!!The book series provides examples of:

* AngstWhatAngst: The preteen to teenage main characters aren't nearly as psychologically affected by always having to fight monsters that are trying to kill them so often as they probably would be in real life. At the very least, there's no sign of PTSD. However, given that they have to do this for years on end, it could be safe to assume they just get desensitized by it, or as demigods are more geared to handle such things.
* AscendedFanon: Of the artwork rather than story details. The original character illustrations were infamously panned by fans which led to a lot of fan creation, with the fanbase widely considering fan artist Viria's work [[http://viria13.deviantart.com/gallery/24966739/Percy-Jackson]] far superior to the actual content. [[{{CrowningMomentOfAwesome}} Rick Riordan ended up agreeing with the fans and commissioned Viria]] to do the whole series official character artwork: http://rickriordan.com/characters/
* BigLippedAlligatorMoment: The incident with the Sphinx in the Labyrinth was either this, or an AuthorFilibuster. [[EpilepticTrees Of course, it's entirely possible that it was included because Riordan got frustrated and needed to vent some steam with his opinion on standardized testing.]]
* CrackPairing: Tons. Rachel/Nico, Thalia/Nico, Percy/Clarisse, Rachel/Luke, Apollo/Hermes[[note]]Which is actually technically possible in the [[Myth/ClassicalMythology source material]], especially given the fact that both are involved in same-sex relationships with mortals and other gods[[/note]], etc.
* CrazyAwesome:
** The [[OurCentaursAreDifferent Party Ponies]].
** Apollo.
* DieForOurShip: Rachel is frequently treated to this by Percy/Annabeth fans. It considerably lessened after the last book, however, mostly because she [[spoiler:became the new Oracle]].
* DracoInLeatherPants: [[spoiler: Luke Castellan.]]
* EnsembleDarkhorse:
** Nico di Angelo gets the most love in this category, going from cute, annoying kid to an emo badass over the course of the series.
** Fandom still showers attention on his sister, Bianca di Angelo, too. Never mind that she [[spoiler: dies in her introductory book. Many fanfics explore either her life after death or her life in a "What if?" scenario should she have lived.]]
** The twins, Artemis and Apollo, also get a lot of love, despite their very minor appearances. Quite a few fanfics are dedicated to them.
** Similar to the above, the Hunters of Artemis get a lot of attention in fanfic, especially notable considering that very few members are named. Artemis's lieutenant, Zoë Nightshade, is especially popular.
** [[ThirdOptionLoveInterest Calypso]] has quite the following, and avoids the DieForOurShip treatment that Rachel first suffered. Many rejoiced when [[spoiler: she returned in the sequel series.]]
* EvenBetterSequel:
** Most agree that the books got better with each installment. ''The Battle of The Labyrinth'' had even more awesome moments and CharacterDevelopment in comparison to the already strong ''Titan's Curse''.
** ''The Last Olympian'', big time.
* EvenTheGuysWantHim: The descriptions of Luke are pretty generous. And seeing as they're told from Percy's point of view...
* FanPreferredCouple: While Percy/Annabeth is still dominant, there are still rather decently sized fandoms for Percy/Luke, Percy/Nico, Percy/Artemis, Apollo/Hermes, Poseidon/Athena and Percy/Thalia.
* FoeRomanceSubtext: Luke and pretty much everyone. Particularly Percy, Thalia, Annabeth, and (if you squint) Grover.
* FunnyAneurysmMoment: Percy and Nico's first meeting is a pretty funny scene where Percy saves Nico's life and Nico proceeds to talk his ear off about mythology. It's significantly harsher after [[spoiler:''Series/TheHeroesOfOlympus'' showed a glimpse of Nico's POV in that scene --basically, he saw Percy as a mythical hero come to life, which only made his crush on Percy and Percy's failure to save Bianca that much harder for him to accept.]]
* GeniusBonus: It might or might not be intentional, but the mention of a statue of Susan B. Anthony strangling Frederick Douglass in ''The Last Olympian'' might be a roundabout reference to how the two civil rights leaders, formerly steadfast allies, became divided over the issue of the Fourteenth Amendment allowing black males to vote, but not women of any race (and to add insult to injury, it was the first Amendment that explicitly mentioned male and only male citizens).
* GrowingTheBeard: Most agree that ''The Titan's Curse'' was where the series really began to show its quality.
* HarsherInHindsight:
** Percy catching Annabeth [[spoiler: when she nearly falls off Olympus becomes cringe worthy after the events of the third ''Literature/TheHeroesOfOlympus'' book, ''Mark of Athena'', where he catches her again while she's being dragged by Arachne's threads into Tartarus and this time around, he chooses to fall with her.]]
** Promise (which seems to be the ArcWords in Luke's life), after reading ''The Diary of Luke Castellan''.
** The tense relationship between Nico and Percy becomes downright [[TearJerker depressing]] after ''The House of Hades'', [[spoiler: where it's revealed Nico was hiding his true feelings about Percy.]]
** It's easy to miss it, but in his introduction scene, Mr. D quips how his father (Zeus) likes punishing him. This is bad enough but it becomes ten times worse when you read the Trials of Apollo.
* HilariousInHindsight:
** "She made ''blue waffles'' and blue eggs for breakfast."
** Tyson, a teenage boy, has a [[PeripheryDemographic fondness for]] [[WesternAnimation/MyLittlePonyFriendshipIsMagic ponies]].
*** For that matter, the fact that he named a hippocampus that he developed a particular attachment to "Rainbow".
*** It is mentioned that monsters (which Tyson technically is) age differently from mortals and he is, sort of, a child.
* HoYay:
** See FoeRomanceSubtext and EvenTheGuysWantHim. Percy's admiring descriptions of Luke's looks and skill come off less BigBrotherMentor and more PrecociousCrush. Special notice goes to their last meeting in ''Thief''. Percy finds Luke hacking apart the practice dummies in the sword arena and stares, entranced, marveling over his skill, the intensity in his eyes, [[DistractedByTheSexy his shirt clinging to him with sweat]]....Until Luke notices and Percy valiantly tries to quip his way out of the embarrassment. Now compare the scene in ''The Demigod Diaries'' when he almost loses a fight [[AmazonChaser because he was watching]] [[BadassBookworm Annabeth]] [[OfficialCouple trouncing her opponent.]]
*** Hell, when Luke gives him the enchanted sneakers, Percy admits the gesture made him blush almost as much as Annabeth. [[HypocriticalHumor Who he then jibes for being obvious]] about ''her'' crush on Luke.
** Percy and Nico share a bit in ''The Last Olympian''. [[spoiler: And then in later books, it turns out that Nico actually has/had feelings for Percy.]]
** Travis and Connor Stoll (from the Hermes cabin). Percy and Tyson, too, but the Stolls are [[HeterosexualLifePartners almost never without each other]].
* InferredHolocaust: In the first book when Percy, Annabeth, and Grover face Hades, the god of the dead becomes so enraged that he causes not one but two earthquakes, and Percy remarks that it will not have been a peaceful night in L.A. When the kids resurface, Los Angeles is ''burning''. No casualty numbers are given, but it could qualify as a [[FunnyAneurysmMoment Funny Aneurysm Moment]], as Hades had just finished complaining about how the Underworld was overcrowded and didn't need more subjects. Kinda ironic.
** Manhattan sounds pretty bad by the end of the last book. [[spoiler: Everyone had fallen asleep, which probably includes people who were cooking things, people who were in the hospital getting surgery, etc. And Fifth Avenue is a disaster.]]
* IKnewIt: Who is the lightning thief? Could it possibly be [[spoiler:Luke, the swordsman who is a son of the god of thieves, and has a scar running across his face?]]
* LesYay: Silena and Clarisse, Annabeth and Thalia, Zoë and Bianca. And just... the Hunters as a whole.
** Clarisse and Silena in particular considering they play out the relationship between [[spoiler:Achilles and Patroclus]] to its tragic conclusion. And we all know about ''them''.
* MagnificentBastard: Kronos.
* PeripheryDemographic: Because of Riordan's [[ShownTheirWork attention to detail]], some people who're outside the target demographic of young adults find enjoyment in these works.
* RewatchBonus: For those that read the [[Literature/TheHeroesOfOlympus sequel series]], every single scene regarding Nico and Percy takes on a new meaning once you learn [[spoiler:Nico had a crush on Percy since the day he was rescued]].
* TheUntwist: The fulfilling of the prophecy in ''The Titan's Curse'' It says "One will be ''lost''" and everybody assumes it means someone will die. But it never outright states dying, so with the usual ProphecyTwist you could expect [[spoiler: Bianca to be lost and later found. It turns out she gets KilledOffForReal.]]
* TheWoobie: Everyone not named Gabe, Ares, or Kronos:
** Luke's [[spoiler:mother, May Castellan]], also deserves a special mention here.
** In ''The Last Olympian,'' the narration actually says that Hermes "looked like he needed a hug." If that's not baiting woobiedom, nothing is.
** MRS. JACKSON. Ridiculously nice, sweet, and caring, and yet gets get stuck with an abusive slob of a husband and serious financial problems. [[spoiler: Luckily, things get much better.]]
** Even '''Dionysus''' has a little of this after he revealed his relationship with Ariadne to Percy in the third book, and after [[spoiler: one of his sons dies]] in the fourth book. And then you get to his chapter in ''Percy Jackson's Greek Gods''...
!!Tropes which only apply to the film:
* AngstWhatAngst: Percy seems to handle [[spoiler: the sudden death / disappearance of his mother]] very well...
* AntiClimaxBoss: [[spoiler: Kronos in ''Sea of Monsters'', possibly intentional because the rest of the books might not be adapted to film.]]
* BadassDecay: Although her actual status as a badass is somewhat disputed (see BrokenBase below), Annabeth still ''does'' a lot of things in the first movie and is actually helpful in several situations. Come the sequel and she does absolutely squat anymore despite tagging along as a main character for the whole film. Her position as the abrasive ActionGirl has been taken over by Clarisse while Annabeth has become little more than a constant DamselInDistress.
* BrokenBase:
** Whether or not Annabeth counts as a FauxActionGirl. Those who claim she is point to the fact that she has to be saved from Medusa by Percy, doesn't figure out the Lotus hallucination until after they're outside it and then does nothing in the climax - despite claiming to have lots of experience with battle strategy at camp. Those who say she isn't point to her beating Percy in their first duel (and he needs a power boost from water to match her), being the one to use CarFu against Medusa, successfully shooting some guards and the hydra and merely being OvershadowedByAwesome - since only one person can wear Hermes's sneakers. RuleOfCautiousEditingJudgement really applies here.
** Which of the movies is better or worse and which is the most faithful adaptation.
** There's something particularly aggrivating with Hades's AdaptationalVillainy. While his morality was ambiguous and he was actually decent in comparison to Zeus in the books, he's given the EverybodyHatesHades treatment from the writers. It certainly doesn't help that the Underworld is designed to look like Hell (literally), thus implying that he's the Devil.
** Persephone's strange attraction towards Grover. Most incarnations show her to be HappilyMarried to Hades, but the film very clearly states that she's unhappy with him.
* EvilIsSexy: Medusa. Of course, she ''is'' played by Uma Thurman.
* FollowTheLeader: This adaptation has Kronos as the main antagonist despite not being in the book. Kronos' "Titan made of lava" appearance is also reminiscent of [[Film/ClashOfTheTitans2010 a recent movie about demigods]].
* HamAndCheese: While Uma Thurman and Steve Coogan are only briefly in the film, they do manage to make their respective scenes ''awesome'' (see OneSceneWonder below).
* HilariousInHindsight:
** In the Japanese dub of the films, Percy is voiced by Creator/MamoruMiyano, who also later voiced [[Anime/{{Free}} Rin Matsuoka]]. Extra hilarity that, in RealLife, Miyano ''[[IDontKnowMortalKombat doesn't know how to swim]]''. Even more ''extra hilarity'' he voiced [[Manga/DeathNote Light Yagami]], a guy who wants to become a god, not to mention he dubbed another guy [[Film/HarryPotter named Percy]]... then he later voiced ''Perseus'' in ''Anime/FatePrototype'' and ''VideoGame/FateGrandOrder''.
** Goes UpToEleven with Creator/TesshoGenda as Zeus: he is the Japanese dub voice of ''[[VideoGame/GodOfWar Kratos]]'', who wants to ''kill'' his father '''Zeus'''.
* NightmareFuel: The scene in Medusa's shop. While it isn't that creepy in the book (there the scene is a lot less ominous up until the Uncle Ferdinand bit), the movie added a panicking woman whose husband had already been turned to stone and she's hysterical with fright. She eventually gets turned into stone too, and the only mention that's made of it is when Annabeth explains how she scraped her wrist (the woman had been holding her wrist when she had been turned to stone and Annabeth had to pull her hand free).
** [[spoiler: Kronos' resurrected body in the second film is rather terrifying. [[FromBadToWorse And then he starts swallowing Half-Bloods whole]].]]
** Despite all the comic relief going on around them, the inside of Charybdis is still a disturbing location. We see that the monster ''digests'' its food by mashing it with gigantic, fleshy mallets.
* OneSceneWonder: Uma Thurman and Steve Coogan in the first film. Nathan Fillion in the second.
%% SoOkayItsAverage
* TheyChangedItNowItSucks: Most fans tend to regard it as a disappointment.
* TheyCopiedItSoItSucks: Most people who weren't fans of the book, just wrote the first movie off as a rip off of ''Franchise/HarryPotter''.
* UnfortunateImplications: Grover's characterization in the film was such a nonstop barrage of black stereotypes that it lead [[http://msmagazine.com/blog/blog/2010/03/08/percy-jackson-minstrel-show/ one person to liken it to a minstrel show.]]
!! Tropes that apply to the musical
* AwesomeMusic: Pretty much all the songs.
* CounterpartComparison: Probably helped by them sharing an actor (George Salazar), but Grover is sometimes compared to Micheal from ''Theatre/BeMoreChill'', due to being the main character's best friend, and having a [[TearJerker heartbreaking]] solo song. ("The Tree On The Hill" for Grover, and "Micheal In The Bathroom" for Micheal)
* OneSceneWonder: Clarisse in "Put You In Your Place". While she later sings in "Bring On The Monsters", "Place" is the only song in which she's the main singer.
* WinBackTheCrowd: The musical has been much better received by the fandom then the movies
* TheWoobie: The main trio all get songs that present them as this: "Good Kid" for Percy, "The Tree On The Hill" for Grover, and "My Grand Plan" for Annabeth.
** "The Campfire Song" highlights how the gods have ruined the lives of the campers in some way or another.
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