fact, almost everyone in the show is afraid of her.
* TokenEvilTeammate: The only hero who's more evil than a demon from the underworld.
* TomboyWithAGirlyStreak: For someone so decidedly unfeminine, she has a tendency towards pink and girly things. While there's an underlying hint of irony to it, she seems to legitimately like them.
* TookALevelInJerkass: Mandy became more hostile and disrespectful towards her friends in later seasons.
* UnsympatheticComedyProtagonist: She has no positive qualities beyond being intelligent and competent, both of which she uses to make the world a bad place.
* VillainsOutShopping: Whenever she isn't scheming, she's just spending time, with Grim and Billy at their house.
* VillainProtagonist: She's one of the main characters and is so evil that she makes the personification of death look like a nice guy in comparison.
* WhenSheSmiles...she tears the very fabric of time, space, and reality apart. For the sake of humanity, it's better that she doesn't smile. Although in some earlier episodes, this trope is played straight.
* WhyDidItHaveToBeSnakes: In "Attack of the Clowns", both Billy and Grim claim that she's afraid of ''professional figure skaters,'' though she suspiciously denies this, only saying she merely distrusts how they skate.
* WiseBeyondHerYears: She may be a real bitch but she's EASILY the smartest character on the show.
* YouGoGirl:
** Billy wouldn't allow Mandy in his baseball team because she's a girl. Trying to teach him a lesson, she disguised herself as a boy named "Manfred" by donning a baseball cap.
** Billy and Irwin made a racing team and wouldn't allow Mandy in because she's a girl so she started her own team with Grim, who was rejected from Billy and Irwin's for being a skeleton. [[SubvertedTrope Pud'n won]].
[[/folder]]
->Voiced by: Greg Eagles
[[quoteright:220:http://static.tvtropes.org/pmwiki/pub/images/grim_804.png]]
The GrimReaper who is fated to be Billy and Mandy's "best friend" forever after losing a limbo contest to them.
----
* AbusiveParents: Depending on the episode. His mom always complains about his lack of enthusiasm for his job and his dad would never talk to him and always listened to country music.
* AcquaintedWithEmergencyServices: He has this relationship with the nursing staffs at the retirement homes when he comes for the elderly residents, as shown in Season 5 "Home of the Ancients".
-->'''Gloria''': Hi, Grim.\\
'''Grim''': S'up, Gloria.\\
'''Gloria''': Aw. Are you here for Mr. Silverman?\\
'''Grim''': No. That's next week.
* {{Adorkable}}: Despite being the shadow of death itself, he has his fair share of adorably dorky moments throughout the series, especially during the flashback in ''Wrath of the Spider Queen''.
* AffablyEvil: Is remarkably polite when he isn't putting his scythe to work or getting bossed around by the title characters.
* TheAgeless: Looks no different from how he looked centuries ago due to being a living skeleton with no skin.
* AndIMustScream: Eternally a prisoner to Billy and Mandy. Can't violate his contract with them or else he'd ''then'' spend an eternity in the Underworld Prison.
* AntiHero: He's an anti-hero only when a greater evil threatens the world or Billy and Mandy.
* AntiVillain: He's not TheGrimReaper by choice, but because he was forced by his parents to be (though this does flip-flop around. One special revealed being a Reaper was being voted by your fellow students in ''high school''). He's also constantly getting his weight thrown around by Billy and Mandy. In fact, if he didn't suffer these two circumstances, he almost wouldn't be villainous at all. That's proven, as he's a fairly nice guy, whenever he's not on his job to take someone's life.
* BadassBoast:
** "You don't know who you're messing with, man! I am TheGrimReaper!"
** He had another good one in "Grim vs. Mom".
-->'''Grim:''' Foolish mortal! I don't think you know who I am. Let me give you a hint! (''Magics up his scythe'')
* BadassLongcoat: As expected of the Grim Reaper.
* BadlyBatteredBabysitter: His general function in the show is to suffer from having to look after Billy and Mandy.
* BewareTheNiceOnes: He's pretty nice when not reaping, though it has been made clear on several occasions that despite his attitude and butt monkey status to Billy and Mandy, he is not one to be trifled with when his patience is at an end. Just ask Jack O' Lantern.
* ButtMonkey: A lot less than Billy, but he has his moments of humiliation when he's near Mandy or a rival.
* CantStandThemCantLiveWithoutThem: On several occasions when he is given the opportunity to be free of Billy and Mandy, he finds being without them even worse than being stuck with them.
* ConditionedToAcceptHorror: In ''Big Boogey Adventure'', he's able to get Horror's Hand, which requires someone to face their worst fears, because his worst fear is [[WithFriendsLikeThese having to spend time with Billy and Mandy]], which he has to do every day anyway.
* CrouchingMoronHiddenBadass: While being pushed around by Billy and Mandy, he still knows how to get the job done as the reaper and kick a mean can of ass. He can be legitimately frightening when he wants to be.
* DarkIsNotEvil: He may be a skeleton in a black cloak who collects people's souls when they die, but at the very least he's nowhere as evil as [[VillainProtagonist Mandy]].
* DeadpanSnarker: He makes a lot of death jokes and underworld puns. He's also prone to making cutting remarks about Billy's idiocy.
* DemBones: Grim is a living skeleton under his robes. More than once, the other two protagonists have been known to take him apart in order to carry him in a backpack or other small container.
* TheDevilIsALoser: He's portrayed as an unpopular sissy even before he becomes the kids' servant. In his past, it is shown he didn't even ''want'' to be the Grim Reaper, it was just something his parents forced him to do. He took up his role in full swing in order to terrify and get revenge on those who bullied him at school.
* DimensionalCutter: He can open up portals to the underworld or other dimensions by simply ripping thin air with his scythe.
* DoesNotLikeShoes: He is rarely shown wearing shoes.
* DontFearTheReaper: Downplayed; he's an AffablyEvil PunchClockVillain who can be scary when he's ''reaping'' somebody but is otherwise a nice guy.
* DubNameChange: From Grim Reaper to "Puro Hueso" (Pure Bone) in the Latin American version, mostly referred as Huesos (Bones) by the cast. He is also nicknamed "Huesitos" (Little Bones) affectionately by Billy.
** In the Brazilian Portuguese Version, his name is "Puro Osso", which means the same thing, though unlike the Latin American version everyone calls him that, without nicknames.
* EvilHasABadSenseOfHumor: Even Mandy is sometimes taken aback by the macabre horror Grim finds delightful.
* EvilLaugh: Ah Ha, AH HA HA. AAAH HA HA HA HA HA HAAAAA
* FourTemperamentEnsemble: The Melancholic. He's overly critical of Billy, gets angry when the two kids don't listen to him, and is often emotionally insecure.
* GrumpyBear: Downplayed. He's only grumpy when he's in a bad mood.
* GlowingEyesOfDoom: Several times when he gets absolutely enraged, his eyes glow.
* TheGrimReaper: Obviously, he's the personification of death.
* HeroicComedicSociopath: Death amuses him, like when he laughs during a show when a patient flatlines, something that even Mandy looked sad to see.
* HeelFaceTurn: Subverted. After making the deal with Billy & Mandy, he's more of a follower than his own skeleton, but he was never very actively evil anyway and is still just as friendly and likely to hurt others as before.
* HisNameReallyIsBarkeep: It is implied on several occasions that his given name actually is Grim and that his last name is Reaper.
* HotBlooded: Pretty often, he's shown to be quite emotional.
* HumanityEnsues: In "Night of the Living Grim", he becomes a mortal human after succumbing to Encroaching Doom Syndrome. [[StatusQuoIsGod The episode ends with him becoming a skeleton again]].
* HypercompetentSidekick: The reason why Mandy wants to keep him and ditch Billy is because he's more intelligent and reasonable.
* HypocriticalHeartwarming: Quite a few times when it comes to Billy and Mandy, he saves them from someone trying to do something to them that he only finds okay when he's doing it to them. One of the best examples was in "Scythe 2.0":
--> '''Grim:''' You keep away from those kids! If ''anyone'' is going to have their heads, it's going to be ''me''!
* HypocriticalHumor: He often bluntly points out how stupid Billy is. And yet, it tended to hurt his feelings when Billy called him stupid for criticizing his favorite show.
* IAmBigBoned: A variation in the comics. Grim isn't thin. He's "delicately boned".
* ICallItVera: In "The Taking Tree", we learn that he calls his scythe "Jodie".
* TheKirk: More or less trying to survive being stuck with two insufferable children.
* KissedKeepsake: After Eris is tricked into kissing Grim, he says he never washed his face before and won't start doing it now.
* MistakenForPedophile: Heavily implied in "Duck!", where he gets arrested for removing his cloak in front of children while shouting "Look at my body!" in an attempt to explain to the children that he is incapable of passing gas.
* MultipleChoicePast: His many flashbacks to his past seem pretty unreliable. Possibly parodied at one point as well--two of his proposed backstories ''directly contradict each other'' in such a way that would be impossible to HandWave, {{Retcon}} or even ignore outright[[note]]in one, he wanted to be a singer but his dad wanted him to be the Grim Reaper, while in the other his dad wanted him to sing while he wanted to become the Grim Reaper[[/note]].
* NoRespectGuy: Even in the underworld, he gets no respect for his many duties as Reaper.
* NotSoAboveItAll: He tends to get swept up in Billy and Mandy's antics pretty regularly.
* OddFriendship:
** He actually manages to bond with Billy quite a bit.
** He and Mandy share a dark and macabre sense of humor, helping them to get along at times.
* OnlySaneMan: Despite being an all-powerful supernatural being hanging around a suburban neighborhood, he is much more grounded and stable than every other character.
* ParentalSubstitute: For Billy. Both of his parents are alive, but his dad is an idiot and his mom is insane, so Billy respects and admires Grim much more than either of them. He cooks and cleans for him and is quite fussy about him doing his homework, but also provides an actually respectful adult male figure in his life. Billy even says in one episode that Grim is his idol, and Grim in turn occasionally displays outright fatherly affection for him.
* PhraseCatcher: "Bonehead".
* PhysicalGod: He's the Grim Reaper, after all, so of course he would possess immortality and great powers.
* PunchClockVillain: As he himself once stated, he's just doing his job. He's also very friendly when not doing so. After all he rarely reaps people's souls before it is their time anyway.
* RageBreakingPoint: Normally subservient and kind even when being bossed around, he ''does'' have limits though; when he's finally had enough and loses it, even Mandy herself often won't mess with him.
* RealityWarper: With his scythe, he can cause all sorts of things to happen.
* ReallySevenHundredYearsOld: He was a little kid during the Stone Age.
* RedAndBlackAndEvilAllOver: His BlackCloak is red on the inside.
* ScaryBlackMan: His voice actor is black.
* ScreamsLikeALittleGirl: Depends on the episode, but he'll quite often scream in a high-pitched and feminine voice when he's scared.
* ShipperOnDeck: He teasingly ships Billy and Mandy occasionally. In "The Bubble with Billy", he even tries to get Mandy to flirt with Billy to get him to cough up the supernatural gum he swallowed.
* SinisterScythe: His scythe can do just about anything...except whack the weeds in Skarr's garden.
* SociopathicHero: He dosen't like conversing with humans, much less saving them.
* TragicVillain: PlayedForLaughs. He didn't become TheGrimReaper by choice, but because his parents wanted him to... [[MultipleChoicePast sometimes]]. Afterwards, he became a PersonOfMassDestruction. He also softens after the deal with Billy and Mandy.
* TallDarkAndSnarky: He is really tall, wears a black cloak, and isn't above making snide remarks toward Billy and Mandy.
* TooDumbToLive: If he never wagered his own freedom, he wouldn't have to put up with Billy and Mandy. The only thing he would've lost would've been an opportunity to collect a hamster's soul.
* UnexplainedAccent: Grim's Jamaican accent. His grandmother also has one, and has a Jamaican look to her to boot.
* VillainProtagonist: A surprisingly downplayed example, since he shows his evil side sporadically and often (but not always) after being provoked.
* VillainsOutShopping: Whenever he isn't ordered to kill someone, he lives a perfectly normal life.
* WellDoneSonGuy: While his backstory is a bit fluid, "Dad Day Afternoon" presents him as this, desperate to earn the approval of a father who loved country rock music more than him.
* WillfullyWeak: Deliberately avoids abusing his powers to prevent causing problems. Unfortunately for him, that's exactly what Billy and Mandy end up doing.
* WouldHurtAChild: He's been shown planning ways of escaping his deal with Billy and Mandy, typically by killing them in unusual ways.
[[/folder]]
[[folder:Billy]]
->Voiced by: Creator/RichardStevenHorvitz
[[quoteright:220:http://static.tvtropes.org/pmwiki/pub/images/billybillyandmandy_3740.png]]
A dim-witted boy who frequently causes problems due to his idiocy. Nonetheless, he's usually the most innocent and happy-go-lucky of the trio.
----
* {{Abusive Parent|s}}: To his "son", the giant spider, Jeff. (Semi-justified in that Billy is extremely stupid and has an irrational fear of spiders) Billy tries his best to squish Jeff including sending an exterminator to crush him beneath a huge cowboy boot, throwing furniture onto him, and cutting the brake cables in his car.
* AcquaintedWithEmergencyServices: In Season 2 "Educating Grim", when Billy tries to race Grim and Mandy to school, he immediately runs into the school's front sign. Cue Nurse Penbroke walking outside hold first-aid kits looking annoyed. After Billy and Mandy leave school, Billy is already covered in bandages and walking with a crutch. When Nurse Penbroke [[StepfordSmiler happily]] waits outside for Billy, he tells her he's done for today and then she releases an exhausted sigh.
-->'''Nurse Penbroke''': Oh, Billy.\\
'''Billy''': ''(cheerfully)'' Hi, Nurse Penbroke. I can't feel my legs.
* {{Adorkable}}: He's so dumb and stupid it's adorable.
* AllLovingHero: Unless you're a spider or a clown, in which case he'll try to murder you, Billy is surprisingly adept at befriending pretty much everybody, and has succeeded in ending conflicts nonviolently several times.
* AmbiguousDisorder: It's fairly obvious that Billy has genuine mental problems in addition to being extremely stupid, as shown by his bouts of psychotic, murderous rage. He may have inherited this from his mother.
* AmbiguouslyJewish: His family apparently celebrates Hanukkah in addition to Christmas, though the way he says it makes it sound like an excuse to get more presents.
* AnnoyingLaugh: He quite often lets out a ridiculous-sounding laugh.
* ArsonMurderAndJaywalking: Billy's three greatest fears are spiders, clowns, and the mailman, with the greatest fear of them all being a spider/clown/mailman hybrid.
* AsskickingEqualsAuthority: In ''A Kick in the Asgard'', he was such a good fighter that even the likes of Thor and Odin feared him, and is revealed to have became the ruler of Asgard in TheStinger of the episode.
* AxCrazy: The disorder thing? Well it can get pretty severe for a clown or a spider (for daring to be different) or for everyone if Billy is in a destructive and hyperactive mood (which he pretty much is all the time) and wields a hammer.
* BewareTheSillyOnes: Billy is often the dumbest character on the show, but he has been shown to have bouts of psychotic rage that manage to scare even Mandy.
* BlackBeadEyes: One of the few characters on the show who has eyes represented as black beads.
* BrattyHalfPint: He can sometimes become an obnoxious pest.
* BumblingSidekick: While he has moments of surprising insight or competence, he generally functions as a dim-witted lackey to either Grim or Mandy.
* ButtMonkey: He gets a lot of physical abuse.
* ChaoticStupid: When Billy takes Mandy's raw nerve, he gleefully abuses Grim, implying that a lack of courage was the only thing that stopped him from doing so before (unless the nerve also influenced his overall disposition since it was ''Mandy's''). He also has an "inner frat boy" that advises him to beat the crap out of anything he doesn't understand.
* CheerfulChild: He rarely has outbursts of rage, but when he does, his happy attitude goes away really fast.
* ChildhoodFriends: He's known Mandy since they were toddlers.
* {{Cloudcuckoolander}}: He will spout stuff that makes no sense except to him and maybe Irwin.
* CordonBleughChef: In an early episode he dreamed that he made cookie dough out of assorted junk food, then ate it raw because [[NoodleIncident he wasn't allowed to use the oven anymore]]. He also apparently eats his cereal with chili and makes his waffles with pickles. One episode has him simply put a ''live turtle'' between two pieces of bread and proudly proclaim "Now that's-a what I call a sandwich!".
* CrouchingMoronHiddenBadass:
** He was able to take on an entire alien fleet by himself, and even [[PhysicalGod Grim]] and [[TinyTyrannicalGirl Mandy]] run from him in fear when he's angry. He's a moron, but he's also very competent badass when he wants to be.
** In "Secret Snake Club", he actually becomes a CIA agent, tracking down a fugitive and exposing [[spoiler: Irwin's plans with the macrame club]].
** He singlehandedly defeated all of Asgard, Odin and the rest of the pantheon included, and he did it with a smile on his face the entire time.
** He also tried to help Hoss Delgado fight a group of zombies with nothing but a stick. Keyword tried, but he survived unscathed.
** His scheme to steal Mandy's raw nerve was remarkably clever for him: he got Grim's cooperation by pointing out that a cowardly Mandy would be unable to bully him, and got the nerve to allow him to swallow it by bribing it with a burrito that happened to be a combo of its two favorite flavors.
* TheDitz: His IQ is [[ExaggeratedTrope -5]], being outperformed in the test by a shovel and two candy bracelets (they got a positive 17).
* DropTheHammer: His WeaponOfChoice is a war hammer, which he is surprisingly skilled at wielding.
* DumbassHasAPoint: Very commonly chimes in to point out the flawed logic in Mandy or Grim's thinking, only to be dismissed as an idiot.
* DumbIsGood: Played with. While his idiocy gives him a childish innocence that allows him to befriend even the most horrible monsters and act unambiguously heroic much more frequently than the other two, [[ChaoticStupid his complete lack of self control and extremely destructive tendencies]] lead him to be arguably the ''most'' dangerous of the three.
* EveryoneHasStandards: Even he thinks Fred Fredburger is annoying.
* ExtremeOmnivore: He enjoys eating boogers, toenail clippings, and (it's heavily implied) cat and dog poo, the last of which he actually uses as steak sauce.
* FieryRedhead: He has red hair and can get pretty frightening when he's angry.
* FluffyTamer: His specialty is befriending supernatural horrors that help the trio out in a pinch.
* FourTemperamentEnsemble: The Sanguine. He's often overly optimistic, good-natured, and will frequently help people that he knows are having problems.
* FriendToAllLivingThings: Although in the case of spiders, he doesn't love them back.
* FutureBadass: In the Big Boogey Adventure. Most notably, in the five minutes of screentime he gets, he almost never says or does a single dumb thing. In fact, he somehow managed to time travel back in time without the use of a nearby inoperable Time Gate. And this is [[TheDitz Billy]] we're talking about. It makes one wonder what did Mandy do to make Billy become this way... Not a dumb thing apart from his last words
-->[[spoiler:'''Billy''': I should have known it was you all along]].
* GagNose: Has a bulbous pink nose that is often bruised or even knocked off his face.
* {{Gasshole}}. Lampshaded by his mom, his first words were in fact gas attacks.
* HeManWomanHater: He insists that Mandy and other girls not be allowed on his baseball team... despite them soundly being better at it than he is. Even having Mindy outperform his team didn't change Billy's mind. Leading to Mandy and Grim discussing whether they should hang lampshade or not. They decide [[TheDitz Billy]] is not worth that trouble.
* HiddenDepths:
** He is shown to dance well, defeat multiple enemies in combat - sometimes without even touching them - and is prone to simple-minded wisdom that actually make a whole lot of sense.
** He's also occasionally surprisingly eloquent for an idiot.
** Despite his immense stupidity, he's perfectly literate.
* IdiotHero: Far more traditionally heroic than [[TokenEvilTeammate Mandy]] and [[AffablyEvil Grim]], but also much more idiotic and twice as destructive.
* ImprobablyLowIQ: -5. Again, a shovel and two candy bracelets are smarter than he is.
* InformedJudaism: The Christmas episode states he's Jewish, but it's never brought up again.
* InnocentlyInsensitive: Whenever he insults Grim, it's mostly when he's acting as Mandy's parrot. On his own, he usually speaks highly of Grim, but also acts like a spoiled and bratty kid.
* IronButtmonkey: Suffers a lot of horrific injuries he somehow recovers from to the point that he could be considered TheChewToy of the show.
* JerkassBall: As with Mandy, Billy has his moments of being insensitive and rude, too.
* JerkassHasAPoint: In "Wrath of the Spider Queen" Billy delivers a massive KickTheDog [[TheReasonYouSuckSpeech speech]] to Jeff where he tries to convey just how much he hates the spider. It was incredibly excessive compared to what triggered it but Billy did raise the point that somehow Jeff ''still'' hadn't figured out the depths of just how much Billy hates spiders.
* JerkWithAHeartOfGold: He's somewhat insensitive and unempathetic but he does have his kind moments.
* {{Keet}}: He's always excited.
* KindheartedSimpleton: Downplayed, while he causes a lot of trouble, it's more often out of his stupidity rather than malice. He generally comes off as well-intentioned.
* LackOfEmpathy: Especially apparent when interacting with his "son", Jeff, not noticing or caring that Jeff loves him and only wants his love to be reciprocated.
* LethallyStupid: ''Everything'' Billy does within the show will inevitably result in mass destruction and chaos, especially when magical artifacts like Grim's scythe are involved.
* LikeParentLikeChild: He's both stupid (like his father) and mentally unstable (like his mother).
* MadeOfIron: He has suffered many injuries throughout the show's run (several of which result in his skin being torn open) and absolutely none of them were permanent. A few of his injuries involve ''having his entire face being blown or torn off''!
* MajorInjuryUnderreaction: Most of the amusing injuries he sustains, he makes little to no reaction to any of them, which isn't really much of a surprise since he's probably too stupid to realize he got injured.
* MeaningfulName: His name means "desire".
* TheMentallyDisturbed: He does the unusual combo of being both moronic and completely insane.
* MoralityPet:
** For [[AntiHero Mandy]]. When she's not bullying him or helping him for her own personal gain, she treats him as a scolding mother would treat her son.
** He's also one to [[SociopathicHero Grim]], who seems almost affectionate towards him at times.
** He's one to [[spoiler: [[AntiVillain Mrs. Claus]] in the ChristmasEpisode, after apparently being the only person in centuries to offer her any help with her multiple duties at the North Pole (without messing up). In fact, Billy's the one who stops her from taking over the world by appealing to her humanity, and by turning Santa back to normal and getting him to apologize for dumping all the work on her.]]
* TheMcCoy: Stupid and impulsive.
* NeverMyFault: In "Billy and Mandy's Jacked-Up Halloween", he indirectly causes all the conflict because he borrowed Grim's scythe, but blatantly shirks responsibility after Jack O'Lantern is defeated and Grim gets his scythe back.
-->'''Billy''': You know, Grim, none of this would have happened if you didn't loan me the scythe in the first place.
* ObliviouslyEvil: Sure he "abuses" his "son" Jeff despite the latter's attempts to flatter him, but that's only because Billy has irrational and psychotic arachnophobia. ''Underfist'' reveals that this was the result of [[spoiler: the true antagonist dangling spiders in front of Billy when Bill was a baby ForTheEvulz]].
* OddFriendship: He's a complete moron whose two closest friends are an obscenely dark and nihilistic girl and the humanoid personification of death.
* OneManArmy: He's occasionally shown to be almost disturbingly powerful when angry, to the point where even Mandy is terrified of him.
* OnlyFriend: He appears to be the only person Mandy actively hangs out with.
* PinkGirlBlueBoy: The blue boy to Mandy's pink girl. He wears blue jeans and a shirt with a blue stripe on it, while Mandy wears a pink dress.
* ThePollyanna: One episode has Billy chronicle his daily experience. It's surprisingly depressing. Not that he notices. His life is honestly pretty horrible, but he remains a blissfully oblivious idiot regardless. Somewhat deconstructed in that in the same episode it is shown that Billy is fully aware of how horrible his life is and it bothers him greatly to the point of acting out in an insane fashion or trying to force others to be happy just so they cannot ruin his happiness anymore.
* RapidFireYes: He would often respond with "yeahyeahyeahyeah..." when he's excited.
* RedOniBlueOni: He's the red oni to Mandy's blue oni. He is impulsive and emotional while Mandy's responsible and stoic.
* ScreamsLikeALittleGirl: His screams sound girly.
* ShesNotMyGirlfriend: Says this word by word when Grim assumed such about him and Mandy in the second episode.
* SimpleMindedWisdom: He makes intelligent observations this more often than he should, making you second guess his stupidity.
* SmarterThanYouLook: Make no mistake Billy is genuinely as stupid as he comes across but he's typically more tuned in to things than he appears.
* StrongFamilyResemblance: He looks a lot like his father and grandfather.
* TokenGoodTeammate: He's the nicest of the trio when compared to Grim and Mandy at least, which admittedly doesn't say much.
* TookALevelInDumbass: By the end of the show, Billy's become an Epic-Level dumbass.
* TooSpicyForYogSogoth: The one and only time Eris attempts to use him as an agent of spreading chaos ends with her having a nervous breakdown. Too put it simply: Billy is too ChaoticStupid for the ''Goddess of Chaos'' to handle.
* UncannyFamilyResemblance: His father, paternal aunt, grandfather, and grandmother all have a GagNose like him (though in Aunt Sis's case it's not pink). In an episode where he gets stuck in prehistoric times and falls in love with a cavegirl, it's shown in the present that ''everyone'' has his nose as a result of being his descendant.
* UnstoppableRage: When he's in this mode, even ''Mandy'' is scared of him. He more or less becomes the most powerful character on the show when in this state, as he always curbstomps his opponent.
* VillainProtagonist: The mildest example of the three, though it must be said that he can be as horrible as Mandy towards Grim and the whole world though in a mindless way. He usually gets a pass due to being mentally stunted and can be harmless when he isn't actively AxCrazy. He's also the only one of the three who ever has heroic motivations, though he tends to do more harm than good when acting on them.
* WhyDidItHaveToBeSnakes: Hates spiders with a passion, which creates some rift between him and Jeff, a spider who sees Billy as his father due to hatching his egg.
* WithFriendsLikeThese: Billy's not that great of a friend to Irwin; he once stopped Sperg from giving Irwin a wedgie... So that ''Billy'' could do it for him and become a bully which he decided would make him cool.
[[/folder]]
[[folder:Mandy]]
->Voiced by: Music/GreyDeLisle
[[quoteright:220:http://static.tvtropes.org/pmwiki/pub/images/mandybillyandmandy_9481.png]]
The polar opposite of Billy; a merciless, cynical and manipulative little girl who frequently abuses Grim's power to get what she wants. She almost never smiles and terrifies almost everyone around her, her parents included. Unlike Billy, she's stable, sane and intelligent.
----
* TheAce: She's hypercompetent at pretty much everything and has almost the entire universe grovelling at her feet. It makes her plans for world domination all the more terrifying due to how ''plausible'' they are.
* ActionGirl: She's the most consistently competent in a fight out of the three of them.
* AllGirlsWantBadBoys: She falls in LoveAtFirstSight with a goth artist boy who Billy befriends in "Crushed". Her reaction is surprisingly adorable. The revelation that he's a poser makes her immediately lose interest in him.
* AmoralAttorney: Her Halloween costume in "Grim or Gregory?" was a lawyer with monster hands for "rending human flesh".
* AnimeHair: Her hair sticks up at the back and curls a little, resembling devil horns.
* AntiHero: She is this at her best moments, and straight up VillainProtagonist at her worst. Despite technically being one of the good guys, it's all about her and follows PragmaticVillainy.
* ArbitrarySkepticism: Despite living in a world where supernatural elements are commonplace, and being friends with the Grim Reaper himself, Mandy adamantly refuses to believe in such things as Santa Claus and the Tooth Fairy.
* BadassNormal: She's capable of scaring the crap out of others just by ''looking'' at them. That's definitely not something an ordinary little girl without any psychical powers can do.
* BewareTheQuietOnes: A stoic kid who is very sadistic.
* BigDamnHeroes: Despite her goal on world domination, she saved the world multiple times. Only because she wants to conquer the world on her own terms.
* BigBad: She's the main antagonist in ''The Grim Adventures Of The Kids Next Door''.
* BigOlEyebrows: Has two large eyebrows.
* BrightIsNotGood: She may be the inverted version of a PerkyGoth. She wears brightly-colored clothes and has a Gothic and morose personality.
* CaptainObvious: She is often treated as a genius for pointing out the obvious because more than half of the time she is surrounded by blundering fools. An example is her reminding Grim to use his scythe to get them out of a tight spot and him enthusiastically calling it a great idea.
* CardCarryingVillain: She makes no excuse for her being evil, and absolutely ''refuses'' not to be seen as anything but a malevolent being.
* TheComicallySerious: She's always overly serious, but is so, in a slapstick and humorous manner.
* CreepyChild: She tricked The Grim Reaper into eternal servitude, using him as her maid and his powers for personal gain, and faces down everything from the Boogeyman to Cthulhu with nothing more than a wry comment. She also never smiles, ever, because doing so would cause the universe to implode. She was also able to take over a large evil brain/alien when it ate her brain.
* DeadpanSnarker: She quite often makes snide remarks about everyone else.
* DeathGlare: She has a constant glare which intimidates anyone.
* TheDreaded: Almost ''everyone'' get scared of her just by using words, and she has already taken over the world because everyone fears her. This goes even to the point where ''Grim'' of all people has nightmares of her.
* EmotionlessGirl: She seems to have only three major emotions: Indifference, disgust, and anger. This trope was exaggerated over time thanks to Flanderization. In season 1, she spoke with more emotion in her voice and was far more prone to looking surprised or worried at the strange things she came across. She also ''smiled'' at the end of the first episode and the universe didn't fall apart.
* EnfantTerrible: Young enough and psychopathic enough to qualify.
* EvenEvilHasStandards:
** She wants to rule the world and [[DystopiaJustifiesTheMeans turn it into a dystopia]], but she is not okay with cheating.
** Quite a few of the disturbing and grotesque things that happen to Billy leave her as speechless and horrified as anyone would. Like him growing a sentient growth in "Billy's Growth Spurt", turning into chocolate and eating himself alive in "Chocolate Sailor", and breaking and twisting his own neck in "Order of the Peanuts".
* EvenEvilHasLovedOnes: She does care about Grim and Billy, and once fell in love with a gothic guy (though she wasn't proud of it). She does seem to have a somewhat normal relationship with her parents (even straining herself to tell her dad she loves him for Father's Day while also giving him Grim's services for the day.) While she also does push them around somewhat, she is shown to be very surprised when her parents admit that they're quite scared of her.
* EvilGenius: She's able to manipulate almost every sentient villain and monster for her own gain, and God help you if you dare try to cross her.
* EvilHero: PlayedStraight. She's one of the main characters and fights against evil, but she herself is far from being a straight hero.
* {{Flanderization}}:
** From simply an apathetic, snarky kid with a HairTriggerTemper and a bossy streak to an [[EmotionlessGirl emotionless]], evil, and totally sadistic psychopath trying to take over the world.
** Her competence was wildly amplified; she went from a smart little girl who could think quick in a pinch to an EvilGenius who not only can pretty much fix or undo anything by just appearing on the scene, but owns everyone apparently.
* FourTemperamentEnsemble: The Choleric. She's task-focused, harsh, and ill-tempered.
* FlatEarthAtheist: She is rendered immune to the Tooth Fairy's powers by revealing, to his face, that she doesn't believe in him.
* FluffyTheTerrible: She's a tiny little girl in black Mary Jane's who almost always has blonde hair shaped like devil horns and wears pink outfits with flowers on them. She's also the scariest being in the universe.
* GaggingOnYourWords: As revealed in "Sickly Sweet," Mandy is such a {{Jerkass}} that even something as simple as saying "please" is nearly impossible for her.
* GeniusBruiser: She is a strong LittleMissBadass who is able to battle monsters with ease, and has a notably superior intelligence, being able to understand complex theories of the world and using her wits and and manipulation skills to get her way.
* {{Goth}}: General consensus is that she's pretty much a Lone Psycho Goth, albeit one that dresses in an ironic fashion.
* GothGirlsKnowMagic: PlayedWith. In contrast to her appearance she has a cynical and dark personality befitting a {{Goth}}, and does not have any inherent skill at magic, but sporadically gains temporary supernatural and magical powers in episodes.
* GreaterScopeVillain: She's never the main villain barring the KND crossover, but she is responsible for enslaving Grim, leading to pretty much all of the supernatural occurrences in Endsville. And while she always stops them, it is explicitly because she plans on conquering the world herself, which she is shown to have done in the BadFuture.
* GuileHeroine: She can take down foes both mortal and immortal in seconds.
* HairDecorations: Wears a black headband.
* HatesBeingTouched: Do not touch her unless you wish to be bitten or punched.
* HiddenDepths:
** The prospect of living a life of quiet desperation is ''the only thing'' that can shake Mandy to her core.
** She seems to actually care for Grim and Billy, as seen in "Big Boogie Adventure" when she was upset when it seemed that Billy may actually have been killed by the Kraken.
* HijackingCthulhu:
** In "Little Rock of Horror", a [[BrainFood brain-eating]] [[EldritchAbomination alien monster]] with a [[Music/{{Voltaire}} familiar singing voice]] has been spending the whole episode being fed by Billy. When Mandy confronts it, it sucks out her brain.... it painfully dies off and its aura immediately changes to resemble Mandy. Her only explanation is that her brain and mind were[[TooSpicyForYogSothoth too "spicy".]]
** Likewise she does this to the "Delightful Reaper" in the KND crossover when she realizes it was too powerful for Kids Next Door's weaponry and ''willingly'' let it assimilate her. Like in the above example, her will takes over the countless others that made up the Delightful Reaper and it takes on her appearance.
* HornedHairdo: Her hairdo is shaped like a pair of horns, making her look fittingly demonic given her demonic personality.
* HumiliationConga: The episode "Zip Your Fly!" is a big instant of suffering a series of undignified predicaments for Mandy. After she uses Grim's magical zipper to take her head off, a fly gets in the way when she zips it back. She switches heads with it, having to move with a comically small body. She then gets stuck in fly paper and Harold attempts to flush her down the toilet. She lost half the zipper in garbage and ended up eating an entire junk yard to find it.
* HypocriticalHeartwarming: She would never let Billy do any of the things that she does.
* ImprobableWeaponUser: In the Creator/CartoonNetwork game "The Fight Before Christmas", she uses a toy hammer, a toy plane, a doll[[note]]which she hurls like a throwing star[[/note]], a fistful of marbles and a pan of popcorn as weapons against the evil toys overrunning Santa's workshop.
* InformedDeformity: In ''My Fair Mandy,'' a skilled make-over artist was shocked by her appearance, at first mistaking her for an angry tree stump.
* IronicName: Her name means "adorable" or "lovable", despite her bitter and cynical attitude.
* IronLady: Her ultimate goal in life is "[....] [[DesperatelyLookingForAPurposeInLife to do something]] [[YoungConqueror important]]!" She eventually is elected president of the United States, and in the distant future, will rule the world.
* {{Jerkass}}: Develops more and more into being a heartless and unsympathetic jerk after every season. Her beast transformation in "Sickly Sweet" even makes her sound like a ''literal'' ass (the animal). Hell, that episode shows that even trying to do anything nice is nearly impossible for Mandy, to the point where she has physical difficulty just trying to say "Please."
* JerkWithAHeartOfJerk: While she does do heroic actions like saving Billy from himself or whatever MonsterOfTheWeek they're up against, as well as saving the whole planet, Mandy will ''always'' have a selfish motive in mind no matter what -- but...
* JerkWithAHeartOfGold: ...she is also shown to care about Grim and Billy, having small and rare moments where she's shown to be worried about their well-being. Another proof is that the real reason why she doesn't smile, is because the world would end if she did so.
* KarmaHoudini: RuleOfFunny usually dictates that she gets off scot-free -- [[KarmaHoudiniWarranty but there are a few occasions where she's outwitted and beaten]].
* KickTheDog: She can be incredibly cruel, especially to Grim, Billy, and Irwin.
** As if taking Gregory's Halloween candy in "Grim or Gregory?" wasn't enough, she also admits not to care that she made the kid cry when Billy admonishes her for it.
** Another rather cruel moment from Mandy occurs in "The Greatest Love Story Ever Told Ever", where she reveals to Irwin and Nergal Jr. that [[TheChessmaster she knew they would fight over her and ruin the Valentine's Day school dance and that this was exactly what she wanted to happen]], rationalizing that [[EvilIsPetty if she can't enjoy Valentine's Day, no one else should]].
** Stealing the Golden Nose of Chipotle for her own ends and leaving Grim, Billy, and Harold behind in Mexico in "El Dia de Los Muertos Estupidos".
* KickTheSonOfABitch: Whenever she torments [[AlphaBitch Mindy]] or [[BarbaricBully Sperg]], the harshness of her actions is usually offset by how rude and cruel they were being.
* LackOfEmpathy: Whatever empathy she has is locked away in the cold dark recesses of her soul.
* LittleMissBadass: Wears pink, is blonde, snarks almost constantly, and makes the Grim Reaper her personal bitch in the first episode.
* LittleMissSnarker: This line pretty much exemplifies it:
-->''"Power tools in the dark? Darwin should be paying you two goons royalties."''
* MaddenIntoMisanthropy: It's implied that two things helped complete Mandy's metamorphosis into the cynical tyrant we all know and love: Mindy's inane, meaningless prattle, and having to deal with the perpetually moronic Billy every single day of her life.
* ManipulativeBitch: She manipulated the Grim Reaper, Eris, Hoss, and sometimes even Irwin to do her bidding.
* NobleDemon: She's TheDreaded, brooding, anti-social and occasionally evil but she's also loyal and stays close to her friends, always keeps her word and never cheats.
* TheNoseless: She has no nose, but she does have nostrils.
* NotSoStoic: Some things ''can'' get under her skin, if rarely. Even she wasn't immune to being called ugly or unattractive.
* OddFriendship: She willingly hangs out with Billy, despite the two of them being polar opposites.
* OffModel: She looks decidedly... wrong in ''Underfist''.
* OneWingedAngel: Her future self from the episode "Mandy the Merciless", where she is a giant worm.
* OnlySaneWoman: Trades roles with Grim as the most reasonable and rational of the group, depending on the episode.
* PerkyGoth: Completely {{Inverted}}; she dresses like a standard little girl, but embodies the Lone Psycho Goth stereotype.
* PerpetualFrowner: It's mentioned on more than one occasion that she ''never'' smiles; in fact, it's revealed in "My Fair Mandy" that if she ''does'' smile, it will cause a RealityBreakingParadox.
* PetTheDog:
** She will occasionally meditate on the possibility that she actually cares about Grim and Billy...[[IgnoredEpiphany but ultimately dismiss the errant thought.]]
** In "Halls of Time", she seems legitimately horrified at the idea of Irwin being erased from existence.
** Accepting Saliva (in her own way).
* PinkGirlBlueBoy: The pink girl to Billy's blue boy. She wears a pink dress, while Billy wears blue jeans and a shirt with a blue stripe.
* PinkMeansFeminine: Averted. Mandy usually wears a pink dress, but she isn't that feminine.
* PragmaticVillainy: Oh she'll help save the world alright, but only because she needs it in pristine condition for when ''she'' conquers it herself. In the same vein, she'll always help defeat the MonsterOfTheWeek, but only because the world is ''hers'' and she won't let anyone else take it from her.
* PsychoticSmirk: By way of EarlyInstallmentWeirdness, but before it became a major defining trait of hers that she never smiles, she had a couple evil grins in response to Grim's suffering in "Meet the Reaper" and "Look Alive!".
* RaisedByWolves: Played for laughs. Her parents claim that wolves ''came'' to raise her as her own when she was born.
* RedOniBlueOni: She's the blue oni to Billy's red oni. She is stoic and responsible while Billy is impulsive and emotional.
* SlapstickKnowsNoGender: Though rarer than with Billy, she's not immune to physical comedy. Whether that's being [[AshFace burned to a crisp]] by Cerberus in "Mandy Bites Dog", or being [[CoveredInGunge covered in snot]] twice after Grim sneezes on her in "Night of the Living Grim".
* SociopathicHero: She enjoys people's pain and is one of the main protagonists.
* TheSpock: Intelligent and deadpan.
* TheStoic: She never smiles fully at all. It's for the best.
* SugarAndIcePersonality: She is actually shown to be somewhat caring and even passionate in some episodes despite usually coming off as cold and uncaring.
* SurroundedByIdiots: As seen in CaptainObvious above, she seems the only person with a brain most of the time.
* TinyTyrannicalGirl: She's a little girl who doesn't take guff from anyone. In fact, almost everyone in the show is afraid of her.
* TokenEvilTeammate: The only hero who's more evil than a demon from the underworld.
* TomboyWithAGirlyStreak: For someone so decidedly unfeminine, she has a tendency towards pink and girly things. While there's an underlying hint of irony to it, she seems to legitimately like them.
* TookALevelInJerkass: Mandy became more hostile and disrespectful towards her friends in later seasons.
* UnsympatheticComedyProtagonist: She has no positive qualities beyond being intelligent and competent, both of which she uses to make the world a bad place.
* VillainsOutShopping: Whenever she isn't scheming, she's just spending time, with Grim and Billy at their house.
* VillainProtagonist: She's one of the main characters and is so evil that she makes the personification of death look like a nice guy in comparison.
* WhenSheSmiles...she tears the very fabric of time, space, and reality apart. For the sake of humanity, it's better that she doesn't smile. Although in some earlier episodes, this trope is played straight.
* WhyDidItHaveToBeSnakes: In "Attack of the Clowns", both Billy and Grim claim that she's afraid of ''professional figure skaters,'' though she suspiciously denies this, only saying she merely distrusts how they skate.
* WiseBeyondHerYears: She may be a real bitch but she's EASILY the smartest character on the show.
* YouGoGirl:
** Billy wouldn't allow Mandy in his baseball team because she's a girl. Trying to teach him a lesson, she disguised herself as a boy named "Manfred" by donning a baseball cap.
** Billy and Irwin made a racing team and wouldn't allow Mandy in because she's a girl so she started her own team with Grim, who was rejected from Billy and Irwin's for being a skeleton. [[SubvertedTrope Pud'n won]].
[[/folder]]
