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* AlternativeCharacterInterpretation:
** [[http://www.youtube.com/watch?v=TBrf15vZy_w Does Arnold coincidentally run into Helga all the time, or . . .]]
** Is Olga genuinely trying to be a good sister to Helga, or is she just a passive-agressive version of Jamie O? Especially after entertaining her class with stories about Helga wetting in the bed...
** Arnold's parents could be seen as MightyWhitey. Their friend Eduardo does not specify why they are the only ones who can save the village's children. Double points because they consider their mission a great reason for [[DaddyHadAGoodReasonForAbandoningYou leaving Arnold with his grandparents.]]
* AnimationAgeGhetto: Very nicely averted, in that it did eventually deal with heavier themes, but ones that young children would still be able to relate to, and it an optimistic (if not sometimes odd) way. Its urban setting is said to be a huge contributing factor.
* AwesomeMusic: Pretty much the entire musical soundtrack, courtesy of Jim Lang.
* BaseBreaker:
** Helga is '''slowly''' becoming this. Many love her backstory and complexity as well. Also see DracoInLeatherPants below. Other fans are starting to find it hard to forgive Helga's actions in "Girl Trouble", "Love and Cheese", and "Helga and the Nanny", as well performing a maybe too good of a job of keeping her [[JerkassFacade tough girl reputation]], being [[CreatorsPet the focus of way too many episodes in the later seasons,]] and/or just simply because of her treatment towards everyone (especially Arnold and Phoebe).
** Harold. You've got one half of the fanbase that will find him too [[BrattyHalfPint annoying]] and [[JerkAss obnoxious]]; [[NeverLiveItDown plus good luck]] [[MoralEventHorizon finding anyone who will forgive him]] [[KickTheDog for wrecking Pigeon Man's home.]] The other half will see him as the hilarious loveable loser.
** Rhonda. Some find her to be an annoying RichBitch while others like her for her {{Pet the Dog}} moments she gives in "Rhonda's Glasses" and "Polishing Rhonda".
** Stinky is considered entertaining or is disliked for the same reasons as Harold and Sid.
*** [[spoiler:One can argue after watching a flashback from "Helga On the Couch", that [[CreateYourOwnVillain if it wasn't for the latter three (plus Sid) teasing Helga, she and Arnold would be getting along a lot better than they do in the in series.]]]]
* BrokenBase: [[InvokedTrope Invoked.]] Nick ran an ad series for the movie that had kids acting out scenes, and then reacting to them. One ad was the "controversial" scene in which Helga confesses her love to Arnold, and all the kids said that she'd never admit it to him.
* CrazyAwesome:
** Arnold's Grandma and Grandpa.
** Also Arnold himself at the end of the episode "24 Hours To Live".
** Curly, with the emphasis on ''crazy'' (and not a "cool, kooky" crazy either. More like a "This kid needs serious mental help" crazy). To elaborate, he once broke some animals out of a zoo - ''alone''. Just because he wanted to.
** Chocolate Boy can be this, too. Apparently, he's spent so much time around chocolate that he can be used to literally sniff out Helga and Harold after they get separated following a tour at a chocolate tour (made all the more impressive, because this was several hours after the duo had been lost). Made funnier because he's literally put on a leash.
* CriticalResearchFailure: A few on ''Theatre/RomeoAndJuliet'' in "School Play":
** Everyone (including Mr. Simmons) acts as though the LastKiss is the ''only'' and there's a lot of tension about it. Romeo and Juliet actually kissed ''multiple'' times in the play[[note]]and had sex, but this is a bunch of fourth graders performing the play, so Simmons likely removed that part to keep it age appropriate[[/note]]. Additionally, in an attempt to persuade the potential Romeo actors, Simmons claims that said last kiss is "just one small scene". If by "small" he means "pivotal and plot relevant" then he's right.
** Most glaringly, Lila claims that the moral of the play is [[ThePowerOfLove "true love conquers all"]]. This couldn't be further from the truth. If anything, it was ''the opposite''; Shakespeare made a point that Romeo and Juliet were simply two infatuated teenagers and their obsession with each other completely ruins both their and their families' lives. Heck, the mere fact that Romeo and Juliet ''die'' at the end should have probably been a tip off.
* DracoInLeatherPants: Helga. In the series she is a JerkassWoobie who is [[FreudianExcuse horribly neglected by her parents]], but who also can be mean, selfish, rude (and even cruel in some instances) does many things moved by jealousy, constantly bullies other kids (not only Arnold). However, despite that, many fanfics (specially romantic fanfics) portray her almost as a saint.
** Curly to an extent, is this to fans also.
* DieForOurShip: Lila.
* EarWorm: Several, including the opening theme.
** Some notable examples: [[http://www.youtube.com/watch?v=SOjaD4v2q7M the credits theme]] and [[http://www.youtube.com/watch?v=SeSI4BulNyU Look Up]].
** [[http://www.youtube.com/watch?v=FOlJixJAhPM "I hate the snow, I hate the snow..."]]
** [[https://m.youtube.com/watch?v=HTGi1QtkE9s SimpleThings]] from ''Mr. Huynh Goes Country''.
** [[https://m.youtube.com/watch?v=lgxi8bGxYmA When life gives you lemons dance!]]
** [[https://m.youtube.com/watch?v=0wrwbPOKK48 Miss Suzie Had a Tugboat]] from ''Fishing Trip'' sung by the late Davy Jones.
** [[https://m.youtube.com/watch?v=__gzs7X3XDg The haunted train song]] from ''Haunted Train''.
* EnsembleDarkhorse:
** [[CrazyAwesome Curly]] is easily one of the most popular characters with the fandom.
** Arnold's parents: [[ActionDad Miles]] and [[ActionMom Stella]] themselves are pretty popular with the fanbase.
** Many minor and/or one-shot characters such as Chocolate Boy, Harvey the Mailman, Peapod Kid, Patricia "Big Patty" Smith, Sheena's Uncle Earl, Stoop Kid, Monkeyman, Mr. Smith, Pigeon Man, Coach Wittenberg and Bridget from the movie are pretty popular with fans as well.
** Some of Arnold's classmates such as [[GlassesGirl Phoebe]], [[ButtMonkey Eugene]], [[SpoiledSweet Lorenzo]], [[FriendtoBugs Nadine]], [[StalkerWithACrush Brainy]], and [[FragileFlower Sheena]] are fairly popular with the fans as well.
* FamilyUnfriendlyAesop: In the episode "Full Moon", Arnold sees Stinky, Sid, and Harold moon the principal, and ends up getting a month dentention because he doesn't want to be 'a rat' for telling.
---> '''Harold:''' You told him, didn't you?!
---> '''Arnold:''' (deadpan) No.
---> '''Harold:''' (in disbelief) Well, why not?!?!
---> '''Arnold:''' Because it wouldn't be right.
* FanficFuel: We have enough details about the Jungle Movie and ''The Patakis'' that many fanfic writers have written their own versions.
* FanonDiscontinuity: "Arnold Betrays Iggy", above all others; so much so that Craig Bartlett himself attempted to remove it from rotation.
* FunnyAneurysmMoment:
** At the end of "The Flood", as floodwaters surround PS 118, Principal Wartz stands on the roof of the school singing, "Way down yonder, in New Orleans..."
** In "Helga on the Couch", Mr. Simmons gets nervous when he learns that the school psychologist will be observing is class, stuttering and asking for reassurance that she will just be observing the students, and not him, the teacher. While this is a moment played for laughs when the viewer is a child, as an older viewer who knows about the above-mentioned WordOfGay, he was likely still in the closet and worried that the school psychologist would see through him and expose him, which could have disastrous backlash from the parents whose children attends P.S. 118.
** In "Curly Snaps", Curly loses his mind because he feels like he isn't respected by the other students and teachers, locks himself in the principal's office, and assaults people with dodgeballs. The episode aired half a year before the UsefulNotes/{{Columbine}} High School Massacre, when such behavior would be considered way less funny.
* HarsherInHindsight:
** It was once implied that Helga's dysfunctional home life was the end result of her sister Olga moving out (as her parents favored Olga over Helga), leading her dad to push Helga to be more like her older sister while Miriam became a covert alcoholic (or "smoothie" drinker) just to cope with dealing with a JerkAss like Bob and a bratty daughter like Helga. The episode "Helga on the Couch" revealed that Helga's been neglected by her parents since she was preschool-aged and that her secret crush on Arnold was the first time anyone has given her any sort of affection in her life.
** The episode "Rich Kid" involves the new kid Lorenzo who has a cell phone, beeper, his own laptop, etc and is basically a mini adult who needs to act like a kid. Many kids in the 2010s have their own cell phones, tablets, computers, etc and one complaint among older people is that kids are growing up too fast more than ever.
** The whole kids growing up too fast thing is also mentioned by Helga in "Helga's Makeover" when all the girls at Rhonda's slumber party are obsessed with wearing makeup and trying to look more adult. She mentions how wearing a face mask to "prevent wrinkles and signs of age" is asinine because they're only nine years old and don't have wrinkles or signs of age. She also questions wearing high-heels since they're already taller than the boys. Sadly this is TruthInTelevision even today with prepubescent girls being obsessed with makeup and acting like adults.
* JerkassWoobie:
** Oh, [[WellDoneSonGuy Helga...]]
** Jolly Olly Man, the ice cream vendor though some had a hard time understanding his frustration caused by only a boring job, and his problems keeping it which may have something to do with his jerkassery which delves into NightmareFuel. It's not good for the business if you act like a raging psychopath even with your customers. And he had [[NoSocialSkills no idea]] what's wrong with his behavior. Arnold had to teach him the basics of common courtesy. And there's also the fact he has a horrible father who constantly gives him crap for their business. Even the episode ends with the two not resorting their problems.
** Harold has his moments too in some episodes such as "Weighing Harold", where his [[KidsAreCruel ridiculed]] [[WithFriendsLikeThese by his own friends of all people for being overweight.]]
* MemeticMutation: "STOOP KID'S AFRAID TO LEAVE HIS STOOP! STOOP KID'S AFRAID TO LEAVE HIS STOOP! STOOP KID'S AFRAID TO LEAVE HIS STOOP!"
* MoralEventHorizon:
** When [[BigBad Scheck]] tries to run over Arnold, Helga, and Gerald in TheMovie.
** If not for some ExecutiveMeddling, what Harold did to Vincent's home in "Pigeon Man" would've become this for him, since originally Vincent was to [[DrivenToSuicide jump off his building in depression.]] So you can easily call this an aversion or a subversion.
** Iggy crosses the line when he forces Arnold to wear his bunny pajamas in public during the climax of his DayInTheLimelight.
* NeverLiveItDown: Iggy. In most episodes, he's simply a background character, with only one or two notable lines. "Arnold Betrays Iggy", his ADayInTheLimelight, will forever have him be known for all of the (well-deserved) negative tropes on this page.
* RonTheDeathEater: While Lila is portrayed in the series as a nice girl, many fanfics tend to demonize her, portraying her as a ManipulativeBitch. Helga's own dream also put her in this trope.
* TheScrappy:
** Lila toward the end of the series. While a few people [[RescuedFromTheScrappyHeap have come to her defense]] against some of the harsher attacks [[http://heyarnold.phpbb9.com/t191-lila-sawyer in recent years]], you'd be hard-pressed to find people that are honestly ''fans'' at this time. Inicially she does/did have a fanbase for her appearances in Seasons 2 and 3 (hell, she was actually TheWoobie when she first debuted!) It was mainly due to the RomanticPlotTumor love triangle of Seasons 4 and 5 (and accomponying DieForOurShip sentiments) that pushed her into Scrappydom.
** Iggy from the episode "Arnold Betrays Iggy". It doesn't help that the episode itself ends on the note that Iggy has gone beyond Arnold's forgiveness.
** A lot of the older kids (save for Patty and Torvald) from JerkJock Wolfgang to the Sixth Grade GirlPosse to BigBrotherBully Jamie O can be seen as this by fans for being almost complete and utter {{Jerkass}}es to Arnold and friends and getting little to no [[KarmaHoudini retribution]] for their actions.
** Gerald's little sister Timberly gets a lot of hate in fandom mainly for being really annoying and is usually hindering Arnold and Gerald's plans in any episode where she plays a key role. The best example of this is the "Chocolate Turtles" episode.
** Sid. He is a PoisonousFriend who betrays everyone at the drop of a hat, makes fun of Harold and Patty like a JerkAss, and ''everyone'' forgets he pulls the same crap over, and over, and over again. Whenever Sid gets a DayInTheLimelight, it highlights how [[CloudCuckoolander weird and off-kilter]] he is, and not in a likeable way either.
** Also, Big Bob for being a terrible father and an all-around terrible person towards his daughters and wife.
** Oskar Kokoshka for being outright lazy and being overall terrible and sexist towards his wife Suzie. And whenever he has a problem, he uses Arnold to do all the things for him. It went to the point when even [[AllLovingHero Arnold]] called him a loser. These antics also seem to make him an InUniverse Scrappy also.
** Eugene is another InUniverse scrappy; where his peers (bar Arnold) ostracize him for being a [[TheJinx jinx]] and being all around [[BornUnlucky unlucky]].
* SeasonalRot: Seasons four and five aren't considered fan favorites, mainly due to Arnold's character becoming bland and the Arnold/Helga/Lila love triangle becoming a RomanticPlotTumor (contrast to Season 3, where it only came up ''twice'' and seemed to be resolved within those two episodes!) There were still some good episodes here and there, though, particularly "Parent's Day" and "The Journal."
* ShipToShipCombat:
** Lila/Arnie vs Lila/Stinky vs Lila/Brainy.
** Stinky/Lila vs Stinky/Gloria.
** Rhonda/Curly vs Rhonda/Harold vs Rhonda/Sid.
** Harold/Patty vs Harold/Rhonda.
%% Citations require
* {{Squick}}: Arnie's snorting is really fucking gross.
%%* UnfortunateImplications: The frequent aesop that one is heartless for not returning someone's romantic interest. Be it Arnold towards Lila, Rhonda towards Curly, or Lola towards Ernie. More or less averted with Helga and Brainy and Lila and Arnold.
* ToyShip: ''Every shipping in the series.'' The most popular ones are [[BelligerentSexualTension Arnold/Helga]] and [[BetaCouple Gerald/Phoebe.]] Although they're canonically children in the show, fanfiction writers usually crank up their ages to make the story more appropriate.
* VanillaProtagonist: Arnold is the OnlySaneMan to contrast his quirky classmates and dysfunctional apartment neighbors.
* {{Wangst}}: Olga is a ''master'' of this. In "Olga Comes Home", she spends ''days'' sobbing about it in her room, with dramatic music in the background and a serious case of YourMakeupIsRunning. Even Big Bob starts to get tired of her histrionics- she only snaps out of it when Helga admits she changed her grades out of spite.
* WhatAnIdiot: Helga probably could get Arnold's interest if she was nice, but she rarely gives it a try. [[JustifiedTrope She has a rep to maintain.]] Harold even made fun of her on day one (when Arnold first noticed her) in a flashback in the episode, "Helga on the Couch".
** Arnold realizing that Iggy won't forgive him and instead of letting go, he suffered through a HumiliationConga.
** Iggy himself not forgiving Arnold.
** Stinky refusing to sign without telling the advertisers that he heard them insulting him behind his back.
* WhatDoYouMeanItWasntMadeOnDrugs: The original shorts
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