History YMMV / PercyJacksonAndTheOlympians

** Gabe is meant to be a HateSink, but him being an incredibly one dimensional character combined with the fact that his rudeness is often over the top makes a lot of his behavior unintentionally comedic.

** The entire encounter with Procrustes in ''The Lightning Thief'' is basically immediately forgotten after Percy slays him; it's essentially an avenue to tell Percy the location of the Underworld's entrance, and has been omitted in every adaptation.

* RonTheDeathEater: People frequently claim that Poseidon should have done more to protect Sally and Percy - on some regards, that may be true, but the manner in which most discuss it overlooks a critical message in the first book. Poseidon ''did'' offer to protect Sally and Percy - he said he would give her an underwater palace. Sally turned it down because she didn't want her life to be catered for by a god. Likewise, people say Poseidon should have saved Sally from Gabe, but as Percy himself realized, it was best to let Sally save herself. Plus, Sally technically married Gabe of her own will. If Poseidon had intervened with that because he believed that would have been best for her, that would have been on the same level of "catering".
** Some of Annabeth's behavior in the series is often used by those that don't like percabeth to claim that she is abusive. Fans often take examples of her being jealous and unkind to Percy as her being toxic and in fics often portray her as manipulative and abusive.

** some of Annabeth's behavior in the series is often used by those that don't like percabeth to claim that she is abusive. Fans often take examples of her being jealous and unkind to percy as her being toxic and in fics often portray her as manipulative and abusive

** another common fan theory is that percy is bisexual is pretty common in fan spaces

** 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.]] Also 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. The descriptions of Luke are also pretty generous. And seeing as they're told from Percy's point of view...

** Despite being little more than a WackyWaysideTribe, Aunty Em, real name {{Medusa}}, is one of the most well-remembered characters among fans due to both her [[AffablyEvil nicer portrayal]] compared to myths, and her essentially acting as an HonestJohnsDealership owner. Although the film adaptation reverted her back to pure villainy, fans still got a kick out of [[EvilIsSexy her looks]], courtesy of Creator/UmaThurman.

* EvilIsSexy: Medusa. Of course, she ''is'' played by Uma Thurman.

* BigLippedAlligatorMoment: While Percy's encounter with Circe ''does'' get mentioned later, even in much later books, Annabeth [[spoiler:freeing Blackbeard]] is completely forgotten about in ''Sea Of Monsters'', even though [[spoiler:he's ''Blackbeard'' and ''they stole his ship'']], yet the next chapter continues on like nothing happened.

* UnintentionalPeriodPiece: Mildly but the film was shot in 2009 and released in 2010--as a result has a few very timely references. Grover complains about Charon burning money "during a recession", Percy uses an [=iPod=]'s reflection to see Medusa, the Lotus Casino features Music/LadyGaga's "Poker Face" and Music/{{Kesha}}'s "Tick Tock" prominently, and Luke is seen playing ''VideoGame/CallOfDuty: Modern Warfare 2'' (released in 2009). There's also a distinctive lack of smartphones among the teens, and Annabeth requires a laptop to video call Luke over Skype. In contrast, the books' setting is generally timeless, and while Creator/RickRiordan did write the books in the mid-to-late 2000s, he keeps the cultural references of modern stuff to a minimum and does not establish much in technology.

** Remember, these books were written in UsefulNotes/The2000s. It's entirely likely that some kid searching up "blue waffle" on the internet back then got [[ShockSite a certain kind of webpage]] instead of Percy's favorite food.

** Mr. D regularly calls Percy "Peter Johnson." Both "Peter" and "Johnson" are common euphemisms for penis.

** The idea that percy beat Ares at the age of twelve is a common misconception. In reality Percy managed to land the first blow and Ares was holding back due to various rules and Kronos's influence
** There is a common belief that Dionysus treats the campers the way he does because he is afraid of getting attached to the mortal demigods only for them to die

* 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 Fifteenth 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).

* LikeYouWouldReallyDoIt: It's obvious that [[spoiler:Tyson's death in ''Sea of Monsters'' will not be permanent. The whole plot point is a clear set up for Percy's CharacterArc in that novel. Tyson's supposed death makes Percy feel guilty about being embarrassed by him, and then it's easy to assume that at the end Tyson will miraculously reappear and save the day and Percy will fully accept him as his brother... which is exactly what happens.]]

* {{Woolseyism}}: Some translators had a fun time with the "dam snack bar" joke (where our heroes kept joking around at the Hoover Dam).
** In the French translation, the joke isn't about the word "dam(n)" but instead about the name of the dam, Hoover. Our protagonists kept joking about if the snack bar is ''ouvert'' (open), which sounds like "Hoover".
** The Hebrew translation has the pun turned a little more vulgar. There's a sign at the dam that describes it as having "בטון מזוין" (''beton mezoyan''), a technical term meaning "reinforced concrete". However in Hebrew the word "מזוין" (''mezoyan'') has the [[DoubleEntendre double meaning]] as a slang term for ''[[PrecisionFStrike "fucked"]]''. So in the Hebrew version, a bunch of preteens and teenagers are joking about the "fucking concrete".
** On the other hand, the traditional Chinese (Taiwan) translation is ''less'' vulgar with this. It takes advantage of Mandarin Chinese being a tonal language and changes the tones to the words for dam (大壩, ''dà bà'', literally "great dam") to turn the 'dam snack bar' into the 'target practice snack bar' (打靶, ''dǎ bǎ'', literally "hit shooting-target"). This is most likely playing on how Zoë Nightshade, the one who first called for the questers to visit the "dam snack bar", was a Hunter of Artemis.

** Perhaps without thinking about it too deeply, fans will often say that Percy has five beads on his necklace, representing the five adventures in the five books. He actually only has four; no bead was given for their quest in "The Titan's Curse" because it took place in the same year as "The Sea of Monsters" and that year's bead had already been given out.

* Persassy (short for "Persassius") for Percy.

* UnintentionalPeriodPiece: Mildly but the film was shot in 2009 and released in 2010--as a result has a few very timely references. Grover complains about Charon burning money "during a recession", Percy uses an [=iPod=]'s reflection to see Medusa, the Lotus Casino features Music/LadyGaga's "Poker Face" and Music/{{Kesha}}'s "Tick Tock" prominently, and Luke is seen playing ''VideoGame/CallOfDuty: Modern Warfare 2'' (released in 2009). There's also a distinctive lack of smartphones among the teens, and Annabeth requires a laptop to video call Luke over Skype. While Creator/RickRiordan did write the books in the mid-to-late 2000s, he generally treated the setting as more timeless; the books averted establishing a lot of technologies and kept the cultural references of modern stuff to a minimum.