History Fridge / PercyJacksonandTheOlympians

* Kronos seems far too easy to defeat, in the end, however the sequel reveals that the giants starts awakening after he is defeated. ''The House of Hades'' also reveals that Gea's favourite children are the giants, and she was planning on their victory all along. Of course he was easily defeated, he was victim of a BiggerBad's schemings.

* We're told that Sally Jackson chose the name "Perseus" for Percy because he, pretty much alone of the great Greek heroes, got a reasonably happy ending. However, Perseus [[spoiler: killed his grandfather (by accident); Percy, by comparison, is responsible for the defeat of Kronos, who is ''his'' grandfather]]. So it's only fitting that history repeated itself.

** [[spoiler: Annabeth's TakingTheBullet in TLO. She was attacked by Ethan, a son of Nemesis, the spirit of retribution against hubris, something that Annabeth admits to.]]
** [[spoiler:If you look at it that way, Ethan and Nemesis even joining Kronos' side. Hubris is considered to be Zeus's flaw, after all. Then Ethan balances this out--while his mother still fights for the Titans, he turns and fights for the gods, against Kronos, who's ego is big enough to have its own gravity field. Really, for all the myths that were messed up in the books, Riordan was ''perfect'' with some of this stuff.]]

* Surely you'd assume that demigod children would know about their divine origins - actually; a lot of gods probably try to keep this hush hush because when some people know it's not turned out well - I mean, Tantalus, a favored child of Zeus, probably left a ''bad'' taste in a lot of mouths in Olympus (Especially Demeter), Phaeton was allowed to drive the sun because his fellow kids didn't believe him, etc. Not to mention when ''mortals'' know that they were in love with a god, not all of them turned out that well. ([[spoiler: It's mentioned in "The Lost Hero" that Thalia and Jason's mom was...kinda screwed up in the head and Zeus didn't really help her that much, until he came around in his Roman aspect.]] [[spoiler: In regards to Piper's dad, this is outright confirmed. Knowing the gods existed [[TheseAreThingsManWasNotMeantToKnow seriously messed with his head]].]]) Plus in today's society being a demigod is a burden than a blessing, as oppose to ancient times, where demigods are practically (and some cases are) worshiped, nowadays being told your a demigod will only make you die faster. Naturally the kids have a right to know are told when they're old enough to handle it; and some mortals who do know about it are told because they can maturely handle it.

*** In fact, going by evidence from the sequel series, this seems to be no coincidence as ''Zeus appears to have picked the name'' [[note]][[spoiler: as in her brother's case]] [[/note]].

* Prometheus was right about the Battle of Manhattan being a reenactment of the Trojan War. However, [[spoiler:he was wrong about which side was which]]. That's because Prometheus is the god of ''forethought'' not ''foresight''. He can predict the future, but as anyone from Greek mythology tell you, the future is not always what you think it is.

* We're told in ''The Last Olympian'' that Nico and the Pegasi dislike each other. This mostly seems to be because his father is [[spoiler: Hades and children of him are generally outcasts]], but in ''The Sea of Monsters'', Percy mentions that Pegasi are sort of neutral territory between Poseidon and Zeus only. [[spoiler: So naturally the Pegasi would dislike a son of Hades!]]
* I was always a little confused about how [[spoiler: Silena Beauregard got the Ares cabin to believe she was Clarisse and follow her into battle, because she and Clarisse don't look anything like each other. But then in ''The Lost Hero'', it's revealed children of Aphrodite sometimes have the ability to make other people do stuff with their voice. No wonder they believed Silena was Clarisse, she ''charmspoke'' them into it!]]
** It's never stated that [[spoiler: Silena could charmspeak]], but it's a possibility.

** The above is pretty much explicitly stated, but it's also a pretty obvious allusion to The Iliad (the need-to-know book for info on the Mist). Achilles (Clarisse) was the best fighter and led the finest men in the Greek army, but (s)he sulked due to having a prize earned in battle awarded to someone else. (Thankfully, Clarisse's prize was a flying chariot, not a slave girl.) At the battle's most desperate point, Patroclus/Silena took Achilles' armor and led his men into battle to hearten the Greeks. Achilles' men knew it's not really their leader, but they want to help the Greeks and will follow ''anyone'' at that point. [[spoiler: And both of these false leaders die as a result of their deception]]

* Rachel, a mortal who had no ties to the gods until [[spoiler: she became the oracle]], has a very much Jewish name.

* At the end of TLO, Annabeth takes Nico aside and says something to him that makes him agree to go back to camp with them. However, he acts really embarrassed after having the talk with her. But in House of Hades, we find out [[spoiler: Nico has a crush for Percy]]. Annabeth, being the daughter of wisdom, must have figured it out and used it to blackmail him! This explains why she didn't want Percy to hear them talking and also why Nico was so flustered afterwards!

* [[spoiler: Kronos]] seems far too easy to defeat, in the end, however the sequel reveals that [[spoiler: the giants starts awakening after he is defeated.]] ''The House of Hades'' also reveals that [[spoiler: Gea's favourite children are the giants, and she was planning on their victory all along.]] Of course he was easily defeated, [[spoiler: he was victim of a BiggerBad's schemings.]]

* After rereading the battle of the labyrinth I realized that Riordan was setting up the groundwork for the [[spoiler: revelation of a roman camp]] in the lost hero and Chiron's knowledge of it early. When Quintus [[spoiler: actually Daedalus]] appears Percy is skeptical of a grown up demigod who had never been to camp halfblood. But Chiron seems to feel uneasy but accepting.[[spoiler: He probably assumed that Quintus was a roman demigod doing what Nico was doing in the Son of Neptune]]. This is further supported by the fact that [[spoiler: Quintus was a common Roman name]].

* Why did Janus and Pomona, Gods were were (possibly in the latter's case) on the Titans side, begin appearing to the Greek Heroes in the later books? Simple, with the war officially on Kronos would see value in reminding the Greeks [[spoiler: to hate Roman things]]. Should the conflict go on for a while, such hate would be of use to divide and conquer the demigods and cripple the gods, and may have been a plan before Typhon was able to incapacitate the gods.

** Take it one step further and consider the ship's inhabitants: ([[spoiler: Kronos' army of monsters]]). They were most likely [[spoiler: fed to aforementioned monsters]]. Full stop.
*** In Son of Magic (Short story by Riordan's son, found in Demigod Diaries), [[spoiler: Alabaster, son of Hecate, states that when Beckendorf and Percy blew up the Andromeda, not only were monsters lost, but demigods who were allied to Kronos.]]
*** Percy considers the implications of this himself in the book - [[spoiler: while creating a diversion so that Beckendorf can finish arming the explosives, he comes across a fellow demigod and tries to warn him about what's going to happen if he doesn't get off the ship.]]
* The Labyrinth was [[spoiler:destroyed. Now, imagine how many people may have been inside when it collapsed...]]
** [[spoiler: Considering the slim chance of anyone actually getting out and not dying an excruciating death from starvation, dehydration, and exhaustion, it was probably a MercyKill.]]

* At the end of ''The Lightning Thief'', Percy's mom [[spoiler: turns her husband to stone, with Percy's help.]] For the entire rest of the series, no one brings it up again, or comments on the fact that this is murder.

** Bear in mind that this is a Greek epic written in modern times. People got away with that stuff all the time in those myths, especially to people as foul as [[spoiler: Gabe.]]
** I'd like to point out that the nickname ''Smelly'' Gabe was said to be appropriate for a good reason: his smell was so bad that it could hide a demigod from monsters. Percy was son of one of the three greater ones, and it still took months for a monster spending several hours every day next to him to suspect him. Being the first one, quite far from the DarkerAndEdgier tones the series got from the third onwards, that subject is never really touched but it's quite implied he [[spoiler: used at the very least to beat Percy's mother.]] More than fridge horror, is that sincerely everyone just think he got what he deserved.

** Technically under that logic Tyson would never die, so that's not so bad. Though how monster resurrection works for friendly monsters isn't known. Given that [[spoiler: Percy in The House of Hades]] was worried if being Tartarus would affect [[spoiler: Mrs. O'Leary ]] in a sort of reset, it does raise a new fridge horror: could Tartarus reset a dead Cyclops from being helpful to Poseidon in his forges to an enemy of demigods everywhere?

* Given the kind of person Gabe was and the fact that Sally COULDN'T leave him, it is probable that that Sally was [[spoiler: effectively raped every night.]]

** It's also revealed that the Titans are no where near their full power at all in the series. Kronos was trying to reborn himself using Luke's body like an egg. If he was full power, Percy and all the other demigods would literally be incinerated just from his mere presence.
* After rereading the battle of the labyrinth I realized that Riordan was setting up the groundwork for the [[spoiler: revelation of a roman camp]] in the lost hero and Chiron's knowledge of it early. When Quintus [[spoiler: actually Daedalus]] appears Percy is skeptical of a grown up demigod who had never been to camp halfblood. But Chiron seems to feel uneasy but accepting.[[spoiler: He probably assumed that Quintus was a roman demigod doing what Nico was doing in the Son of Neptune]] this is further supported by the fact that [[spoiler: Quintus was a common Roman name]].

* Athena's apparent dislike of Percy might be only partly because he is Posiden's son. Aside from the fact that Percy has been known to act recklessly, the boy has a powerful scent as a child of the Big Three, and is effectively a monster-magnet. Keeping that in mind, it's understandable that Athena doesn't like him hanging around her favorite daughter so much; she only wants to protect Annabeth. It could also be due to Athena being the goddess of battle strategy, she tends to see people, especially mortals as pieces on a chessboard. It's not that Athena doesn't like Percy (in the past she has help out numerous children of Posiedon before such as Bellerophon, and Theseus was even a king of her patron city), it's that she doesn't trust him.

* Why did Janus and Pomona, Gods were were (possibly in the latter's case) on the Titans side, begin appearing to the Greek Heroes in the later books? Simple, with the war officially on Kronos would see value in reminding the Greeks [[spoiler: to hate Roman things]]. Should the conflict go on for a while, such hate would be of use to divide and conquer, and may have been a plan before Typhon was able to incapacitate the gods.

* In ''The Sea of Monsters'', Clarisse is traveling with a Confederation battleship. She states Ares gets the ''losing'' side's equipment and dead men after a battle or war as the reason for this. Why the losing side if he's a god of war? For one, the losing side is less likely to get a proper burial, meaning they would be forbidden from entering the Underworld and their spirits would be forced to wander as ghosts, so he's just putting them to use. Two, since the losing side's dead bodies are more likely to be left on the battlefield to rot, Ares' sacred beards, the vultures, and crows/ravens, would find them quick and eat them, which might be almost like sacrificing the bodies to him.

* Before Rachel Eliabeth Dare became the Oracle, the previous one was soul bound permanently to her body. Her corpse was still animated, even after it had been dead for presumably centuries. Therefore the Oracle had been living forever in the mummified body that was once hers. Since the Oracle would have lasted indefinitely until someone gave her a new body (Rachel), what exactly is gonna happen to Rachel's body in a couple hundred years?

** The above is pretty much explicitly stated, but it's also a pretty obvious allusion to The Iliad (the need-to-know book for info on the Mist). Achilles (Clarisse) was the best fighter and led the finest men in the Greek army, but (s)he sulked due to having a prize earned in battle awarded to someone else. (Thankfully, Clarisse's prize was a flying chariot, not a slave girl.) At the battle's most desperate point, Patroclus/Silena took Achilles' armor and led his men into battle to hearten the Greeks. Achilles' men knew it's not really their leader, but they want to help the Greeks and will follow ''anyone'' at that point.

** I guess it's pointing out how the abundance of fast food chains in the world today indicates a very higher presence of monsters...which, to my knowledge, still doesn't qualify as Fridge Horror since it was what the line was originally meant to convey. Isn't FrudgeLogic something that only becomes clear if you think about it too much?

*** Percy considers the implications of this himself in the book - [[folder: while creating a diversion so that Beckendorf can finish arming the explosives, he comes across a fellow demigod and tries to warn him about the explosion.]]