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[[quoteright:325:[[Webcomic/{{Sinfest}} http://static.tvtropes.org/pmwiki/pub/images/Sinfest_biggest_fan_7540.PNG]]]]

->''" I'' should ''want to cook ''[Mr. Belvedere]'' a simple meal. But I'' shouldn't ''want to cut into him, to tear the flesh, to wear the flesh, to be born unto new worlds where his flesh becomes my key."''
-->-- '''Deranged fan of ''Series/MrBelvedere''''', ''Series/SaturdayNightLive''

A nut who follows the main characters everywhere out of obsessive admiration, either causing trouble or just creeping them out. Extreme loony fans may go to great lengths and evil deeds to [[PsychoSupporter "help" the hero they idolize]]. They take their eventual rejection very personally. Occasionally this character will really go off the deep end and attempt to ''replace'' their hero.

This can also overlap with the StrawFan, TheCollector, the {{Yandere}}, the PoisonousFriend, and/or the StalkerWithACrush.

Compare ActorRoleConfusion, CannotTellFictionFromReality. Contrast with AscendedFanboy.

Sad (and a little scary) to say, this is ''very'' much TruthInTelevision.



[[folder:Anime & Manga]]
* ''Anime/DarkerThanBlack'':
** Played for laughs (and maybe a little [[ShipSinking torpedo aimed at shippers]]). [[SassySecretary Kiko]] is portrayed as slightly crazy anyway, but her crush on "Li" tops all other quirks. She almost jumps on him with {{squee}}, loudly insults her "rival" Kirihara, and generally attracts unnecessary attention... which is somewhat disconcerting for her hero, as "Li" is the facade identity of a lad who ''earned'' his nickname "Black {{Shinigami}}".
** Hei has another one in the {{OVA}}, Mayu, with the added bonus that she manages to connect his identities ([[BunnyEarsLawyer thereby beating out the entire police force]]) and starts [[StalkerWithACrush actively stalking him]].
* Gokudera from ''Manga/KatekyoHitmanReborn''. He frequently goes off to beat people up for Tsuna's sake, and [[StalkerWithACrush follows Tsuna around]] trying desperately to be his "Right Hand Man." Although the funny thing is that his attempt to replace the hero was actually his initial feeling, and that it's ''after'' being [[DefeatMeansFriendship defeated]] by Tsuna that he becomes his loony fan.
* [[spoiler: Kasaya's girlfriend Eri]] from ''Manga/{{Zetsuai 1989}}'' goes so over the edge that [[spoiler: she tries to stab her idol Kouji because he's about to go into retirement]].
* [[spoiler:[[StalkerWithACrush Toto Sakigami]]]] of ''Manga/DeadmanWonderland'' is apparently this toward [[spoiler:the Wretched Egg]].
* Lecto from ''Manga/MagicalXMiracle'' has a series-long obsession with Yue (as well as great admiration for Merleawe for being so close to him), to the point where things get... [[HoYay awkward]]. However, this turns out well for both of them; Lecto eventually becomes an in-series PromotedFanboy as one of Yue's top aides, and his nerdy personality quirks and stalker-like obsession settle down after Yue puts him through three years of {{Workaholic}} boot camp.
* Hayashi Rintaro, also known as Rin-rin, is the local florist on ''Manga/ShirokumaCafe''. He's also a scarily obsessive fan for pandas to the point that Panda, the resident AttentionWhore, can't stand him and all the attention that Rin-rin gives him.
* In ''Anime/YuGiOh5Ds'', the BigBad [[spoiler:[=ZONE=]]] is revealed to be a Loony Fan of [[spoiler:Yusei]]. He admired [[spoiler:Yusei]] so much that he [[spoiler:altered his own face to look like Yusei as part of his plan to emulate Yusei as much as possible in the hopes that some of Yusei's luck would rub off on him to help his plan.]]
* Being a deconstruction of the FightingSeries PlayedForLaughs, ''Manga/MutekiKanbanMusume'': Deconstructs this trope with Akihiko, who despite being abused at his childhood , has become an adult NiceGuy who is everyone’s ButtMonkey. Akihiko deeply desires to be the like the Red Ranger (from the {{Sentai}} ShowWithinAShow Star Rangers) because he is always recognized for his efforts with a HundredPercentHeroismRating. Akihiko is so found of the Red Ranger that he copies his CatchPhrase ''I’ll pay them back several times over'' and uses it in situations that doesn’t even make sense:
-->'''Akihiko:''' [[CannotTellFictionFromReality Just leave it to Star Ranger!]]\\
'''Wakana:''' ''[very confused]'' Star Ranger?\\
'''Akihiko:''' That Toshiyuki, I'll bring him back several times over.\\
'''Wakana:''' No, just once is enough.
* ''LightNovel/{{Baccano}}'': [[TalkativeLoon Graham Spectre]] to the resident PsychoForHire, Ladd Russo. [[AxCrazy Ladd]] being [[BlueAndOrangeMorality Ladd]], he doesn't mind.
* ''Manga/DeathNote'':
** [[MadLove Misa Amane]] is this to VillainProtagonist [[SerialKiller Light]] [[MagnificentBastard Yagami]], albeit a particularly dark, homicidal example; after he winds up killing the guy who killed her parents, she's more than glad to murder his enemies or endure ColdBloodedTorture to protect his identity. She's also glad to [[TheGlomp flying tackle him at unexpected intervals]], much to his dismay. A crucial part of her own backstory involves a narrow escape from a loony fan - the parallel is as lost on Misa as warnings about moral decay are on Light.
** From the LightNovel ''LightNovel/AnotherNote'', Beyond Birthday is this to L, and imitates the latter's dress and mannerisms.
* The fanbase for the titular ''Manga/DetroitMetalCity'' is made up mostly of loud, vulgar and belligerent fans who can't tell that frontman Krauser II and his insane, over-the-top antics is just a persona, and often show up around Krauser when he's out of makeup and unrecognizable to cause trouble.
* Roma Hoito from ''Manga/TokyoGhoul'', a clumsy waitress that started working at Anteiku for the chance to meet "One-Eyed Kaneki-sama". The sequel reveals her to be an even loonier fan than expected, declaring that she wants to [[spoiler: "kill" Haise because she can't stand seeing her beloved Kaneki ''happy'' and thinks he's most beautiful when his life is in ruins]].
* In ''Manga/MyHeroAcademia'', Stain is a huge fan on All Might. He attacks, maims and kills other heroes that he believes has corrupted the heroic ideal that All Might has set.

[[folder:Comic Books]]
* Jimmy "Mmy" from Creator/JhonenVasquez's ''ComicBook/JohnnyTheHomicidalManiac'', although he is considerably less insane than [[AxCrazy Nny]].
* The extradimensional imp ComicBook/BatMite in the wackier Franchise/{{Batman}} comics.
* Jenny in ''ComicBook/ThePunisherMAX'' comes across as this. After seeing Frank shot by the women she is targeting she saves him and takes him to her apartment. The scenes between them invoke ''{{Literature/Misery}}'', and Frank feels a little like her prisoner, but Jenny does nothing to stop him and the reason he can't leave is his gunshot injuries, and he patiently listens as she describes what was done to her, and sympathy for what was done to him. Jenny then has two requests: his shirt and jacket so she can become The Punisher and kill the women who hurt her, and that he stay until she finishes it. Frank feels more and more like he's trapped, and that Jenny would stop him even if he could leave, before passing out and ending up handcuffed so Jenny can show him how to torture criminals.
* In ''ComicBook/GreenLanternCorps'', Iolande's brother Ragnar was so obsessed with the Corps he murdered every potential Lantern candidate in their sector so he would end up the best candidate for the position, including his brother Stentar and Soranik Natu's partner Myrrt. When Ragnar was finally exposed, captured, and set for execution, Soranik purposefully chose to reveal that Iolande would be the new Green Lantern of Sector 1417 right before Ragnar would be beheaded. To add to this KickTheSonOfABitch moment, Ragnar made an empty admission of guilt and repentance to show he "wasn't afraid" before his execution, thinking he ''still'' had a chance to be a Lantern. The look on his face when Soranik takes out the ring, then gives it to his sister, is satisfying.
* ComicStrip/{{Nero}}: In the trilogy ''De Gelukbrenger'', ''De Verloren Zee'' and ''De Wraak van Nganga'' Nero is stalked by an obsessive fan of his comics, [[Music/WolfgangAmadeusMozart Wolfgang Amadeus]] [[UsefulNotes/MikhailGorbachev Glasnost]], who has read every album and finds everything is ''fantastic''. He does have a hidden gift that makes Nero keep him, though: he brings good luck. For instance, if he writes down the lottery numbers it will be automatically a winning combination.
* In the ''Comicbook/NewLineCinemasTalesOfHorror'' story "Copycat", the dreamstalking killer Freddy Krueger learns that the guy using his image to murder people is actually a huge fan of his, and isn't the only one. When the guy tries force him into a partnership, Freddy employs the help of another sociopathic fan of his to get rid of the copycat.
-->'''Carter:''' Dude, I totally know who you are... I worship you. Please don't kill me... I'm your biggest--\\
'''Freddy:''' Fan, I know. Lot of that going around. What kind of fucked up world is this, anyway?
* In the "Comic Book Carnage" story from ''ComicBook/HackSlash'', people connected with a new version of the in-story comic series ''Wunderkind'' (a blatant CaptainErsatz for ''[[ComicBook/{{Shazam}} Captain Marvel]]'') are violently murdered at a convention. The murders are being committed by two Loony Fan brothers who are upset about the new version being a DarkerAndEdgier ContinuityReboot.
* Harvey Comics' "New Kids on the Block" had Fanny Tweetersweet, an obsessive fan who ACTUALLY developed a radar and other technologies for the sole purpose of tracking them down.
-->'''Linkara:''' "SEEK... PROFESSIONAL HELP"

[[folder:Fan Works]]
* ''WebVideo/StupidMarioBrothers'' has the Crazy-obsessed-stalker-who-makes-you-unable-to-sleep-at-night Fan, as evidenced by her "Let's Get Hammered" Mario T-Shirt.

[[folder:Film -- Animation]]
* In ''WesternAnimation/TheIncredibles'', the villain Syndrome was once a young Loony Fan who wanted to be Mr. Incredible's sidekick, and his rejection was one of the factors that led him to become a villain, not an AscendedFanboy, as he so desperately wanted, but a GenreSavvy bad guy.
* Arguably the basis of the 1998 anime film ''Anime/PerfectBlue'' (unarguably, a Loony Fan does at least ''appear'' in the anime).

[[folder:Film -- Live-Action]]
* Edward Nygma of ''Film/BatmanForever'' was a big-time one of these for Bruce Wayne, but when Bruce turned down his offer to be a partner in his pet project (which his boss Stickley had shut down), his admiration turned to bitterness and downright loathing, turning him into the Riddler.
* In ''Film/BladesOfGlory'', Jimmy having one of these is kind of what causes the plot to kick off, but in a surprisingly non-scary way in spite of some of the creepy things that the loony fan says to him. This particular fan of his is so obsessed with the idea of having Jimmy back on the rink and is so much the type to think about these things a lot that he manages to find a loophole in the Figure Skating Championships rulebook that Jimmy then exploits.
* ''Film/BobRoberts'' has a collection of {{Loony Fan}}s (including an early Jack Black) who start off as kooky religious fanatics and then quickly upgrade to outright malicious when they assault a group of protestors outside one of his concerts. [[spoiler: One of them is implied to have shot and killed Bugs Raplin, who was exposing some of Roberts' dirty secrets until Roberts faked an assassination attempt (and the parapeligia that followed) and pinned the blame on him, and when one of the fans camped outside his house catches him walking around by a window, he immediately assumes it was a miracle instead suspecting any foul play.]]
* Played for laughs in ''Film/{{Bombshell}}'', in which glamorous Hollywood star Lola Burns has a Loony Fan who keeps popping up and telling her she has to come home to take care of their babies.
%%* The BigBad of ''Film/TheDeadPool'', Harlan Rook.
* The 2016 Indian thriller ''Fan'' has Creator/ShahRukhKhan playing both an example of this trope and the actor who he idolizes (possibly a NoCelebritiesWereHarmed version of [=SRK=] himself). The fan (a lookalike who is locally noted for staging impressions of the actor's films) goes to dark and dangerous lengths to try and impress the actor in question, and after being rebuffed, goes to extraordinary lengths to try and discredit him by assuming the actor's identity.
* Creator/RobertDeNiro's roles in ''Film/TheFan'' and ''Film/TheKingOfComedy'' fit this trope as well. In fact, the latter has two loony fans who are obsessed with the same in-universe celebrity, [=DeNiro=] just has the lead role: Rupert Pupkin mainly seems obsessed with Jerry Langford because he wants to be famous himself, while Masha (Sandra Bernhardt) is more of a traditional StalkerWithACrush type, eventually having a CaptiveDate with Langford.
* From the ''Franchise/{{Halloween}}'' series:
** The radio show callers in ''Film/HalloweenTheCurseOfMichaelMyers''.
** Harold in ''Film/HalloweenResurrection''.
** Chett in ''Film/HalloweenII2009'' (2009).
* The Kid in the ''[[Franchise/TheMatrix Matrix]]'' sequels is portrayed as a mild example of this.
* ''Franchise/StarWars'': Played scarily straight in ''Film/TheForceAwakens'' by the new antagonist, Kylo Ren. He's a fanatic of the late Darth Vader trying to live up to his legacy, even collecting his artifacts (including having procured his helmet from his funeral pyre, which he speaks to as if it was the man himself), while trying to avoid any of the redeeming features that led to [[spoiler:his grandfather's HeelFaceTurn]].
* The eponymous teddy bear of ''Film/{{Ted}}'' used to be a celebrity thanks to being a {{Living Toy|s}}. While he no longer has that status, he still has an obsessive fan named Donny, who wanted his own magical teddy bear when he was a kid. When his father denied him one, he vowed never to deny any similar request for his own son. Donny and his son Robert first attempt to buy Ted off from John, but when that didn't work out, they resort to kidnapping him.

* ''Literature/TheCulture'': A less technologically advanced civ, the GFCF, imitate the Culture and think that they are the best people in the galaxy. They don't do it very well, and although the Culture consider them vague allies, they don't take them seriously. This could be a mistake...
* OlderThanSteam: ''Literature/DonQuixote'': Sanson Carrásco presents himself as the number one fan of Don Quixote and discusses various [[SeriesContinuityError continuity errors]] with him and Sancho. However, his real goal is to help the poor, mad fool regain his sanity by following in his third quest. HilarityEnsues.
* ''Literature/HarryPotter'': Colin Creevey, just about as obnoxious a fanboy as you can imagine. He gets on Harry's nerves so much that he finds Draco's mocking of Creevey to be "both cruel and accurate".
* Taken to [[DarkerAndEdgier dark extremes]] with Annie Wilkes of Creator/StephenKing's ''{{Literature/Misery}}''. Annie is a former nurse and the biggest fan of Paul Sheldon, who writes the ''Misery'' series. She saves his life when he has a car wreck and nurses him to health. Unfortunately, Paul's latest novel gets released while Paul is in her care, and Annie finds out that Misery has been killed off. Annie doesn't take this well. [[AxeCrazy AT ALL.]]

[[folder:Live-Action TV]]
* ''Series/TheAffair'': While Noah was in prison between seasons 2 and 3, a prison guard from his Pennsylvania hometown named John Gunther becomes obsessed with Noah and envious of his success as a writer. He regularly torments (at one point even returning Noah a picture of Alison that he previously stole [[{{Squick}} covered with semen]]) and assaults Noah in prison and continues stalking him after he gets out, culminating in an attempted murder.
* ''Series/TheAmandaShow'' had Penelope Taynt (played by Amanda, herself), a nerdy fangirl and webmistress of her own Amanda fan site (which actually exists!).
* After G'Kar's personal diary is published (without his permission, as he hadn't finished it yet) as a holy book, in the fifth season of ''Series/BabylonFive'', he is hailed by his people as a prophet, gaining a following in the hundreds of thousands. Hundreds (at a minimum) of Narns travel to the station to learn at his feet, to his utter horror. He ends up ordering the Narn who created the G'Kar religious statuettes (which he despised) to leave him be and go back home. Shortly before G'Kar leaves the station for good (to get away from his followers), that Narn tries to shoot him and ends up wounding Garibaldi's fiancée by accident.
* In ''Series/{{Charmed}}'', when their secret is finally revealed, they encounter a young witch who wants to join their coven. After she breaks into their house and is promptly shut down, she doesn't take it well and ends up shooting Piper.
* ''Series/DoctorWho'': In the mini-episode [[Recap/DoctorWho2007CiNSTimeCrash "Time Crash"]], the Fifth and Tenth Doctors accidentally meet. Ten, delighted, immediately recognizes his former self, but Five takes him for an obsessive fan and is most annoyed.
* In one episode of ''{{Series/Dollhouse}}'', the title organization is hired to protect a rock star from a loony fan. Echo becomes a back-up singer, while another Active becomes a BigNameFan.
* One episode of ''Franchise/{{Dragnet}}'' involves a {{Woobie}} loony fan. Stanley Stover has had a very hard childhood of paternal abandonment and constant bullying all through school. At a young age, superhero comics and movies offered escape, and he came to identify with these superheroes completely. He had been stealing memorabilia since late grade school, but at twenty-three, he felt driven to accelerate the pace of his thefts. By this time, he was also dressing as his own secret identity, the Crimson Crusader. At the end of the episode, it was revealed that while on probation he received psychiatric help.
* Mel in ''Series/FlightOfTheConchords'' -- president and sole member of the band's fan club and relentless stalker.
* ''Series/{{Frasier}}'':
** Frasier visits one (with a StalkerShrine, no less) when he's trying to track down a tape of one of his past shows.
** In another episode, he invites his internet fanclub round to his flat, cooking an enormous buffet for them. It turns out to consist of three creepy obsessives with NoSocialSkills.
* ''Series/{{Friends}}'':
** Played for laughs in an episode, where Brooke Shields portrayed a Loony Fan stalking Joey, convinced [[YourSecretsSafeWithMeSuperman he was really the character]] he played in a soap opera (they got rid of her by convincing her that Joey was actually the EvilTwin instead).
** There was also the [[Series/HappyDays Fonzie]]-obsessed doctor who delivered the triplets.
* ''Series/ICarly'':
** Mandy. After appearing as a guest their web show, she followed Carly, Sam, and Freddie around constantly and even switched schools to be around them, which drove them crazy. Mandy eventually became obsessed with a band and seemingly moved onto to pestering them but a more recent episode showed she was back to obsessing over iCarly.
** There's Nora Dershlit, whose obsession with iCarly makes Mandy look ''sane'' by comparison. She kidnaps the iCarly crew and locks them in her basement under the delusion that they are her friends. She just gets even more AxCrazy from there...
* In ''Series/ImAlanPartridge'', Alan encounters his self-proclaimed "Biggest Fan," who starts with simple things like an autograph request and a too-long handshake and eventually reveals a Stalker Shrine filled with photos and memorabilia. He also has Alan's face tattooed across his torso.
* A recurring bit on ''Series/IZombie'' is Liv downing the brains of a mega-fan of everything from football to a TV series and soon exhibiting their passions to the extreme.
* The ''Series/JonathanCreek'' episode "Danse Macabre" featured am obsessed fan who followed a horror writer from the US to the UK and eventually [[spoiler:cut the head off her dead body and carried back to America with him]].
* In ''Series/{{Monk}}'', Creator/SarahSilverman is the equally alliterative Marci Maven, who is like this UpToEleven, to the point that she's furnished her house with furniture Monk threw out, and she's wearing his old pants. Apparently Monk also took out a restraining order against her. Amusingly this extends to minor MetaGal traits, like referring to his cases by episode title.
%%* An episode of ''Series/{{NCIS}}'' had a fan of [=McGee=]'s book series was real and start killing people that resembled his characters, who are based on people he sees. This due to the fact he read some pages that stated were trying to kill the character [=McGee=]'s character.
* ''Series/SaturdayNightLive'':
** The current page quote comes from a sketch about a support group for obsessive fans of ''Series/MrBelvedere''. They play a game called "Should and Shouldn't" which "helps keep the line between fantasy and reality a little less blurry":
-->'''Chris Farley:''' I ''should'' want to say "Hi!" to Mr. Belvedere. I ''shouldn't'' want to kidnap him and keep him in a big glass jar in my basement.\\
'''Tom Hanks:''' Okay, okay. That's good, we get that. But why? Why shouldn't you do that?\\
'''Chris Farley:''' [beat] Uh, because his breath would fog up the glass and I couldn't see him then?
** They once did a direct parody of ''{{Literature/Misery}}'' featuring Roseanne Barr as Dana Carvey's biggest fan. After Carvey announces he's retiring the Church Lady character, then gets into a car accident with John Lovitz, Barr rescues him (but apparently left Lovitz to die). When she finds out he's killed off the Church Lady, she starts trying to dress him up as her, to the point of painfully shoving orthopedic shoes on his mangled legs. They get in a fight, until Lovitz shows up completely unharmed, kills Barr, and [[spoiler: kills Carvey so he can steal the Church Lady character.]]
* An episode of music group Music/SClub7's TV series featured an annoying fan that was at first obsessed over Bradley and then later Rachel.
* Subverted in the ''Series/ShakeItUp'' episode "Copy Kat it Up", wherein a shy, socially-awkward girl named Kat seems to have a near-stalkerish obsession with the girls, especially [=CeCe=]. [[spoiler: It turns out to be a BatmanGambit to get a spot dancing on the show]].
* ''Series/{{Supernatural}}'' had Becky Rosen, a parody of some of the show's more extreme fans, who wrote incest fanfiction about Sam and Dean. She later used a LovePotion supplied by a [[DealWithTheDevil crossroads demon]] to entice Sam into marrying her. She also tied him to a bed and [[TapOnTheHead knocked him out with a waffle iron]] when he tried to escape.
* Played with in an episode of the short-lived HBO series of ''Tenacious D''. It starts with Lee, a fan who is overly-obsessed with Tenacious D, but afterwards the Tenacious D duo becomes overly-obsessed with Lee, culminating with his murder.
* Joxer from ''Series/XenaWarriorPrincess'' initially. Xena gets a handful of other "I've studied your every move!" (sometimes followed by "Now we must fight with knives!") type of meetups, but they're generally not the following-around kind of groupies.

* Music/{{Eminem}}'s "Stan" is presented as a series of letters by a Loony Fan who takes Eminem's "Slim Shady" persona to be SeriousBusiness and tries to emulate him in every way possible... up to and including tying up his girlfriend, stuffing her in his trunk and killing both of them by crashing his car. The song ends with Eminem writing back (to said fan's second letter). Eminem writes in his reply that Stan should seek help, because his case reminds him of a news story he saw about a man who killed his pregnant girlfriend and himself afterwards, [[FridgeHorror he then suddenly realizes that Stan was the man behind the murder-suicide]]. It's since given rise to the term "stan" to mean an overly-committed "fanboy" or "fangirl", especially the type who [[FandomRivalry bashes perceived rival fandoms]] to an unhinged degree, or utterly [[DracoInLeatherPants whitewashes their favourite character]] and [[RonTheDeathEater hates all the other characters]] on the show for being mean/insufficiently-worshipful to them.
* Music/LadyGaga's "Paparazzi" is about such a fan.
* In rapper Plan B's concept album "The Defamation of Strickland Banks", Strickland has a drunken one-night stand with such a fan. When he rejects her afterwards, [[WoundedGazelleGambit she tells the police that he raped her]] and he's sent to jail.
* Music/TheWhiteStripes song "Take, Take, Take" is an interesting version: Jack White describes meeting Rita Hayworth at a restaurant and acting like a complete fanboy. Every action of his (seeing her, standing close to her, talking to her, etc.) ends with the words "AND THAT WAS ALL THAT I NEEDED". After every time he says it's all he needed, he thinks of something else he needs from her, until finally she gets up and leaves. "IT WAS AS IF SHE / COULD NOT APPRECIATE / HOW COOL I WAS BEING."
* "Martin Scorsese" by Music/KingMissile. The lyrics to the song are the singer impersonating a crazed fan of Creator/MartinScorsese, shouting profane lines about how he wants to meet the director and do various violent acts to him, basically just beating him to death (or at least to a bloody pulp) while thanking him for making the greatest films he's ever seen in his life. Since this trope is a large part of what drove the plot of ''Film/TheKingOfComedy'', Scorsese was likely not chosen at random as a subject.
* In the video for the Music/RedHotChiliPeppers' "By the Way", the lead singer is kidnapped by a taxi driver and has to be rescued.
* Music/TheArrogantWorms have a song dedicated to this trope, reminding her of such things as how none of their songs are about her... except for ''this'' one. Which is ''all'' about her.
* The video for "Lego House" by Music/EdSheeran. At first it appears that Rupert Grint (who resembles Sheeran) is actually playing him in the video: he mimes the lyrics, wanders Ed's trailer and house, and during the final bridge he walks up on stage to thunderous applause...at which point security run on stage and tackle him to the ground, [[TheReveal revealing him]] to be nothing more than an obsessed fan. After this reveal the shots of Grint get more disturbing (including him [[{{Squick}} eating Ed's chewing gum]]), before it ends with him being escorted out of the venue, passing the ''real'' Ed Sheeran on the way.
* As well as the video for Music/LilyAllen's "Who'd Have Known", where she kidnaps Music/EltonJohn.
* KPop group Epik High's aptly titled [[http://www.youtube.com/watch?v=eINjPkO7w4M "Fan"]] is about a "sasaeng" ("extremely obsessive") fan who kidnaps an idol and keeps him imprisoned, watching him constantly from cameras she's installed in his room, giving him "baths" ''in the washing machine'', and eventually thwarting his attempt to burn himself alive when he's inevitably DrivenToSuicide. At the end of the video, she straps him to a rocket in order to "return him to the stars" (where, as a "star," she thinks he belongs) and accidentally ends up killing him in the process. The FridgeHorror kicks in when one realizes that the girl in the video is inspired by ''real'' sasaeng fans.
* Music/{{Rainbow}}'s "Starstruck" tells the story of a crazed fan/stalker who is desperate for "a souvenir". Everyone else seems to find it funny, but Music/RonnieJamesDio doesn't.
* [[Music/{{OFWGKTA}} Tyler, the Creator's]] song "Colossus" is a "Stan"-esque song which depicts a fan as being too inspired by him to the point of annoyance and irritation on Tyler's part. Said fan also has some DepravedHomosexual thoughts in mind.
* The narrator of [[http://www.youtube.com/watch?v=RBr4XdG6lfA ''Toy Soldiers'']] by Marianas Trench.
* Music/SarahMcLachlan based the song "Possession" on real fan mail she received. A look at the lyrics of the song will tell you that these weren't ordinary, polite fan letters. One fan filed a lawsuit against her, alleging that she had plagiarized the lyrics from letters he had written. He committed suicide before the case ever went to trial.
* Alexander Rybak's song "Leave Me Alone" is about a very obsessed fan who stalks him.
* Music/TheBloodhoundGang's song "The Ballad of Chasey Lain" is about a guy who kidnaps the titular porn star because she didn't answer his fan mail with one simple request: he wanted to [[IntercourseWithYou eat her ass]].

[[folder:Pro Wrestling]]
* Payton Banks started out as a crazed member of the audience, obsessed with Wrestling/BobbyRoode, till she joined Wrestling/{{TNA}}'s main roster after he hired her.
* Wrestling/MickieJames' original gimmick in Wrestling/{{WWE}} was as Wrestling/TrishStratus's creepy stalker fan. Oddly enough, since Trish retired, Mickie's actually developed into Trish's {{Expy}}. One might think this is continuity in action, but continuity has never been WWE's strong suit.
* Wrestling/BethPhoenix picked up one of her own with Rosa Mendez.

[[folder:Video Games]]
* Sakura Kasugano was referred to by Ken as 'Ryu's stalker', and not only does she have similar moves, her alternate costume in ''VideoGame/StreetFighterIV'' has her dress almost exactly like him (she only has the gi top an, and it still has sleeves, rolled up). Frightening.
** Although, one can make a case about whether you can call her "loony" or not, since she has the potential to train herself to improvement, and is part of her own extended group of fighters (Dan, Blanka and Karin, for starters). Her [[Comicbook/StreetFighter UDON]] version, however, runs with the "Ryu #1 fangirl" characterization to the point that she follows him around the world, comes to train under him some time after the World Warrior tournament (in the games, she's perfectly fine with Dan as a pseudo-teacher/sparring partner)[[spoiler:, and goes so far as to ''succumb to the Satsui no Hado'' if it means having enough power to save Ryu from the Illuminati.]]
* In ''VideoGame/TheElderScrollsIVOblivion'' the Adoring Fan ([[EverybodyCallsHimBarkeep no, that's his actual name]]) starts pestering you after you win the title of Arena champion. He's loud, obnoxious, and tends to flee from combat - but this is all intentional, due to him being a TakeThat to those who wanted multiplayer in the game. Unlike most examples of this trope, though, he will leave you alone if you tell him to ([[VideoGameCrueltyPotential even if you're both in]] [[{{Mordor}} Mehrunes Dagon's realm]]).
** Funnily enough, [[TheJester Cicero]] from ''VideoGame/TheElderScrollsVSkyrim'' apparently [[ShoutOut took on this persona]] for a job early in his career... in order to assassinate the Arena Grand Champion.
* ''Franchise/MassEffect'':
** Shepard gets one in ''VideoGame/MassEffect1'' by the name of Conrad Verner. Paragon Shepard can let him down gently, Renegade Shepard can physically assault him. If the player doesn't have enough charm or intimidate points to do either of the above, he'll run off and get killed trying to prove himself.
** In [[VideoGame/MassEffect2 the sequel]] he shows up again and says that you assaulted him, due to a save error that assumes you took the Renegade option. Since that point he's taken to dressing in a replica of your armor and acting like you did in the first game with side quests and looting. If you manage to talk him down, he'll go back to a normal life; if you upset him, he'll [[UndignifiedDeath fall into a sewage treatment plant's turbines]]. [[AscendedGlitch This bug gets referenced in]] ''VideoGame/MassEffect3'', where if you took the Paragon route in ''VideoGame/MassEffect1'', Conrad apologizes for having accused Shepard of pointing a gun at him (the Renegade option), saying he was just ''really'' stressed out at the time[[note]]For the record, the Paragon dialogue can be found [[https://www.youtube.com/watch?v=_pQd3pHKO4k here]]
** He shows up again in [[VideoGame/MassEffect3 the final game]], this time claiming that Cerberus is an ally of Shepard, and thus the galaxy. After being set straight, Conrad eventually reveals that he has a ''StalkerShrine'' dedicated to Shepard. Additionally, you get a bit of background to the guy: when Shepard sarcastically asks if Conrad can help build an ancient dark-energy powered device to stop the [[EldritchAbomination Reapers]], Conrad responds that he wrote his doctoral dissertation on xenotechnology and dark energy integration. Yes, you read that right; Conrad Verner is actually ''Dr.'' Conrad Verner. Later on, he TakesTheBullet meant for Shepard from an assassination attempt, possibly dying in the process, only surviving because another NPC that Shepard helped in the past replaced the bullets with blanks.
** In ''The Citadel'' DLC, Shepard is attacked by [[spoiler:an evil clone]]. During the final fight [[spoiler:the clone]] insists that they're better than Shepard. Shepard responds with "Are you kidding me? ''Conrad Verner'' is better at being me than you are!"
** Proving that some things just run in the family, ''VideoGame/MassEffectAndromeda'' has a brief (as in one non-storyline conversation) with a Miss ''Cassandra'' Verner, Conrad's brother. She claims Conrad's behaviour was so irritating she had to leave the galaxy, then turns out to be crazier than he is. Conrad at least hero worships an ''actual'' hero, where Cass worships a crime lord (and for further crazy points, has a "plan" to ingratiate herself to the woman, then phone up her brother and brag about this to him. From another galaxy. Four hundred years away.)
** And in a non-Verner example, ''Andromeda'' also has a krogan geneticist for the late Doctor Okeer, a very infamous krogan scientist. The geneticist knew him! Well, he talked to him. Once. And Okeer told him to get lost. Said geneticist is fanboyish enough to bring what he could of Okeer's work to Andromeda, and tasks Ryder with fetching it when his assistant misplaces it.
* ''VideoGame/TheSims 1'' has the Obsessed Fan, who while not quite evil can be a considerable annoyance to famous Sims.
* ''VideoGame/NoMoreHeroes2DesperateStruggle'' gives us Kimmy Howell, a fangirl of Travis Touchdown who eventually decides the only way to prove herself worthy of her crush is to ''kill'' him. Travis gives her a back-bodydrop and tells her to get over it.
* Amy Rose started out as a somewhat subdued variant of this towards Franchise/SonicTheHedgehog.
** ''VideoGame/SonicTheHedgehog2006'' brings us SONICMAN! He's so convinced he's the real Sonic, he ''challenges the real Sonic to a foot race!''
* In ''VideoGame/CrisisCore'', Sephiroth has a devoted group of fans who know what shampoo and conditioner he uses and how much. One must assume that they know this either because they're going through his trash or breaking into his home on a regular basis.
* In ''VideoGame/GrandTheftAutoViceCity'', a series of missions involves Tommy acting as bodyguard for a HairMetal band, Love Fist, after an obsessed fan attempts to kill them.
* In ''VideoGame/SaintsRow2'', the "Crowd Control" diversions have you protecting a celebrity from various crazy fans, who get more aggressive, more numerous, and better-armed at higher levels.

[[folder:Web Animation]]
* In ''WebAnimation/XRayAndVav'', we got Dragonface, a young kid who utterly idolizes our titular duo. So much so that they put a 50-foot restraining order on him before Season 2 started. Which got pushed up to ''500'' feet in ''episode 2''.

[[folder:Web Comics]]
* ''Webcomic/{{Fans}}'' (a comic which itself focused on fans of various sci-fi / fantasy shows) played with this concept when it introduced the character of Tim the Fanboy, a geeky stereotypical 'fanboy' who was a near-obsessive fan of the main characters. Unfortunately for them, once he realized that they weren't perfect, he felt betrayed and in turn betrayed them to become the 'fan' of a psychopathic time-travelling warlord who was doing her very best to wipe them out of existence.
* The fan who [[http://www.loadingartist.com/comic/my-first-convention/ wouldn't let go]] from ''Webcomic/LoadingArtist''.
* Piro and Largo's characters in the [[ShowWithinAShow Endgames]] videogame-world of ''Webcomic/MegaTokyo'' acquire a loony fan; Largo promptly [[FunnyMoments throws him off a cliff]]. As for the regular world...most of the main female characters have vast legions of stalkery fans at varying levels of creepiness (some are just obsessive, others are obsessive about collecting {{Panty Shot}}s of their idols).
* Isabelle of ''Webcomic/MenageA3'' is one of Zii (and to a lesser extent her rock band). She dresses and styles her hair exactly like Zii, wants to be called "Izz", and for some reason thinks Zii is way more rich and famous than she actually is. She also displays a lot of StalkerWithACrush tendencies, and one point admitted to Zii's face that IJustWantToBeYou (before quickly {{Verbal Backspac|e}}ing it to "be ''like'' you").
* ''Webcomic/{{Sinfest}}'':
** Seymour, an ultra-religious character who goes around chiding people for not being pious enough. God [[http://www.sinfest.net/view.php?date=2000-04-28 refers to him]] as his "loony fanboy."
** The devil [[http://www.sinfest.net/view.php?date=2001-02-01 thinks God needs a better representation]] and likes to [[http://www.sinfest.net/view.php?date=2006-10-28 make fun of him]]. He has [[http://www.sinfest.net/view.php?date=2002-10-23 his own lame-ass fanboy]], L'il Evil, as well. Who writes "[[http://www.sinfest.net/view.php?date=2006-09-08 Devil Fanfics]]".
*** Since [[IdentityAmnesia drinking from Lethe]], L'il E seems to have dropped the Loony Fan tendencies, and in fact is [[IHatePastMe sort of creeped out by his old self.]]
** Monique [[http://www.sinfest.net/view.php?date=2006-09-18 tried to play]] a crazy fangirl, but wasn't ready to go far enough to be believable, so she... ''outsourced'' this.
** A third fanboy was recently introduced for the third creator figure--the AuthorAvatar ("[[http://www.sinfest.net/view.php?date=2011-08-17 Will you sign my face?]]").
** Sinfest now has the first [[http://www.sinfest.net/view.php?date=2011-12-15 loony fangirl]] in a 'Nique's It-Girl persona's fangirl. Though, she is revealed to be a more benign example than the others after a chat with Monique.
* Mike from ''Webcomic/SomethingPositive'' before his redemption. His stunts include trying to steal a tuft of Gary Gygax's beard, breaking into Nichelle Nichols's hotel room and begging her to marry him, and somehow setting fire to Steve Jackson.
* ''Webcomic/TheSwordInterval'': The antagonist of the first arc [[spoiler:turns out to be a teenage fanboy of experienced monster hunter David Shimizu, who's recently retired. The kid summons a dangerous monster to try and get Shimizu to come out of retirement. It ends up working, but not in the way the kid wanted -- David and heroine Fall end up saving the kid from the monster he summoned. The kid is then arrested.]]

[[folder:Web Original]]
* In WebVideo/TheAngryVideoGameNerd's review of the ''Franchise/TheTexasChainsawMassacre'' game, he gets kidnapped by a crazed fan and Leatherface.
* WebVideo/TheNostalgiaCritic's Douchey [=McNitpick=], a "fan" that watched all his videos 37 times solely to find all of the Critic's mistakes and harshly call him out on them. Ironically, both are played by Creator/DougWalker.
** The reboot had Hyper Fangirl, stalking the Critic with the intent to make him love her, culminating in her holding him at hostage and forcing him at gunpoint to be her boyfriend and review a movie with her.
* ''Podcast/TheBrianAndJillShow'' had Jill portraying "Superfan Diane", a Loony Fan of Brian's from his KLOS radio show.
* Jim Sterling has taken some time in ''The WebVideo/{{Jimquisition}}'' to show some of the more... out there gifts that his fans have sent him. Such things include a rubber replica of a pornstar's fist, a dragon tongue dildo, and a gay furry porn comic book. The sex toys have been used for various jokes, but the comic was [[BrainBleach a bit]] ''[[BrainBleach too]]'' [[BrainBleach loony]].

[[folder:Western Animation]]
* ''WesternAnimation/TheAdventuresOfJimmyNeutronBoyGenius'':
** Jimmy Neutron's hyperactive best pal, Sheen is totally obsessed with Ultra Lord. He's got tons and tons of Ultra Lord merchandise, wrote the whole Ultra Lord website and firmly believes in Ultra Lord, even as a god.
** However in the ''WesternAnimation/PlanetSheen'' episode "Cutting the Ultra Lord", Sheen goes mental after being away from Ultra Lord for so long. When he rescues Nesmith and Doppy from a monster, he realizes that he doesn't need Ultra Lord anymore because on Zeenu he's [[CallBack ULTRA SHEEN]]!
* ''WesternAnimation/AdventuresOfSonicTheHedgehog'' has Sonette, who, along with changing her name, has snuck into Sonic's room while he was sleeping and stolen merchandise from him. She also is frequently seen with a piece of Sonic's chewed gum in her mouth. [[note]]Sonic had earlier claimed that he doesn't chew gum, which leads to speculation on whose gum that really is.[[/note]]
* ''WesternAnimation/{{Archer}}'' has Ruth Anne Litzenberger as his stalker when he was a sought-after Lacrosse player. Just before she was about to seduce him, she shoots Archer and jumps out the window.
* ''WesternAnimation/AvatarTheLastAirbender'':
** "[[FanNickname Foamy]]", who appears ''[[OneSceneWonder twice]]'', is one of these. His only distinguishing characteristic is how he foams at the mouth and collapses on the ground whenever Aang is nearby. Or at the very least thinks Aang is nearby; when Sokka and Katara go back to Kyoshi Island without Aang he winds up embarrassing himself and walks off in shame.
** Zuko also seems to have his own in "Nightmares and Daydreams"; she has to be carted off by his guards.
* Chessie the Autograph Hound will go through any lengths to get the autographs of WesternAnimation/TheCattanoogaCats.
* Being a Loony Fan on ''WesternAnimation/CelebrityDeathmatch'' is dangerous. In an episode where Creator/LucyLawless appeared as a guest commentator, several loony teenage fans came to the arena, including an overeager fangirl dressed like the ones in Comic Con who got into the announcing booth; she was quickly catapulted out of it with a device installed just for that purpose, impaling the popcorn guy as she landed. Later, during the Music/{{TLC}} / Music/DixieChicks match, the same fangirl excitedly volunteered when Lucy asked for help to decide which team got to choose ring theme; the decision was made by the two groups grabbing the poor fangirl by the arms and legs, then pulling until she was torn in half, then measuring the two pieces.
* ''WesternAnimation/TheCritic'' has one of these in a direct parody of ''Literature/{{Misery}}'' -- she's eventually beaten [[spoiler:[[HoistByHisOwnPetard by one of her own collectibles]], which Jay triggered by clapping]].
* Guaca in ''WesternAnimation/TheEmperorsNewSchool''. "Kuzco RULES!"
* Fan Boy of ''WesternAnimation/{{Freakazoid}}'' is another example played for laughs.
* Parodied in the ''WesternAnimation/{{Futurama}}'' episode "That's Lobstertainment", when Bender becomes the ''official'' stalker to robot actor Calculon. He does it again in ''The Beast with a Billion Backs''. Calculon asks outright if Bender's going to kill him, and Bender states that's not likely since in his mind they're friends. In the comic version, he [[SuspiciouslySpecificDenial specifically denies having broken into Calculon's house at night and transfused their oils so they'd always be together]].
* In the "Cold Slither" episode of ''WesternAnimation/GIJoeARealAmericanHero'', Scarlet, Cover Girl, and Lady Jaye ''disguised'' themselves as Loony Fans of the band to get close to them, and managed to slug the rather surprised Dreadnoks into submission when they did.
* Sebastian in the ''WesternAnimation/GeneratorRex'' episode "Rock My World". Attempts to force his favourite band back to its original roots and, when that fails, tries to kill them.
* ''WesternAnimation/GrojBand'': Kate and Allie are Groj Band's biggest (and, perhaps, only) fans. In "Group Hug", they kidnap Cory and hold him prisoner in their Groj Band shrine till he writes a song about then.
* Played for laughs in an early episode of ''WesternAnimation/HiHiPuffyAmiYumi'', "Dis-Harmony", where Ami and Yumi find themselves being followed everywhere (and we do mean ''[[TheCatCameBack everywhere]]'') by a crazy fangirl named Harmony, who would constantly remind them "I'm your #1 fan!"
* ''Westernanimation/{{Jem}}'' had a dark example in an episode where the protagonist puts some serious effort into finding Ba Nee's missing father. The Loony Fan in question was one of the three men that fit the profile (a red-haired man of a certain age who was a veteran) who was a fan of Jem and a gambling addict. He was definitely ''not'' Ba Nee's father, but learning his idol was looking for such a man caused him to shift to a {{Yandere}}-type, kidnapping Ba Nee with blackmail on his mind. (Eventually resulting in another of the three suspects - her ''actual'' father - showing up with PapaWolf intentions; it ended badly for said Loony Fan.)
* An episode of ''WesternAnimation/JimmyTwoShoes'' had a bunch of [[PandaingToTheAudience pandas]] becoming these to Heloise.
* An episode of ''WesternAnimation/KaBlam'' had to do with a fan visiting the set of the show, and constantly annoying Henry and June due to his huge obsession with them. He even wears Henry's outfit, June's sweatshirt, and even has his hair blue dyed to match June's (either that or it's natural). June constantly refers to him as "Weird Ryan from school", meaning the duo already knew him.
* ''WesternAnimation/KimPossible'':
** Kim Possible's cousin Joss admires Kim so much that she dresses completely in Kim's style, has numerous pictures of Kim plastered around her room, talks about nothing except for Kim, and even accidentally makes Kim fail the mission by trying to copy her in the middle of action. In the end she learns not to admire Kim that much, [[BrokenAesop so she starts admiring the sidekick Ron Stoppable instead.]]
** Frugal Lucre drove Dr. Drakken to distraction with his non-stop praise and commentary while they were sharing a prison cell. After they got out of prison, he found Drakken's lair and talked him into pulling a [[VillainTeamUp joint caper]].
* ''WesternAnimation/MyLittlePonyFriendshipIsMagic'':
** Rainbow Dash in a fourth season episode follows around [[spoiler:Daring Do/A.K. Yearling]], babbling constantly while the latter is trying to maintain a low profile and prevent a disaster, despite it being made quite clear that her assistance and attention are very much not wanted. The saner members of the group try to get her to leave her idol alone, but she just flies off and continues stalking her hero. By the end of the episode, she manages to get over the loony aspect of her fandom and the two become genuine friends.
** Rainbow Dash herself has two in her parents (combinated with AmazinglyEmbarrassingParents).
** Scootaloo starts to border on this in the seventh season, following Rainbow Dash's parents all over the place. Her scrapbook already contains a lock of Rainbow's mane, and she adds a chunk of a sandwich made with Rainbow's favorite recipe and one of her (used?) diapers over the course of the episode.
** The Mane Six all get a wave of them after Twilight's old Friendship Journal is published in [[Recap/MyLittlePonyFriendshipIsMagicS7E14FameAndMisfortune "Fame And Misfortune"]]. Fluttershy is harassed for supposedly having AesopAmnesia about assertiveness, Rarity breaks down when she overhears fans badmouthing her and her boutique gets boycotted, the Apples can't get any work done because they're swamped continually hosting AJ's fans who take her "your family is your friends" lesson too literally, Rainbow Dash can't go anywhere without her fans fawning over how awesome she is (even if she agrees, hearing it constantly is annoying), Pinkie Pie can't say anything without everypony laughing over how funny she is (even when she isn't going for comedy), and Twilight is quite miffed at how fans complain about her "character development" in the Journal and think that she was better before she got wings and should have stayed in Canterlot (completely ignoring the fact that the Journal is nonfiction[[note]]OK, nonfiction as far as the world of Equestria is concerned [[/note]] and that she's an actual pony).
** In [[Recap/MyLittlePonyFriendshipIsMagicS7E21OnceUponAZeppelin "Once Upon A Zeppelin"]] Twilight and her family go on a cruise together, only to soon learn that the entire cruise is princess themed and all the other passengers are big fans of her and Cadance. Twilight agrees to do all the activities asked of her as long as her family can do the activities they want to do, and soon she is forced to deal with overbearing fans cheering for her, sign autographs, and deal with a fan named Star Tracker, who won a raffle gets to spend the day with her as an [[AscendedFan honorary member of her family]], but is constantly [[NoSenseOfPersonalSpace getting too close to her]]. Once Twilight politely but firmly asserts herself though and asks to spend the rest of the cruise relaxing with her family, all the passengers immediately agree to give her some space and actually become mad at Iron Will once they learn he swindled her into spending time with them.
* Irving is so big a fan of ''WesternAnimation/PhineasAndFerb'' that he carries around a scrapbook of their adventures and often joins in their endeavors even if he's not invited. In an interesting case here, Irving started out as a one-off character but then began to recur, and shows signs of possibly becoming a SixthRanger to the boys' group of friends.
-->'''Irving:''' I got in the car when your mom stopped for gas!
* Katrina Rad in ''WesternAnimation/TheProblemSolverz'' episode "Magic Clock". She follows the group around everywhere so she can write a blog entry about them, but she's ''really'' [[{{Yandere}} crazy]] about Roba.
* One episode of ''WesternAnimation/RobotChicken'' has a sketch in which "Hannah Montana" gives an autograph to a crazed fan who then shoots her dead.
* ''WesternAnimation/SamAndMaxFreelancePolice'': Lorne, the "Friend for Life" (complete with his own musical jingle) who won't leave Sam and Max alone. This gets comes to a [[FunnyAneurysmMoment darker in retrospect]] head in "Fools Die on Friday", where Lorne highjacks a Swedish blimp and tries to crash into New York City in order to attract Sam and Max' attention.
* ''WesternAnimation/TheSimpsons'':
** Melody Juniper in episode "Flaming Moe".
--->'''Melody:''' ''[to Bart]'' I can't believe I'm playing video games with Bart Simpson. I sketched you so many times in my dream journal.
** There's also Julia, a fan of Homer's in the episode where he [[ItMakesSenseInContext becomes an opera singer]]. She [[WoundedGazelleGambit threatens to tell the police that Homer attacked her]] [[StalkerWithACrush unless he sleeps with her]], then when Homer point-blank rejects her, [[IfICantHaveYou she turns flat-out]] {{Yandere}}.
** Although not used often, it's a RunningGag that Patty and Selma are this for ''Series/MacGyver''. Some of the more prominent examples include:
*** Beating up [[WesternAnimation/TheCritic Jay Sherman]], stripping him down to his underpants and [[{{Wedgie}} hanging him by said underpants from the gutter of the roof]] for claiming that Richard Dean Anderson is gay.
*** Selma, who at the time was passionately in love with Sideshow Bob, almost declaring the wedding is off because he hates Macgyver.
*** Upon meeting Richard Dean Anderson in "Kiss, Kiss, Bang, Bangalore", they harass him incessantly, talking about how much they loved Macgyver but hated ''Series/StargateSG1'', until he snaps and confesses that he ''hated'' working on Macgyver and only did it for the money. They respond by kidnapping him and tying him to a chair, though this ends up a case of GoneHorriblyRight for them.
* ''WesternAnimation/SonicBoom'': Mark from "The Biggest Fan" is more than a little obsessed with Sonic and friends, to the point he writes "spicy" [[PortmanteauCoupleName SonAmy]] fan fiction and ''tries to hold an injured Sonic captive'' a la ''Literature/{{Misery}}''.
* ''WesternAnimation/SpongeBobSquarePants'':
** [=SpongeBob=] is like this toward famous jellyfish hunter Kevin the Sea Cucumber in the episode "I'm Your Biggest Fanatic," repeatedly invading his personal space until Kevin finally gives in to letting [=SpongeBob=] go jellyfish hunting with him and his friends. Kevin turns out to be an egotistical {{Jerkass}} who delights in humiliating [=SpongeBob=], only to have his ass handed to him when [=SpongeBob=] unexpectedly attracts the elusive King Jellyfish.
** Let's not forget how he and his pal Patrick are this to their superheroes Mermaid Man and Barnacle Boy.
--->'''Barnacle Boy:''' Holy sea cow, it's that Sponge-kid!\\
'''Mermaid Man:''' Quick lad, to the invisible boat mobile! Away!
* Ronaldo from ''WesternAnimation/StevenUniverse'' appears to have one, if [[http://keepbeachcityweird.tumblr.com/post/117212434170/i-got-a-letter-today-but-for-some-reason-it this post]] from his CharacterBlog ''Keep Beach City Weird'' is any indication (saying they would "kill someone" for a chance to meet Ronaldo).
* Rosie from ''WesternAnimation/ThomasTheTankEngine'' was this to the titular character in the episode "Thomas And The Birthday Mail". She tries blowing off steam and whistles the way Thomas does, which didn't suit well with him.
* ''WesternAnimation/TotalDrama'': Sierra claims she knows everything about the cast, "Your hopes, your fears, '''your dental records!'''"
* While most Decepticons are out for power, love fighting, or are just plain psycho or sadistic, Lugnut in ''WesternAnimation/TransformersAnimated'' follows Megatron because he completely idealizes him. His constant praise annoys even Megatron, who in one memorable scene actually gets a robot version of a TwitchyEye because Lugnut won't stop talking about how glorious he is instead of actually going outside and doing his job.
* ''WesternAnimation/WordGirl'' takes a spin on it: Glen emulates Dr. Two-Brains, completely fulfilling the trope in that he eventually tries to replace him... except that Two-Brains happens to be a villain himself.

[[folder:Real Life]]
* Music/JohnLennon was shot and killed by a deranged fan. There's a notorious photo of the fan getting his copy of ''Double Fantasy'' autographed by Lennon five hours before the murder.
* Music/{{Selena}} was fatally shot in the back by Yolanda Saldívar, an assistant who was also the manager of her fanclub.
* [[Music/{{Pantera}} Dimebag Darrell]] was shot to death on stage in 2004 by a Pantera fan who could not accept the breakup of the band (Dimebag had formed Damageplan with Vinnie Paul at that time). The killer was promptly killed on the scene by the police.
* In 1981 UsefulNotes/RonaldReagan was shot, but only wounded, by a deranged fan of Creator/JodieFoster who imitated the loony taxi driver in ''Film/TaxiDriver'', where the character supposedly rescues a teenage prostitute (played by Foster) by committing a murder.
* A deranged fan of Music/{{Bjork}} taped his own suicide on video while a song of hers played in the background, after sending her a booby-trapped parcel intended to squirt acid in her face.
* Music/JustinBieber had a Loony Fan [[http://www.huffingtonpost.com/2012/12/12/justin-bieber-murder-plot-dana-martin-kill-castrate-_n_2287292.html named Dana Martin]] who is serving a life sentence for rape and murder of a teenager when he became a fan of Bieber. Admitting having romantic feelings for him, Martin ordered two associates of his to murder and ''castrate'' Bieber with garden shears so he could own the parts of the singer he most desired. Fortunately, these would-be assassins were arrested before they could get near the singer.
* Actress Rebecca Schaeffer, who starred in the 1980s family sitcom ''My Sister Sam'', was shot to death in the front lobby of her apartment building by a deranged fan.
* Maynard James Keenan of Music/{{Tool}} is said to brandish a paintball rifle when he sees fans on his lawn simply because of his experience with Loony Fans.
* Actor Bill Mumy recounts an encounter with a deranged fan of ''Series/TheTwilightZone'' [[https://books.google.com/books?id=KZcIAQAAQBAJ&pg=PA354&lpg=PA354 here]]. Luckily, no one was physically harmed during the incident.
* Music/XJapan once tried to use loony fan behavior to its own advantage - back in TheEighties, the band would actively encourage rougher/crazy fans to assault/harass/intimidate rival/non-friendly bands and particularly hostile critics. Officially, the practice was ended around 1988-89, as Yoshiki and the other band members realized that they could lose all they had legitimately gained as musicians - especially if someone had actually gotten killed, and as of the 2008 reunion, could not have possibly been officially wanted as, by then, everyone in the band was far more socially responsible and mature. Unfortunately, ''due'' to the band's popularity, fans that are members of the {{Yakuza}} or that are [[JapaneseDelinquents bosozoku or yankii with no qualms about fighting/harassing]] or that are just plain TheMentallyDisturbed ''do'' still exist (because the band can't make them leave as fans) and will occasionally still engage in violent or harassing behavior even if said behavior isn't officially sanctioned anymore and ''is'' officially rejected.
* All KPop groups have probably went through their fair share of loony fans - in Korean, termed Sasaeng Fans - but Music/DongBangShinKi has probably got them the worst. There have been [[http://www.soompi.com/2012/03/08/list-of-crazy-actions-done-by-jyjs-sasaeng-fans-scare-netizens/ many]] [[http://www.allkpop.com/article/2011/03/tvxq-reveals-their-shocking-experience-with-sasaeng-fans reports]] of just what they've done. Even scarier when they can actually be seen in a [[http://2.bp.blogspot.com/-KodJ0DxYCpw/UD70OPv74gI/AAAAAAAAMXI/fD92akisvS8/s1600/52214070.jpg documentary]] about their private lives.
** These sasaengs would consider any type of attention - good or bad - from their oppas as something positive. They have injured them to the point of needing the hospital, but they won't care simply because 'oppa has finally noticed' them.
** [[http://www.gokpop.com/news/what-jyj-dbsks-sasaeng-fans-had-done-list-of-crazy-activities::10789.html Here's]] a list of just SOME of the things they've done.
** [[http://media.tumblr.com/tumblr_m0jq7bwtrB1qeptf3.jpg A picture]] a fan took while breaking in their dorms.
* Brazilian model and TV presenter Ana Hickmann had a run-in with one of these in 2016. He found her in a hotel, and reportedly wanted to play Russian roulette with her to see if she was "lucky in life". Police intervention resulted in the guy's death, but they couldn't prevent him from wounding Hickmann's sister.
* Music/ChristinaGrimmie, a prize winner on TV's "Series/TheVoice", was shot dead by one in 2016.
* There have been several cases of Japanese {{Otaku}}s being this to female seiyuus (well those without the stereotypical PerverseSexualLust anyway) to the point where it can reach StalkerWithACrush levels. A good example is [[http://kotaku.com/man-carrying-a-knife-storms-anime-event-in-tokyo-554352536 an incident in 2013]] where a man with a knife disrupted a screening of ''[[Anime/HyperdimensionNeptunia Hyperdimension Neptunia The Animation]]'' and demanded to see Creator/RieTanaka. Thankfully, the man was arrested and security for future events was tightened.
* The most high-class and intellectual example is probably Creator/{{Voltaire}}, who (as part of his [[ForeignCultureFetish undying love of English thinkers]]) absolutely adored Sir UsefulNotes/IsaacNewton and his work. Because both Newton and [[UsefulNotes/DichterAndDenker Gottfried Wilhelm Leibniz]] invented calculus independently at about the same time, there was a rivalry in the 18th century between their respective followers. Voltaire, as a partisan of Newton, therefore wrote a number of hackjobs on Leibniz, most famously ''Literature/{{Candide}}''. What makes this insane is that by the time Voltaire was writing, both Newton and Leibniz were long dead and Voltaire was really the only person who gave a damn about who invented calculus.
* Tennis star Monica Seles was stabbed by a crazed Steffi Graf fan who resented that Seles had overtaken Graf as the world's top-ranked female tennis player. Fortunately, Seles survived and eventually recovered enough to return to playing tennis. Unfortunately, the fan ''did'' succeed in their mission to make sure that Graf would return to the top spot in tennis as Seles was never able to fully regain the nigh-unbeatable form she had before the attack.
* Meg Turney and her boyfriend, Creator/GavinFree, [[http://time.com/5157820/gavin-free-megan-turney-home-invasion/ were victims of a home invasion]] by an armed StalkerWithACrush of hers, who was shot and killed by police before he could do any damage.
* 2017 saw this happen with an entire fanbase as some ''WesternAnimation/RickAndMorty'' fans [[https://www.theguardian.com/business/2017/oct/08/police-called-after-mcdonalds-rick-and-morty-promotion-heats-up all-but rioted after McDonald's brought their Szechuan Sauce back for a single day]] and in a limited supply, grossly underestimating demand. Since then, [=McDonald's=] has [[https://www.nbcchicago.com/news/local/McDonalds-Szechuan-Sauce-Rick-Morty-Riots-Shamrock-Shake-474828033.html promised to treat it like the Shamrock Shake]] - a once-a-year promotion similar to the [[ThemeNaming McRib]].