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Literature: The Heroes of Olympus

Seven half-bloods shall answer the call,
To storm or fire, the world must fall,
An oath to keep with a final breath,
And foes bear arms to the Doors of Death.
The Prophecy of Seven

Warning: This page contains spoilers for both the first and second series.

A Sequel Series to Percy Jackson and the Olympians by Rick Riordan. It takes the same setting as its predecessor and is set a short time after.

The first book, The Lost Hero, was released on October 12, 2010. The story follows a half-blood, Jason (like that Jason) finding himself in a school bus with absolutely no memory of who or what he is, along with a girl, Piper, and a boy, Leo. The three turn out to be half-bloods and run into Annabeth (from the first series) and someone named Butch, who are looking for the missing Percy Jackson. Jason, Piper, and Leo are sent on a quest to free the captured Hera and end up realizing their destinies are far greater than they ever imagined. Meanwhile, Gaea the Earth Mother is stirring and reveals her plan to take down the gods, who are in no condition to fight her due to their warring Greek and Roman aspects.

The second book, The Son of Neptune, was released on October 4th, 2011, and reunites the reader with an amnesiac Percy Jackson who finds his way to a haven for Roman demigods — Camp Jupiter — and leads two newbie heroes, Frank and Hazel, on a quest to free Thanatos, the god of death.

The third book in the series, The Mark of Athena, was released on October 2, 2012. Percy, Jason, the four new demigods, and Annabeth join forces to fly a Cool Airship to Rome, with Annabeth following a secret and dangerous mission from her vengeful mother.

The fourth book, The House of Hades, was released on October 8, 2013. 5 of the 7 heroes must close the gate of Death while Annabeth and Percy are trapped in Tartarus. If the door is closed while they are still on the other side, they're stuck there. But it's the only way to stop the giants from awakening Gaea. In the meantime, Camp Jupiter is a month from marching on Camp Half-Blood and destroying it. All of the seven are narrators.

The fifth and final book, The Blood of Olympus, was released on October 7, 2014.

General tropes about the setting carried over from Percy Jackson should be left neatly at the bottom of the page.

Please place tropes which only apply to one character on the character sheet. The main article is getting cluttered, and we're only on book four!

Has a Best Installment Crowner now.

This series provides examples of:

    open/close all folders 

    Tropes A-G 
  • Abusive Parents/Parental Abandonment:
    • Jason's mom.
    • Queen Marie, Hazel's mother, actively (if unintentionally) cursed her daughter and resented Hazel for it when bad stuff started happening.
    • Reyna's father, who suffered from PTSD and his love of Bellona began to make him go off the deep end.
  • Adults Are Useless
  • Affably Evil: All the Giants are actually rather charming in their own twisted ways.
  • Affirmative Action Legacy/Affirmative Action Girl: While a good majority of the characters in the original series were Caucasian, of the five new heroes, one is Native Americannote , one is Latinonote , one is African Americannote , one is Chinese-Canadiannote  — and only onenote  is white. See Seven Token Band.
    • And now Reyna is confirmed to be Puerto Rican, meaning the Romans are led by a woman of color.
    • Stated in-universe that Rome was much more diverse than Greece, due in part to the expansiveness of the empire, as well as the existence of New Rome itself. Also stated is how discrimination by race isn't an issue; you're only ridiculed if you're weak and can't pull your own weight.
  • Alaska: The land beyond the gods. Where Percy, Frank, and Hazel go on their quest in Son of Neptune.
    "As they trudged on, Percy thought about all the crazy places he'd seen. None of them left him speechless like Alaska. He could see why it was a land beyond the gods. Everything here was rough and untamed. There were no rules, no prophecies, no destinies—just the harsh wilderness and a bunch of animals and monsters. Mortals and demigods came here at their own risk."
  • All Girls Want Bad Boys: Lampooned with Narcissus's nymphs. Team Leo!
  • All Your Base Are Belong to Us: Polybotes' invasion of New Rome.
    • New Rome's invasion of Camp Half Blood.
  • Alone Among the Couples: This used to be the case for Leo. Not anymore, as of House of Hades. Everyone averts this, even Tyson and Ella, except Nico and Reyna. And then Nico gets some major Ship Tease with Will Solace towards the end of Blood.
  • Amazon Brigade: The actual Amazons show up in Seattle.
  • Amnesiac Lover: Averted. Jason quickly reciprocates Piper's feelings, but he doesn't want to lead her on when he isn't entirely sure how he feels about her (first because of his amnesia, then because it turns out they were never dating in the first place, and then because of Reyna).
    • Subverted with Percy. Annabeth is the one thing he's absolutely sure about from his old life.
  • Ancient Grome: The ultimate aversion.
  • And the Adventure Continues
  • Animorphism: The Zhang family.
  • Anti-Climax Boss: Gaea isn't nearly as frightening as she was built up to be.
    • The Giants as well. The Heroes are able to fight them on fairly equal footing and decimate their combined forces when the Gods finally show up.
  • Anti-Hero: As mentioned in the previous series, Percy is not above prioritizing his loved ones over the fate of the world. It's blatantly stated that this will come into play later, and it will be up to Frank to help him stick to his duty.
    • Nico Di Angelo. A disturbing, powerful loner who's one of the deadliest mortals on the planet. Percy's still on the fence about him, given their troubled history, and he creeps the hell out of everyone on the Argo II, save Hazel and Annabeth. It doesn't help that Jason barely avoids fighting him after a misunderstanding—and he's not sure he'd be able to win.
  • Arbitrary Headcount Limit: By The Mark of Athena there is a team of seven demigods, but due to that many demigods together attracting too many monsters, most of the book is spent with forming random parties of two or three, usually leaving a few people behind on the Argo II from time to time. The result seems incredibly like an RPG - especially when Coach Hedge forces himself into the party in Atlanta.
  • Arcadia: A pastoral tapestry.
  • Artistic License - Economics: King Midas's plan. Let's just leave it at that.
    • Well, he WAS born before they really had invented it yet...
  • Art Shift: The covers of the first two books. Probably deliberate, to accentuate the more culturally refined nature of the Greeks (featured in ''The Lost Hero'') verses the rougher, grittier Romans (featured in ''The Son of Neptune'').
  • Ascended Extra: "D-list goddess" Khione plays a major role. Gleeson Hedge (referenced once in TLO) is another example. Will Solace and Jake Mason may also apply.
    • Hylla, Circe's assisstant, last seen in Sea of Monsters turns up again as Reyna's sister and queen of the Amazons.
    • Reyna and Nico - important figures in the story become two of the viewpoint characters in the end.
  • Asskicking Equals Authority: One of the two possible ways to get promoted to praetor.
    • Still in full effect for General Tyson of the Cyclops Army too.
    • Also the method by which the Amazons can challenge for the queenship.
  • Back for the Dead The Hunters of Artemis and Hylla's Amazon warriors return briefly in the Blood of Olympus only to see a number of them slaughtered by Orion. Hylla and Thalia survive, but Phoebe and Kinzie do not.
  • Back from the Dead: Medea, Midas and his son.
    • Euryale and Stheno, Medusa's sisters, in Son Of Neptune Also, Hazel and after the war games, Gwen (aka: Centurion Shish-ka-bob).
    • Monsters coming back from the dead is nothing new. Unfortunately, due to Death himself being chained, monsters come back mere seconds after being slain.
    • Let's just knock out all the tropes associated with "The Doors of Death are open, and Greek villains and monsters are coming back to life willy nilly":
      • Back from the Dead: Hazel sacrificed herself in 1941 to prevent Gaea from waking fully during World War II. Nearly seventy years later, Nico went to the underworld to sneak Bianca out, only to discover she'd already tried for rebirth. Instead, he rescued Hazel, who was also a child of Hades/Pluto. Add Leo to the list at the end of the final book.
      • Death Is a Slap on the Wrist: Pretty much the entire theme of The Son of Neptune - Death has been chained and the literal doors to the afterlife are now open.
      • Death Is Cheap
      • First Episode Resurrection
      • Resurrected for a Job
  • Badass: Nico flat-out tells the rest of the Five-Man Band that Percy is the most powerful demigod that he's ever seen. Keep in mind that by this point he's met two children of the king of the Gods, and had literally been to hell.
    • The rest of the Seven qualify as well as they were designed to be among the most powerful demigods ever. Leo is the first son of Hepheastus in centuries that can control fire and defeat a snow goddess. Piper has the rare gift of charmspeak and is more powerful than usual along with being a capable fighter. Frank is the son of the war god and can slay hundreds of monsters at once. Hazel easily mastered magic with no training along with her gem powers. Jason is tied with Percy being the best sword fighter. Annabeth survived Tartarus and hangs with the rest despite not having any powers.
  • Badass Army: The 12th legion.
  • Badass Boast: Jason and Porphyrion both during their boasting match.
    Jason: I'm the son of Jupiter! I'm a child of Rome, consul to demigods, praetor of the First Legion. I slew the Trojan sea monster. I toppled the black throne of Kronos, and destroyed the Titan Krios with my own hands. And now I'm going to destroy you, Porphyrion, and feed you to your own wolves.
    Leo: Wow, dude. You been eating red meat?
    • Percy to Polybotes, "You. Me. To the finish."
    Percy: Twelfth Legion. FULMINATA. Which then shot out a thousand blasts of lightning that basically annihilated the Giants entire center line due to Percy's willpower. BAD ASS.
    • Percy does this casually for himself and Annabeth in The Demigod Diaries. It fails hilariously.
    Percy: I'm Percy Jackson, son of Poseidon. This is Annabeth Chase, daughter of Athena. We help out the gods sometimes with little stuff, like - oh, killing Titans, saving Mount Olympus, things like that. Perhaps you've heard stories. So about that caduceus... it would be easier to just hand it over before things get unpleasant.
    • Not during a fight like most boasts, but this still deserves mention. When Hazel, youngest of the heroes, makes this declaration to Hecate, goddess of magic and crossroads: "“We’re going to find a way to stop Gaea. We’re going to rescue out friends from Tartarus. We’re going to keep the crew and ship together, and we’re going to stop Camp Jupiter and Camp Half-Blood from going to war. We’re going to do it all.”
  • Badass in Distress/Distressed Dude: Percy in The Lost Hero. Nico takes up the position from him by the end of Son of Neptune. Flips back to Percy and adds Annabeth by the end of The Mark of Athena.
  • Bad Bad Acting: Acting isn't one of Frank's many abilities.
  • Bag of Holding: Leo's magic toolbelt, which can produce any sort of tool (so long as it's not too huge) and apparently breath mints.
    • Piper gets a Cornucopia which allows her to produce an unlimited supply of food and water.
  • Bag of Spilling: In The Son of Neptune, Percy loses most of his memories. He is still effectively invulnerable due to his Curse of Achilles and repeatedly defeats the gorgons. Soon after June tells him that for him to enter Camp Roman he must lose his Curse of Achilles, leaving him vulnerable to harm, and he chooses to enter.
  • Batman Gambit: Double subverted. Percy tricks Phineas into giving up the location of Alcyoneus' lair, but it involves using himself as blackmail against Gaea and gambling that she'll come through for him. It works.
    • Annabeth pulls off a beautiful one in The Mark of Athena; it takes real nerve to talk your enemy into literally sticking her head into a trap, and that's after getting her to make the trap in the first place.
  • Battle Couple: Everyone by book three.
    • Except Leo, a.k.a. the Seventh Wheel.
  • Beauty Is Never Tarnished: Being claimed/blessed by Aphrodite invokes this. Piper tries her hardest to mess her appearance up, but her looks just keep fixing themselves for days afterward, to Piper's irritation.
  • Bestiality Is Depraved: Hazel is clearly grossed out by the story of how the Minotaur was born.
  • Betty and Veronica: This is the case about the triangle between Piper, Reyna, and Jason; however, it is unclear as to who is considered who, since both girls could be justified as either the Betty or the Veronica. Piper could be the Betty, since she is nicer, more outgoing, and less confident than the stoic Reyna (she believes that Reyna is more beautiful that her) and she just wants Jason to be happy no matter who he is with; she could also be the Veronica, since she is considered more beautiful than Reyna by Jason and she unintentionally interferes in what might have became a romance between the amnesiac Jason and Reyna. In the same way, Reyna could be the Betty, since she and Jason have known each other longer because she and Jason were best friends when he was at Camp Jupiter and she held romantic feelings for him (which were unrequited by Jason, he admits so himself), or she could be the Veronica, since she is meaner, more confident, and more aggressive (more "Roman") than the homely Piper and hides any feelings she has for Jason but wants him for herself. Ultimately, Jason chooses Piper, since he loves her for being who she is, and he never had any feelings for Reyna.
    • Subverted with Leo, Frank, and Hazel, since Leo doesn't act on any feelings he has for Hazel, and Hazel isn't in love with Leo but rather with Frank. However, who is the Betty and who is the Veronica is more clear cut in this case. Frank is the Betty, since he and Hazel are best friends, he houses feelings for her, and he lacks self-confidence, while Leo is the Veronica, since he interferes in and complicates Hazel and Frank's relationship and is far more assured of himself than Frank is. By The House of Hades, this triangle is effectively over, since Leo has fallen in love with Calypso.. All three of the characters comment on this new development.
  • Beta Couple: Jason and Piper, Frank and Hazel.
  • Big Bad: Gaea.
  • Big, Badass Bird of Prey: The giant eagles at Camp Jupiter.
  • Big Damn Heroes: Percy, Frank, and Hazel and the Amazons during the invasion of New Rome. The gods themselves play this role in the last book at the Parthenon.
    • Par for the course, Tyson shows up in time to save lives during the fifth book.
  • Bilingual Bonus: Doubles as Fridge Brilliance. Frank Zhang's grandmother calls him "Fai", also spelled as "Fei" (Riordan seems to be using the Taiwanese spelling rather than the mainland Chinese spelling), making his Chinese name "Zhang Fei". In Romance of the Three Kingdoms, a book that every Chinese person knows, Zhang Fei was known for two things: being not particularly good looking, and being a superb warrior, capable of scaring off entire armies by himself.
  • Black and Grey Morality: On a supernatural level, with the Olympians being a dark grey and the giants being black. In the third book Percy thinks the gods are marginally better than the giants, but far from what can be considered "good." Calypso makes a similar remark in the fourth book that the gods are somewhat better than the Titans and Giants. Jupiter himself is noted to be far from a good role model despite his status as king and moral leader. The heroes tend to be more "white," but several of the characters who sided with the giants did so for the same reasons the Titans had an army in the first book series...the gods tend to be horrible to those who do not deserve it.
  • Blessed with Suck/Cursed with Awesome: A good portion of the main cast has to deal with powers that can be either crappy or awesome, depending on the situation.
    • Leo, in addition to his technological talent, has fire powers. Great for fighting monsters, right? Yeah, except for the fact that said powers are difficult to control and extremely dangerous. Just ask Leo's mom. Oh, wait, you can't: she died in a fire started by accident by her son. And Apparently the last son of Hephaestus with the ability started the Great Fire of London. So that should give you an idea of what we're dealing with here.
    • Hazel can summon precious minerals from underground as per her mother's wish. While the ability has come in useful before, it absolutely ruined her first life, as the stones curse anyone who holds onto them...
    • Frank Zhang could darn well be the Trope Codifier for both. His life force is tied to a stick, and if it burns down completely, he dies. However, the fire from the stick has been shown to be able to free Death himself; who knows what other awesome stuff it could do. His Animorphism powers don't count, being just plain awesome without side affects.
  • Bling Bling Bang: Swords of gold
  • Blond Guys Are Evil: Octavian. This is the second time Riordan has made the evil guy from camp an older blond dude. Averted by Jason.
  • Blood Magic: Gaea plans to use Percy's blood in some kind of sacrifice to bring down the gods.
    • Per book three, it's any one male and one female demigod. She just really wants it to be Percy and Annabeth.
  • Bloody Bowels of Hell: Tartarus definitely fits for much of it.
  • Body Snatcher: In Mark of Athena.
  • Break the Cutie: Leo's mom's death. Later, Festus dying on Leo.
    • Hazel's flashbacks.
      • Nico's confrontation with Cupid in House of Hades.
  • Brick Joke: Annabeth's mouth is hung open at the horror of seeing Tartarus. She compares her reaction to how Percy drools in his sleep, the very first thing she ever said to him.
  • Broke Your Arm Punching Out The Titans: The gods of Olympus are in no shape to fight a war against the giants precisely because they're still broke from fighting the Titans and Typhon.
  • Brought Down to Badass: Percy loses the invincibility that comes with the Curse of Achilles, being reduced to "merely" the most powerful demigod and strongest fighter of the main characters.
  • Call Back: Ma Gasket shows up in Son of Neptune wanting revenge on Jason, Leo, and Piper. Percy also shows up to reclaim his place as a main character after being absent for the first book.
    • Reyna's quest near the end of House of Hades closely resembles Percy's first quest in The Lightning Thief: A demigod originating from the offending side (Percy/Reyna) has to return a powerful stolen artifact {The Master Bolt/Athena Parthenos) in order to prevent a devastating war. They are also aided by another powerful demigod (Annabeth/Nico) and a satyr (Grover/Hedge).
    • "We've got a dam hole." And this one is from the original series.
    • When Percy shows up again after falling off a giant cliff and Hazel and Frank are surprised, he mentions that he's fallen from higher, which was another reference to the first series.
      • A lot of references to the past series show up in House of Hades, the curses from past enemies that Percy and Annabeth encounter in Tartarus and Percy's brief time on Ogygia being just a few.
  • Casual Danger Dialog
  • The Captain: Roman praetors.
  • Catch a Falling Star: Percy to Annabeth at the end of Mark of Athena.
  • The Cavalry: Amazon reinforcements in New Rome.
  • Cavalry Betrayal: Polybotes's army assumes the Amazons are there to attack New Rome. In fact, they are riding to the Legion's aid.
  • Challenging the Chief: How the Amazons get their queens. This comes back to bite them when their Queen, who would side with the romans, is challenged by a Gaea-backed usurper who keeps on coming back to life whenever she is killed, winning through simple attrition.
  • Changing of the Guard: Percy and Annabeth are the only old characters who are part of the Seven.
  • Charm Person/Jedi Mind Trick: Piper, Drew, certain other children of Aphrodite, and Medea.
  • Cherry Tapping: Bacchus technically pulls one of these on the two giants after spectating Percy and Jason beating them down for him. He simply steps in after they're done and, after a brief appeal to the crowd of ghosts whether he should or shouldn't, he simply bats them on the nose with his pine-cone staff, finishing them.
  • Chekhov's Gag/Brick Joke: Five books later, Annabeth proclaiming the Laistrygonian giants to be "Canadians" in Sea of Monster is brought back up in Son of Neptune where Percy calls them Canadians... in front of genuine Canadian Frank Zhang. Frank is not pleased.
  • Chekhov's Gun: The bronze dragon. Festus first appeared in the shorty story collection "The Demigod Files."
    • And now Terminus. Seemingly a one-off gag, but then comes back in the climax to help Percy defeat a Giant.
    • Gorgon blood.
    • Chinese Handcuffs.
  • Chekhov's Gunman: Reyna and Hylla - two minor characters from Percy Jackson and the Olympians reappear. Reyna turns out to be a very important character.
  • The Chosen One: All of them were chosen by fate for their talents/gifts. No room for tag-along kids or the load.
  • Cliffhanger: Of the heart-wrenching kind.
    • At the end of the Mark of Athena. A big tear-jerking yet a bit heart-warming ending with Percy deciding to fall into Tartarus with Annabeth
  • Clockwork Creature: Festus.
  • Color-Coded for Your Convenience: Orange and purple for the Greek and Roman camps, respectively.
  • Compelling Voice: Medea, Drew and Piper all display this ability.
    • Thanatos in "The Son of Neptune".
  • Continuity Nod: In Percy Jackson and the Olympians Sea of Monsters Annabeth regrets forgetting her special coconut sunblock from Medea's department store.
    • And the bronze dragon also makes its first appearance in The Demigod Files.
    • Later plot point Bob/Iapetus's first appearance was also in The Demigod Files.
    • Also, while shopping in Medea's shopping mall, a bronze breastplate that is corroded with acid is mentioned along with other merchandise belonging to deceased campers. It likely belonged to Silena or Clarisse.
      • The Armor coupled with Aphrodite's conversation with Piper doubles as Fridge Brilliance when you realize that Aphrodite was most likely referencing Silena when she held up the armor.
    • Nereus, the old man of the sea, last seen in Titan's Curse, makes a blink-and-you'll-miss-it but funny cameo in Son of Neptune.
    • Vitellius, in Son of Neptune, asks whether or not Percy cleans stables during their first conversation. Since Percy's memory has gone, he can't remember that he did in Battle of the Labyrinth.
    • In Mark of Athena, Percy decides against telling some water nymphs who have been trapped that the nature God, Pan is dead, something he personally witnessed in The Battle of the Labyrinth.
    • Also in Mark of Athena, Percy compares the problem with the doors of death to having a 'dam hole'. When the characters ask what he means he says it was an inside joke.
    • While in Camp Jupiter, Percy is told that all Demigods have a talent for Latin, and meanings sometimes just pop into their head. Percy isn't Roman, so this isn't true. But when Reyna introduces her metal dogs, Aurum and Argentum, Percy instantly translates them into 'Gold' and 'Silver' respectively. Why? All the way back in the first book, in the original series, Percy took a Latin class.
  • Cool Horse: Percy, Jason and Hazel all have cool horses. Blackjack (a giant black Pegasus), Tempest (a storm spirit who happens to look and act like a horse) and Arion (fastest horse alive, capable of breaking the sound barrier, his favorite food is the cursed gold Hazel sometimes unintentionally summons)
  • Conveniently an Orphan: Most of the main and main supporting cast. Percy, Piper, and Annabeth are the only exceptions, and even the latter two don't have the best relationship with their Muggle parent.
  • Cool Boat: Percy blatantly calls the Argo II the most incredible ship he's ever seen. Averted by the beat-up dinghy that constitutes the entire Roman navy.
    Hazel: "I didn't even know we had a navy."
  • Cool Sword: Jason's Imperial Gold sword, which can also turn into a javelin- see Swiss-Army Weapon. Sadly, it broke during the fight with Enceladus.
  • Crazy-Prepared: The Zhangs have an armory in their attic that's almost as well stocked as the one at Camp Jupiter. They have everything from swords, bows, arrows, spears, even potato launchers for taking out earthborn. It comes in handy. (Don't forget the water-hose on the roof!)
  • Creator Provincialism: Noticeable aversion in comparison to the first series. Instead of all America, all the time (with a few digs at Canada), Heroes of Olympus looks set to be much more international: a Chinese-Canadian main character (complete with an exceedingly rare tip of the hat to Canada's military) a book cover set against the Quebec City skyline, a climactic moment in British Columbia, and a quest that looks set to take the heroes back to the original Rome and Greece.
  • Crossover Cosmology: When meeting his dad for the first time in a dream, Leo exclaims, "Holy Mother!" Hephaestus chides him, "It's 'holy father', boy. I would think you'd know the difference."
    • Topped in The Son of Neptune by rainbow goddess Iris, who hasn't quite decided whether her personal creed should be...Buddhism or Taoism. Amusingly, Buddhism canonically sees nothing wrong with being a god and Buddhist at the same time.
  • Crush Blush: Ella, Tyson.
  • Curb-Stomp Battle: Percy, Frank, and Hazel against the First and Second cohorts in the war games.
    • Also, Hazel and Frank against Alcyoneus the giant. It wasn't a totally one-sided battle, but they really gave him a beatdown.
    • The giants in general suffer from this despite all of their build up throughout the books. In the last book, Polybotes, the anti-Poseidon is defeated underwater by Jason and a minor sea goddess with ease. At the final battle, the demigods hold their own and only start to lose thanks to the giants healing powers keeping the latter going. Once the Olympians get involved it turns into a giant one-sided curb stomp largely due to the giants not having anything to counter the vast powers of the Olympians.
    • Also in the last book, For all the buildup of Gaea being unstoppable and destroying all of civilization once she manifest a physical form she is defeated with ease by three demigods and an exploding machine to supposedly never reform again.
  • Cyclops: Ma Gasket and her sons. Also, Tyson.
  • Darker and Edgier: Continuing the trend from the original series.
  • Dark Secret: Piper thinks she'll have to betray her friends.
    • Hazel is directly responsible for Gaea bringing back Alcyoneus .
  • Death Is Cheap: For the monsters, which are regenerating within hours if not minutes because Gaea made a new tunnel into Tartarus.
    • Eventually, even some demigods are able to come back from the dead without even realizing that they are. Freeing Thanatos puts a stop to that.
  • Death Glare: Used by Percy in Son of Neptune.
    "He'd perfected his wolf stare over the last few months - a look that said: However bad you think you are, I'm worse"
  • Deadpan Snarker: Percy all the way, pretty much everyone.
  • Deceased Parents Are the Best: Esperanza Valdez and Emily Zhang. Subverted with Marie Levesque and Jason's unnamed mother.
  • Delinquents: Jason and his friends are students at a 'Wilderness School,' a boarding school in Nevada for 'bad kids.'
  • Demonic Possession: Eidolons, who start a war between the Greeks and Romans by possessing Leo, Jason, and Percy.
  • Demoted to Extra: Annabeth, Chiron, and Clarisse.
    • Grover has officially joined the list as of Son of Neptune.
    • Annabeth recovers her lead status in Mark of Athena.
  • Did You Just Dump The Queen Of The Gods In The Little Tiber?
  • Disney Death: Oh no, Percy Jackson just fell off a cliff in a No Escape but Down situation! ... wait. He fell into water.
    • Leo - however, the reader knows otherwise.
  • Divided We Fall
  • Divine Conflict: There's an interesting example when the Greek gods start fighting with the Roman gods in that they're the same being, their Greek half and their Roman half, and the greater the difference between them, the more conflict they find themselves in. Frank, for example, has Mars and Ares constantly yelling, trying to outshout each other in his head. The few that avoid this are the ones whose Greek and Roman aspects are virtually indistinguishable from each other.
  • Does Not Understand Sarcasm: Hephaestus. He's not too smart dealing with organic life forms.
    "That was sarcasm, wasn't it? Machines don't have sarcasm, usually."
  • Does This Remind You of Anything?: An amnesiac hero with a ton of martial skills and esoteric knowledge named Jason.
  • Doorstopper: A harpy in Son of Neptune holds a library door open with a copy of War and Peace.
  • Doting Parent: Mars (a marked contrast with his Greek counterpart, Ares), Hephaestus, and Hades/Pluto all take time to speak to their children even when Zeus has forbidden it.
  • The Dragon: Porphyrion, the king of the Giants.
  • Dramatic Wind: Invoked and lampshaded by Jason during his boasting match with Porphyrion.
  • Dr. Jerk: Healing is Damasen's talent. Tact is not.
  • The Dulcinea Effect: Probably not what Reyna meant when she asked for Percy's help, but Percy interpreted it that way. See Ship Tease.
  • Dungeon Crawling
  • Dug Too Deep: Invoked. Gaea forces Hazel to use her powers to resurrect Alcyoneus. After realizing this, Hazel decides to bury herself with the giant to postpone Gaea's plans.
  • Easy Amnesia: Zigzagged. Both Jason and Percy have their memories stolen by Hera/Juno, but get them back a few days after joining the other camp of demigods. Jason joins the Greeks almost immediately after waking up with amnesia, but only gets most of his memories back at first. The rest take presumably months to return. Percy wakes up with and spends roughly two months with only the faintest memory of Annabeth and little else, but gets all of his memory back pretty much all at once. While this is appropriate, as Jason needed time to learn to trust the Greeks while Percy's Fatal Flaw allowed him to trust the Romans quickly, YMMV as to whose amnesia was easier. Percy's memories returning quickly was also partly caused by his drinking gorgon's blood.
  • Elemental Powers: The Seven
  • Eternal Recurrence: How many times do you think the Titans and giants will keep going after the Olympians?
  • Emotions vs. Stoicism: A running theme in Piper and Annabeth's friendship in The Blood of Olympus— the former is a daughter of the love goddess and trusts her natural instincts, while Annabeth, as a daughter of the goddess of wisdom, adheres to logic and strategy above all else. Comes to a head when they have to fight Mimas in the Temple of Fear, as Annabeth is scared out of her wits trying to come up with a way to beat him and Piper has to constantly remind her to feel, not think.
  • Everything Sounds Sexier in French:
    • Aphrodite apparently thinks so. Children of Aphrodite can speak and understand French. Why? Because it's the language of love, of course.
    • Subverted in Son of Neptune. Frank and Hazel try to talk to each other in French, but they're pretty bad at it. It is probably because Canadian French and Creole French are somewhat different?
  • Evil Counterpart: The giants to the gods.
    • Porphyrion is this to Zeus/Jupiter.
    • Polybotes to Poseidon/Neptune.
    • Alcyoneus to Hades/Pluto.
    • Enceladus to Athena/Minerva.
    • Otis and Ephialtes to Dionysus/Bacchus.
    • Clytius to Hecate/Trivia.
    • Subverted with Damasen, who is the good counterpart to the war god Ares/Mars.
    • Also Alcyoneus' lair to Camp Jupiter.
    • Jason, Piper, and Leo each have an evil counterpart to themselves in "The Lost Hero".
      • Jason has Lityerses, a handsome and skilled swordsman who uses a golden sword and has scars on his body like Jason does, but he is arrogant and intentionally flaunts his attractiveness, unlike Jason. In even further opposition to Jason, who cares deeply for his sister Thalia, Lityerses cares very little for his sister, who was turned to gold by their father King Midas. Both Jason and Lityerses like Piper, as well.
      • Piper has Medea, another attractive individual who can charmspeak like Piper, but uses it for her own gain, unlike Piper. She also has connections to the Giants, like Piper does. Unlike Piper, Medea is confident in herself and her abilities. Both women have had a relationship with a hero named Jason, although Piper's was not real but Mist-induced (although it does eventually happen). To make it even worse, Medea manipulated Piper's father Tristan McLean's assistant Jane into tricking Tristan and allowing him to be kidnapped by Enceladus, who tried using him to blackmail Piper into betraying Jason and Leo.
      • Leo has two. The first is the Cyclops Ma Gasket, who is immune to fire and a skilled mechanic like Leo is, but uses her skills against the Olympians. In opposition to Leo, Ma Gasket is the eldest member of her family who didn't leave her sons Sump and Torque to fend for themselves as Cyclopes should, while Leo is one of the younger members of his family who was thrown out into the streets by his family after his mother's death. The second is Khione, the goddess of snow. While Leo can control fire, Khione controls ice. They both have similar parentage as they are both a child of a god: Leo is the son of Hephaestus, while Khione is the daughter of Boreas.
  • Exploding Fish Tanks: What did you think when you put Percy in an aquarium exhibit?
  • Expy: Piper's father is mentioned to have played The King Of Sparta and there is mention of The Poster which the two considered funny until it hit the internet.
    • There are several similarities between Annabeth and Reyna, the praetor of Camp Jupiter, in The Mark of Athena. Annabeth immediately notices some of them when she first meets her.
      • Both are considered the female leaders of their respective camps and are highly respected by their fellow campers.
      • Both have or were going to have a romantic relationship with the male leaders of their camps: Annabeth has one with Percy, while Reyna would have had one with Jason if he hadn't been kidnapped by Hera/Juno.
      • Both refuse to believe the worst has happened to their significant other. Annabeth is out searching for Percy throughout The Lost Hero, while Reyna refuses to hold an election for Jason's replacement as praetor despite others' pestering her for it, as she believes Jason is still alive.
      • Both of their love interests (Percy for Annabeth and Jason for Reyna) have a problem of being unable to pick up on Annabeth and Reyna's emotions or feelings.
      • Both of their love interests denied or deny an attraction to them. Percy doesn't realize how much he loves Annabeth until The Last Olympian, while Jason repeatedly tells his girlfriend Piper that he never was in love with Reyna. Despite Jason saying this, after he reclaims his memories in The Lost Hero, his memories of Reyna make him question his feelings toward Piper.
      • Both were involved in a love triangle with their love interest: Annabeth was in a love triangle with Percy and Rachel Elizabeth Dare in The Battle of the Labyrinth and The Last Olympian, while Reyna was in a love triangle with Jason and Piper McLean in The Mark of Athena, although Jason states that he never felt that way towards Reyna, even though Piper believes otherwise.
      • Both have been on a quest with their love interest; every quest Annabeth ever went on was with Percy (with the exception of her mission to reclaim he Athena Parthenos from Arachne) while Reyna and Jason once visited Charleston, South Carolina on a quest together.
      • Both of their love lives were interfered with by Hera/Juno and Aphrodite/Venus; Hera/Juno kidnapped Percy and Jason and sent them to the opposite camp, while Aphrodite/Venus promised to make Annabeth and Percy's love life interesting (r.e. Tragic) and said something to Reyna in Charleston that caused her to never act the same around Jason again.
      • Both are forced to hold an expression of fearlessness in public to prevent spreading panic throughout their forces. Annabeth even notices this whenever she first meets Reyna in The Mark of Athena, and it is implied Reyna notices this as well.
      • Both are very good at reading others' emotions and deducing motivations and/or feelings, while also hiding their own.
      • Both have a fondness for architecture, as they both were seen admiring New Rome in The Mark of Athena.
      • Both have knowledge of the others' culture, and do not judge them for it.
      • Both are the children of a war goddess; Annabeth is the daughter of Athena, the Greek goddess of wisdom, war, and battle strategy, while Reyna is the daughter of Bellona, the Roman goddess of war.
      • Both had a crush on Percy Jackson. Annabeth states that she has a crush on Percy since they first meet when they were twelve, while Reyna attempts to convince Percy to become praetor and become her "friend", which both Percy and Annabeth interpret as Reyna making a move on him.
      • Both visited Circe's Spa and Resort in the Sea of Monsters and met the other while they were there; Annabeth and Percy visited the Spa while looking for the Golden Fleece, and Reyna was one of Circe's assistants at the Spa and Resort. The two met while there; Reyna was one of Circe's attendants who combed Annabeth's hair and gave her a makeover.
      • Both are considered scary by a demigod of the prophecy; Hazel and Frank are both somewhat intimidated by Reyna, while Leo has been scared of Annabeth ever since they met at the Grand Canyon while wearing her "give me Percy Jackson or I'll kill you" look.
      • Both ran away from home; Annabeth ran from her father and stepmother's house in San Francisco after being attacked by spiders for three nights in a row, while Reyna and her sister Hylla ran away from San Juan and became Circe's attendants at her spa.
    • Jason and Percy are nearly expies of one another and share a lot of similarities, but have enough differences to be considered very different from each other. They both acknowledge their similarities in The Mark of Athena and The House of Hades, and even act somewhat similar whenever they both say that they feel that they are failing since they aren't used to being among demigods of equal stature.
  • Extremely Short Time Span/Time Bomb/Cosmic Deadline
  • "Fantastic Voyage" Plot
  • Fauns and Satyrs: They are considered to be the same thing.
    • Hedge mentioned that "Fauns are Roman." Seeing as how Roman demigods are quite different from their Greek counterparts, it wouldn't be surprising if this was the case with other magical creatures.
      • Possibly justified. They could have indeed become more or less the same if people began to believe that they were with different names. In the first series, it was said that the Titans Helios and Selene faded after the Romans reassigned their duties over the sun and moon to Apollo and Artemis, so it's not unprecedented for them to have been blended them together into the same creature/species.
      • And as of Son Of Neptune, we've seen fauns, and they are, in fact, not the same as satyrs, to Percy's confusion.
  • Feminist Fantasy: Reyna's arc in The Blood of Olympus is about her coming into her own as a daughter of Bellona, admitting that she shouldn't define herself by the men in her life, and dealing with Straw Misogynist Orion (with the help of Thalia Grace and her sister Hylla, both leaders of famously all-female fighters).
  • Fetch Quest: Annabeth's charge in Mark of Athena.
  • Flirting Under Fire
  • Fire-Forged Friends: Played with. Leo and Piper think they've been friends with Jason for a while, but even when this is proven to be false, they're still tight from the time they have spent together.
    • All of the Seven by the end of Mark of Athena.
  • Five-Man Band: In 'Mark of Athena'
  • Foreshadowing: When Reyna summons Percy to a private meeting with her in the principia, he sits in the other praetor's chair while waiting for her.
    • The Mark of Athena brings up a few times the fact that all children of Athena are afraid of spiders.
  • Gaias Revenge: In the literal sense. Gaea seeks to take revenge on the gods for usurping her children, the Titans. Interestingly, she does not have nature-based powers, as in the original mythology this was the domain of Pan.
  • Genius Ditz: Quite a lot of characters, including Leo, Frank, Percy, and Ella.
  • Gentle Giant: In their native home, the Hyperborean giants are peaceful. Percy and Co. are still use one to help them escape from some griffins.
    • Tyson also technically counts.
    • Damasen, as the opposite of Ares, is the most benvolent of the Giants.
  • Getting Crap Past the Radar: Schist.
    • Much of Percy's interpreting for Arion consists of this.
    • In "The Lost Hero", it mentions that Drew dumped, "everything from the bathroom waste bin- some pretty nasty things- all over the floor".
    • Also, Piper's father says that he thinks "That Indian and Greek stuff is all bull "
    • In The Son of Neptune, the Amazon, Kinzie, blatantly flirts with Percy, telling him if he ever needs a new girlfriend, she's available. While we're never told exactly how old Kinzie is, it's safe to assume she's an adult (since not many teenagers can get jobs as security guards), whereas Percy is only sixteen.
      • Plus, you have to wonder what Kinzie was thinking when she says Percy would look great in an iron collar and an orange jumpsuit.
    • In the same vein as Percy and Kinzie, The House of Hades also gives us Leo and Calypso. There was also a part like this back in the first series, though with Percy instead of Leo. Keep in mind that, again, Percy and Leo are only about 16, whereas Calypso is over 3000 years old.
    • From The Mark of Athena we have one scene where Percy and Annabeth fall asleep together on the ship. With some of the dialogue, one has to wonder if the original scene was a Sexy Discretion Shot so that Riordan could get it past the radar.note 
      Annabeth: We just fell asleep together! We didn't do anything.
      Percy: We kissed a few times...
      Annabeth: Not helping!
      • Frank averted his eyes when he found them. It doesn't get much more blatant than that.
    • Percy referring to Ephialtes as "The Big F."
    • There is a scene in The Son of Neptune where Hazel takes Percy to the back of R.O.F.L. to help him get better and to call Camp Jupiter, while Frank goes outside to fight some monsters. Later, we find out that Percy and Hazel used an Iris Message to call Reyna...who at the time was taking a bath...did I mention that Iris Messages are basically video chat?
      • Frank also says he would have paid to see that (meaning he would have liked to see Reyna's shocked look, not her in the bath...or would he?)
    • One of the acronyms on Asclepius's plaque is BAMF.
  • Good Scars, Evil Scars: Jason has a little one on his lip from trying to eat a stapler when he was two. Lit, Midas' son and bodyguard is covered in them.
  • G-Rated Drug: Dakota, a son of Bacchus, is addicted to Kool-Aid. With three times the normal sugar.
  • Grievous Harm with a Body: Percy defeats Polybotes by smashing his face in with Terminus' head.
  • Grimy Water
  • Gunship Rescue: Subverted. The Argo II doesn't get to Camp Jupiter until the day after the invasion.
    • It does, however, pull off a lot of rescues in Mark of Athena.

    Tropes H-M 
  • Harping On About Harpies: In Son of Neptune. However, Phineas is not having as much trouble with them anymore, basically turning his curse into theirs, with one exception. In order to get his help, the Power Trio has to capture the harpy Ella, and give her to him. This isn't exactly what happens.
  • Have You Seen My Gods: Olympus has been closed and the gods have gone MIA. Subverted. Even though Zeus ordered it, thinking it would lull Gaea back to sleep, several of the gods, thinking Zeus is making a mistake, have defied his orders. They had to do so covertly, however.
    • In The Son of Neptune he seems to have changed his mind (or bowed to the inevitability of the others' meddling making the plan moot), allowing Mars to order a quest. That, or his more responsible Jupiter aspect can no longer ignore the situation and knows something must be done.
    • In The House of Hades the impending war between the Greeks and the Romans has caused the Greek and Roman sides of the gods to fight one another, rendering most major gods incapacitated unless one of their children does something particularly spectacular.
  • The Heavy: What with Gaea being a Non-Action Big Bad and all, each book has at least one villain that give the heroes more trouble than others.
    • The Lost Hero: Khione.
    • The Son of Neptune: Alcyoneus.
    • The Mark of Athena: Arachne and the eidolons.
    • The House of Hades: Clytius and Pasiphåe on the surface; Tartarus himself in the eponymous pit.
  • "Hell Yes" Moment: The Fifth cohort after Percy, Hazel, and Frank storm the defenders' fortress during the war games. The entire legion, especially Reyna, when they pull a Big Damn Heroes during the invasion. Not to mention "TWELFTH LEGION FULMINATA!"
    • Frank taking charge of a ghostly Roman army in the House of Hades after an emergency promotion to freaking praetor.
    Nico: Now that's more like it. Let's turn this tide!
  • Heroes Unlimited
  • Heroic Sacrifice: Percy is initially thought to have killed himself to take out a ghost army that threatened Hazel and Frank. Then, after defeating Alcyoneus, they go back to the glacier only to find Percy there, totally unperturbed at bringing a glacier down on himself.
    • Played Straight in The Mark of Athena when Percy(he really does tend to do this often) throws himself down to Tartarus to protect Annabeth. And there are only a few thousand supercharged monsters in his path!
    • Leo Valdez at the end of The Blood Of Olympus.
  • Historical In-Joke:
    • The American Civil War (1861-1865) was at least partially a war between Roman half-bloods and Greek half-bloods. (You should see Hazel's reaction when she finds out the Romans were in the Confederate side).
    • The last child of Hephaestus that could create fire before Leo was Thomas Faynor, who started the Great Fire of London in 1666.
    • Frank's ancestor was blamed for the 1906 San Francisco Earthquake, though it turns out he didn't do it.
    • Jack London was a son of Mercury whose Wolf House burned down because it was built on sacred ground.
    • Inc. was apparently founded or taken over by actual Amazon warriors and used to ship goods to Amazons worldwide.
    • Johnny Weissmuller, US National Championship and Olympian (the sport version) swimmer, was apparently a merman trained by the ichthyocentaurs).
  • Hoist by His Own Petard: Octavian, and quite literally at that.
  • Holding Hands: Percy and Reyna after they defeat the invasion and he gets promoted to praetor.
    • Everyone who's paired off by book three. And by "Everyone" we mean "Everyone except Leo". Mostly.
    • Nico and Will though whether as a romantic gesture on Will's part or not is kind of ambiguous. He is a medic and diagnoses Nico through it.
    • A very sweet yet very tragic version with Percy and Annabeth. They're holding hands as they fall into Tartarus together.
    • The entire group in House of Hades during an emergency shadow-travel trip.
  • A House Divided: The Greeks and Romans need to ally themselves so they can defeat Gaea. Otherwise, they are SCREWED.
  • Human Popsicle: Quite a few, from those in Boreas' fortress and the Hunters for a short time during the battle at the Wolf House. Midas' "house guests" probably count, too.
  • Incest Is Relative / Kissing Cousins
    • It is mentioned that unless you have the same godly parent, it isn't creepy for two demigods to have a relationship.
  • Indy Ploy:
    Octavian:So you do have a plan?
    Percy:We go to Alaska as fast as possible...
    Hazel:And we improvise.
    Frank:A lot.
  • Inelegant Blubbering: The Earthborn. "Yay-son! Where Yay-son? Kill Yay-son!"
  • Informed Attribute: We are repeatedly told that the giants are the greatest threat Olympus has ever known and worse than the Titans. So far, the giants have been defeated by a few demigods or in a few cases only one. A god is only needed due to their special immortality. The giants as a whole lack the vast magical powers that make the Titans so dangerous.
    • We are told Jupiter is supposed to be a more fatherly, responsible version of Zeus. All of his confirmed actions paint him as being not so different. He is still prone to affairs and selling others out to cover up his crimes. Juno confirms that like Zeus Jupiter has a long history of letting his pride get in the way of his duties only to have to change his stance later.
  • Instant Awesome, Just Add Dragons: Festus
  • Interspecies Romance: Ella and Tyson
    • As well as Coach Hedge (a satyr) and Mellie (a wind spirit), who are married and expecting a child by House of Hades.
  • Invisible to Normals: The entrance to Camp Jupiter and New Rome.
  • Involuntary Group Split: At the end of Mark of Athena.
  • I Reject Your Reality: Like in the last series, Zeus/Jupiter refuses thanks to his pride. He insist the giants can be put to sleep again if the Olympians do nothing and if they giants do rise the Olympians can defeat them without demigod help despite knowing flat out that it is impossible to kill them without a demigod. Once again, gods and heroes have to go behind his back to save the day. By the time he might have wised up it is too late to do anything. Juno claims his has a long history of doing this.
    • However, by the end of Blood of Olympus Zeus gets to tell his side and it turns out that Juno's plotting has its own drawbacks. Namely, by locking down events in accordance with the Prophecy of Seven, Juno has made it impossible for the gods (or anyone other than Juno's chosen Seven) to confront Gaea. Had the Prophecies not been forced to go down a certain path, things might have unfolded differently.
  • It Belongs in a Museum: Piper initially believes this of the dagger she gets from Annabeth (it had once belonged to Helen of Troy). Annabeth tells her that they're surrounded by Ancient Greek stuff at camp, but weapons like that are the heritage of the demigods and are meant to be used.
    • Annabeth says this about Arachne's tapestries.
  • Jedi Mind Trick: Charmspeaking.
  • The Last of These Is Not Like the Others:
    The coffee shops were doing a brisk business, and street musicians filled the air with the sounds of guitar, lyre, panpipes, and armpit noises.
  • Late-Arrival Spoiler: After taking most of The Lost Hero to be revealed, Gaea being the new Big Bad is spoiled in the first chapter of Son of Neptune.
  • Let's You and Him Fight: Percy and Jason duke it out when possessed by evil spirits.
    • In the audiobook Son of Sobek, Percy crosses paths with Carter Kane while they are both hunting the titular giant crocodile, and they get into a fight when Percy mistakes Carter for a rogue demigod.
  • Literal Cliffhanger
  • Locked Out of the Loop: The gods, Chiron, and Lupa are keeping a big secret. The Lares of Camp Jupiter, too.
    • A bit of story hints is that Chiron never mentioned the Roman camp because he swore not to - chances are, Lupa wouldn't mention the Greek camp either.
    • Nico has been keeping the secret as well; Percy in particular is less than thrilled by this.
  • Long-Lost Relative/Everyone Is Related: Jason and Thalia have the same mother, as well as being kids of the same god (Jupiter/Zeus respectively) but in different aspects.
    • Hazel is Nico's sister and Frank turns out to be a descendent of Poseidon, so Percy and Tyson adopt him as their brother.
    • Leo is related to Sammy Valdez, Hazel's boyfriend from back during World War 2—specifically, he is Sammy's great-grandson.
    • Heracles & Chrysaor to Jason and Percy. They try to kill each other.
  • Loophole Abuse: The Amazons get their queens crowned by fights to the death. Given the whole death thing, there's no law against repeat matches- so when an old queen comes back from the dead wanting a rematch (and being able to return even if she dies in battle), you can bet that Hylla was going to get out her law-fu ASAP.
  • Kill It with Ice: The result of getting hit by Hyperborean breath. Percy uses this to his advantage.
    • Khione, the goddess of snow, is fond of doing this.
  • Love Dodecahedron: Shaping up to be one between Piper, Jason, Reyna, Percy, and Annabeth, in that order.
    • Love Triangle: There is potential between Hazel, Leo, and Frank, but it remains to be seen if there will be one.
  • MacGuffin: Athena Parthenos.
  • Mama Bear: An evil example with Ma Gasket.
  • Maybe Ever After: The status of Nico and Will's relationship by the end of Blood of Olympus.
  • Meet Cute: Piper to Jason.
  • Mistaken for Spies: And Percy hates it.
  • Muskeg Sucks
  • My Greatest Failure: The Romans lost their eagle standard in a disastrous campaign in Alaska in the 1980s. They're still sore about it.
  • Myth Arc: The Gigantomachy.
  • Mythology Gag: Just for Pun

    Tropes N-S 
  • Negate Your Own Sacrifice: Attempting to do this becomes a major plot point in Blood of Olympus.
  • New Powers as the Plot Demands: On a series level, not within the series. Apparently certain children of Hephaestus can wield fire and all children of Aphrodite have apparently always been able to speak French, and some can charm-speak people into doing what they want. Justified as it's stated that controlling fire and charmspeaking are ridiculously rare, though some fans still think Aphrodite's children speaking French came from left-field.
    • There was only one named camper from the Aphrodite cabin in the first series, and she was never in a situation where speaking French would have been remotely helpful. Combining that with the fact that Piper seemed honestly surprised she could speak it, and it's fairly justified.
    • It was also never really delved into in the first series just what powers were granted to each god's children, and they seem to vary quite a lot among themselves as well.
    • House of Hades has this within the series. Without any training, Hazel can manipulate the mist to do magic better than an immortal sorceress. Piper's own charmspeak and powers of love can now manipulate machines and have an effect on the physical world instead of only influencing people's behavior.
      • In Hazel's case, it's not that she is a master of the Mist, but that she knows how to use it to her fullest potential. Like Charmspeak, it's easier for her to offer suggestions and make her enemies think that they've got her on the ropes, rather than directly contradict them by imposing her own reality.
  • Nobody Poops: A rather jarring example in House of Hades: Percy and Annabeth spend the majority of the book in Tartarus, which is of course a hostile landscape with no decent bathroom facilities. It's never addressed.
  • Not Listening to Me, Are You? This exchange:
    Percy: Hey, how's it going?
    Annabeth: Uh, no thanks.
    Percy: Okay... have you eaten anything today?
    Annabeth: I think Leo is on duty. Ask him.
    Percy: So, my hair is on fire.
    Annabeth: Okay, in a while.
  • Noodle Incident: What exactly happened in Albania?
  • Official Couple: Played with as of Son of Neptune. Hazel and Frank share a kiss after defeating Alcyoneus, but we don't know if they're officially going out by the end.
    • Percy and Annabeth. Later, it seems Jason and Piper have become this as well.
    • By the end of the series, Leo and Calypso.
  • Oh, Crap: Alcyoneus after Frank and Hazel drag him into Canada. Polybotes when he realizes that Percy's got a god on his side.
  • One-Man Army: It was mentioned that Greek Heroes are trained to handle things solo compared to the Romans who rely on military teamwork. Percy's fighting style is repeatedly mentioned to be un-Romanly because of this.
  • One Steve Limit: Averted; though it'd be very hard to confuse, Midas mentions his daughter being named Zoe (not to be confused with the first series' Zoë Nightshade). There's also a Jason at Camp Half-Blood playing Capture the Flag in Titan's Curse. The first cycle also had Michael Yew from Camp Half-Blood, while the Roman camp has Michael Kahale and a (deceased) Michael Varus.
    • Borderline cases: a few characters are named after famous mythological or historical figures, but given the series, the originals are sometimes mentioned as their own characters: Dionysus' twin sons are called Castor and Pollux, Octavian mentions his ancestor Octavian Augustus, and Medea remembers the first Jason very well.
  • Only the Knowledgable May Pass: The ghosts think they have this. In fact, Annabeth guesses and bluffs most of it, though she does have the advantage that many of their "mysteries" were hinted at in the decor.
  • Our Dragons Are Different: Festus is an automaton constructed from celestial bronze.
  • Pirate: Chrysaor is a son of Poseidon who is an even better swordsman than Percy, along with a crew of cursed dolphin-men.
  • Pirate Booty: Chrysaor's ship is full of plundered treasure. The heroes sacrifice it to Dionysus/Bacchus to gain his assistance in the fight with Otis and Ephialtes.
  • The Plan: the Senates decision to send Percy and company to Alaska in a leaky dinghy.
  • Poisoned Chalice Switcheroo: Percy manages to pull this on Phineas with the gorgon blood. He wins. Doubles as Out-Gambitted.
  • Popular Is Dumb: Drew Tanaka is Aphrodite cabin's Alpha Bitch head councilor but isn't too quick on the uptake.
  • Protect This House: Frank, Percy and Hazel are surrounded by Laistrygonians in the Zhang family home. Averted in that they don't defend the homestead so much as use its defenses to make a break for it.
  • The Power of Love: This is how Piper saves Jason. Either that or he was Only Mostly Dead.
    • Arguably, while she does have feelings for Jason, it may not have had anything to do with that— she simply Charmspoke his soul to keep it from going to Hades. Still technically fits the trope, since only children of Aphrodite, goddess of love, can do this...
    • It was revealed in the second book that the Doors Of Death are open and heroes can escape death for the same reason that monsters reform almost instantly. The Power of Love probably helped, but Gwen got back by herself, so...
  • Power Trio: Jason, Leo, and Piper.
    • Percy, Hazel, and Frank.
    • Throughout the whole of Mark of Athena, the seven of them regularly form into different Power Trios
  • Precision F-Strike: Except that the word "freaking" is used instead of the normal phrase. Going toe-to-toe against an ice goddess is definitely one of Leo's Crowning Moments Of Awesome.
    Leo: See, lady, that's what happens to snow in Texas. It. Freaking. Melts.
  • Pre-Asskicking One-Liner: "My turn."
    • "You. Me. To the finish."
  • Pre-Mortem One-Liner: Percy gets an awesome one in on Polybotes.
    Percy: I'd like you to meet my friend Terminus. He's a god. *thunk*
    • Frank also has a good one on Alcyoneus
    Frank: Welcome to Canada, idiot.
  • Prophetic Fallacy: Several new prophecies are mentioned in Son of Neptune, but are only half complete, leaving their ultimate meaning unclear.
  • Prophecies Rhyme All the Time: No one ever asks how they still rhyme after being translated from Latin
  • Prophecy Twist: Spoofed by Mars in Son of Neptune. When asked by Octavian for a prophecy, a cryptic poem to guide the quest, Mars writes down the most bluntly straightforward prophecy ever with absolutely no ambiguity whatsoever.
  • Purple Is Powerful: The demigods in Camp Jupiter wear purple shirts.
  • Put on a Bus: As the series is an ensemble, focusing on several new characters as well as old ones, many of the main characters from the original Percy Jackson series take on secondary or cameo roles in the first two novels.
  • Race Against the Clock: Before solstice! Before the Feast of Fortuna! Before Nico suffocates! Before Percy and Annabeth die to thousands of the worst monsters in history!
  • Raised by Wolves: Camp Jupiter, specifically by the wolf-goddess Lupa who raised Romulus and Remus
  • Real Men Wear Pink: Minor character Butch, a bulky dude with a shaved head and a face like a pile of bricks. His mother is Iris, the Rainbow Goddess. Got a problem with that?
  • Recycled IN SPACE!: The Argo II In-Universe.
  • Redemption Equals Death: Octavian
  • Remember the New Guy:
    • The Mist is used, to get Jason's classmates to think that he had always been in their class. Leo Valdez believes that Jason was his best friend, and Piper McLean even has memories of dating Jason.
    • The Roman Aspects were not mentioned at all in the original Quintet... however The Lost Hero justifes this in that the Greek and Roman Aspects do not get along at all, hence the need for them to remain hidden from each other. In fact, a clever reader can point out that the only ones explaining the roman aspects are, of course, Romans, and that the Romans felt this way about the Greeks. (Since Lupa's not one to tell!)
    • Related, Jason Grace. Thalia didn't mention having a little brother for several reasons, among them being that the events surrounding his disappearance were quite traumatic for her and that she thought him dead until this series began.
  • Reptiles Are Abhorrent: Basilisks are abhorrent, and they destroyed Frank's bow!
  • Roman Holiday: Tiberius and Rhea Silvia appear as Gregory Peck and Audrey Hepburn, then drive Annabeth away on a vespa.
    • Percy mistakes them for the cast of Mad Men.
  • Rummage Fail: When facing off against Lycaon, a nervous Leo reaches into his tool belt for a weapon and initially grabs breath mints before hastily swapping them for a hammer. He hopes no one noticed. This is turned into a Brick Joke seconds later when the perspective switches to Jason, and while evaluating his assets, he thinks about "Leo, who apparently thought he could defeat the armies of darkness with breath mints."
  • Sadistic Choice: In the second excerpt of Son of Neptune, "June" (Juno) tells Percy that he can endure suffering and tragedy and maybe save his friends, or live happily under the ocean while the world ends.
    • Jason and Percy become possessed by ghosts and attack each other. Piper is ordered to decide which one will survive.
    • Also keeps with the History Repeats theme of the series, as Hercules/Heracles was offered essentially the same choice.
    • Several characters outright state that Percy's gonna have to make another one sometime in the future, but likely won't be able to, due to his fatal flaw: loyalty to his friends above all else.
    • Plays out twice over in The House of Hades: Percy opts to fall into Tartarus with Annabeth, leaving Frank to hold the quest together, just as Mars predicted. At the end, he and Annabeth are forced to leave Bob and Damasen behind to fight off Tartarus and operate the Doors of Death while they escape.
  • Save Your Deity: Jason, Piper, and Leo have to rescue Hera before the solstice.
  • Sealed Good in a Can: Percy was kept asleep by Juno for several months until the time was right for him to go to Camp Jupiter.
    • Hazel's time in the Underworld also qualifies.
  • Secret Test of Character: Percy thinks "June" is trying to put him through one in the beginning of Son of Neptune.
    • Hazel thinks it's a test too - she orders Frank not to fire, because she thought Percy was a god in disguise.
  • Secretly Wealthy:
    • Piper could probably try and tell her old classmates the truth: that her dad's Hollywood A-lister Tristan McLean, but she knows they'd never believe her.
    • Insecure, awkward Frank lives with his very wealthy grandmother.
  • Self-Made Orphan:
    • This is the reason why Leo is initially afraid of his fire powers: when he was a kid, Gaia visited the workshop where he and his single mother were, with the firm intention of preventing Leo from becoming a powerful enemy; Leo used his powers to try and protect his mother, but lost control and started a fire, accidentally killing her instead. He still has his father, but since he's the god Hephaestus whom Leo only met at 15...
    • Hazel killed her mother and herself to stop Gaea from raising Alcyoneus back in 1942.
    • Reyna killed her and Hylla's father after his obsession with Bellona turned him into a Mania.
  • Seven Token Band: So far, the seven demigods of the prophecy include a Native American girl (Piper), a Latino (Leo), a Chinese-Canadian (Frank), a black girl (Hazel), and two white guys and a girl (Jason, Percy and Annabeth).
    • Particularly jarring when compared to the first series, where there were almost no minority characters. Makes some sense, as Rome was much more diverse than Ancient Greece.
    • And we can also add Nico, who turns out to be gay.
  • Six Student Clique: In Mark of Athena, albiet with 7 members.
    • The Head — Percy and Jason
    • The Muscle — Frank (Shapeshifting helps)
    • The Quirk — Leo
    • The Pretty One — Piper
    • The Smart One — Annabeth
    • The Wild One — Hazel (Comes from a different era and is technically dead).
  • Sickening Sweethearts: Tiberinus and Rhea.
  • Sir Swears-a-Lot: Arion, according to Percy.
  • Ship Tease: Percy and Reyna as well as Reyna and Jason. While she and Jason weren't a couple, Reyna is shown to be fond of him. It's also fairly common for praetors to become romantically involved. Then Jason disappears for eight months and Percy becomes the new praetor.
    • Nico and Will Solace in Blood of Olympus
  • Shout-Out: Jason suggests Leo jump off a building and yell "Flame on!"
    • Iris owns a shop with the acronym R.O.F.L whose workers are called ROFLcopters.
    • Whilst working on the warship that will carry the heroes to Greece, Leo complains about the samophlange.
    • The name "Perry" getting mentioned in the scene with Phineas.
    • Butch, the stable keeper at Camp Half-Blood, is a son of Iris, the Rainbow Goddess. He likes Pegasi. Remind you of anypony?
      • Not only that, but in Son of Neptune, Alcyoneus calls Arion a "little pony".
    • Frank mentions in Mark of Athena that he saw a TV show where they proved that Archimedes Death Ray couldn't have worked.
    • In The Demigod Diaries Leo starts singing the theme song of Psych.
    • While fighting the eidolodons, Leo says "One basketball to rule them all."
    • Bacchus incorrectly refers to Jason Grace as John Green.
    • While steering the Argo II, Coach Hedge starts to sing the Pokémon theme song, except replacing Gotta Catch Them All with Gotta Kill Them All.
    • In Mark of Athena, Tiberinus and Rhea Silvia appear as "Audrey Heburn and Gregory Peck". Percy mistakes them as the actors from Mad Men.
    • Kymopoleia uses a kind of shallow pan to create sea storms. When it isn't in use, she uses its straps to wear it across her back "Captain America-style."
  • Start of Darkness: It's very possible that The House of Hades is this for Percy. He's growing increasingly protective of Annabeth, to the point that at times, the extremes he's willing to go to in order to protect Annabeth frighten her.. Thankfully, he appears to have taken steps to avoid this in Blood of Olympus.
  • Shown Their Work: Rick Riordan has been around in real life, and used to be an editor for mythology books. And it shows. He actually gets a lot of common misconceptions correct, such as how Thanatos is actually Death itself, and that Pluto was not just the lord of the underworld but also the god of wealth and the earth.
  • Staying Alive: Gaea grants her minions this.
  • Stealth Pun: In Mark of Athena, Leo (upon hearing that there is a bounty on their heads) makes a wisecrack about being worth two, or three Franks. Franks. As in, Francs.
  • Steam Punk: Leo describes the Hephaestus cabin as steampunk. The term also applies to Festus.
  • Summon Bigger Fish: Summon Hyperborian giant, actually. (Or at least run underneath one.)
  • Summon Magic: Frank's godly parent gives him a spear tipped with a Dragon's Tooth that can be used thrice. Breaking it off in the ground creates a zombie warrior roughly akin to the Terminator.
    • Nico uses the Scepter of Diocletian to call up a Roman ghost-legion in The House of Hades.
  • Suspiciously Similar Substitute: Reyna and Piper.
  • Supernormal Bindings: Thanatos, god of death, has been captured and bound with chains. The only thing that can break them is the flame of life, meaning Frank has to burn off part of his life force to cut through them.
  • Swiss-Army Weapon: Jason's weapon begins as a gold coin; a toss causes it to become an Imperial Gold sword or javelin on heads or tails respectively.
  • Switching P.O.V.: Each character gets their turn to have their perspective told (from a third-person limited POV). To help with this, in lieu of chapter titles Riordan just puts "[CHARACTER NAME]" in ALL CAPS.

    Tropes T-Z 
  • Taking You with Me: Averted. Hazel and Frank are afraid Percy has done this to get rid of the Roman shades in Alcyoneus's lair, but the readers know he's fine because his water gifts will protect him from the fall.
    • Played straight during Hazel's first life, when she discovers she was being manipulated by Gaia into reviving Alcyoneus, the giant. She uses her powers as a daughter of Pluto to bring down the cave where the giant was forming, killing herself, her mother and effectively delaying the giant's revival for several decades.
    • Arachne uses her web-lines to drag Annabeth down to Tartarus with her, with Percy going along for the ride.
  • Team Mom/Team Dad: Lupa and Chiron.
  • Team Pet: Festus.
    • Hannibal the elephant for Camp Jupiter as a whole.
  • Teeth-Clenched Teamwork: There is quite a bit of animosity between Hera and more than a few demigods, particularly Annabeth and Thalia, but as Piper points out, they will have to work together to beat the Giants and Gaia.
  • Textile Work Is Feminine: Subverted. Annabeth has to weave, but it is part of a deadly test and is not presented as feminine.
    • Note, though, that it's a carryover from Greek mythology in which this trope was frequent (and commonly associated with Athena).
  • They Plotted a Perfectly Good Waste: see Gunship Rescue above.
  • Think Nothing of It: Tiberinus to Rhea.
  • ¡Three Amigos!: Jason, Leo, and Piper. Also Percy, Frank, and Hazel. In the final book, we have Nico, Reyna, and Coach Hedge.
  • Threshold Guardians: Hercules guards the entrance to the Mediterranean Sea.
  • Title Drop: Hera/Juno does it while speaking with Jason about his destiny in the last chapter of The Lost Hero.
  • To Hell and Back: Percy has already been to Hell twice. He and Annabeth barely survive Tartarus in House Of Hades, which is more or less Super Hell.
  • Token Minority Couple: Frank and Hazel.
    • Before that, Sammy and Hazel.
  • Token Trio: Jason as the quest leader, Piper as the Native-American love interest and Leo as the Latino Best Friend.
    • Also in "The Son of Neptune" with Percy (white), Frank (Asian), and Hazel (black).
  • Too Dumb to Live:
    • Continuing on from the previous series, where the heroes tend to make the same mistakes. What is worse is the gods. Zeus knows the giants cannot be defeated without the aid of the demigods so what does he choose to do? Seal up Olympus and ignore the problem repeating the same mistake he made with the Titans. Throughout all of the books, Zeus makes a series of "too dumb to live" mistakes. Ladies and Gentlemen, the ruler of the world!
    • Alcyoneus, as pointed out by Frank - when you're unkillable as long as you stay in the boundaries of the state of Alaska, you really shouldn't hang out in the part of the state that's only 10 miles wide.
    Frank: "Welcome to Canada, idiot."
    • Bryce Lawrence trying to take on Nico and Reyna.
  • Touché: Gaea's grudgingly impressed by Percy's gamble to force her to choose him over Phineas.
  • Trojan Horse: Invoked by Octavian, who uses the "beware Greeks bearing gifts" line to try and incite conflict with the Greek demigods and so maintain his own power. It's not exactly a horse though, and nor is that actually the plan.
  • True Companions: Jason, Leo and Piper become this in the first book. Percy comes to consider Hazel and Frank as important to him as anyone from Camp Half-Blood. Mark of Athena solidifies all of the 7 into this trope.
  • Truly Single Parent: Aphrodite was born from the sea foam produced from Ouranus's body when it fell into the ocean.
  • Two Guys and a Girl: Both trios for both books 1 and 2.
  • Two Lines, No Waiting: Riordan weaves in multiple secondary arcs and character arcs.
  • Underground Level: The final battles of book three are all underground.
  • Ungrateful Bastard: The Olympians in general tend to be this making one wonder how they are better than the Titans or giants. Demigods do them favors and the best you get is "Be grateful I do not kill you. In the last book, Zeus continues this trend by being proud of Jason one moment, but nearly killing him for questioning him in front of the other gods the next.
  • Unlucky Childhood Friend: Sammy Valdez.
  • Unusually Uninteresting Sight: Lampshaded when Percy runs through traffic with "June" Juno in Son of Neptune, most of the drivers, "just swerved and looked irritated, as if they had to deal with a lot of ratty teenagers carrying old hippie women across the freeway." It's The Mist again.
  • The Verse: It shares one with its prequel series (naturally) and The Kane Chronicles; in that series characters mention odd things going on in the United States as well. Solidified with Drew and Lacy's appearance in The Serpent's Shadow and Carter Kane appearing in The Son of Sobek.
  • Voluntary Shapeshifting: All gods can do this. All of Frank's family can too.
  • Walk into Mordor: In the Son of Neptune, the heroes can't just fly to Alaska because Zeus would kill Percy if he tried it.
  • Walking Wasteland: Hazel's life gives off this vibe. Wherever she goes, cursed gems and gold emerge from the earth that could kill innocents who picked them up. Pluto seemed to imply that most of his children are like this to some extent, Hazel just takes it Up to Eleven.
    • Nico too. In House of Hades, flowers and grass surrounding him dies when he gets stressed or angry.
  • White Male Lead: In a sequel series that seems to amp up the minorities compared to its predominantly Caucasian prequel, Percy and Jason still stand out as being the attractive, white, straight, cisgender male powerhouses among the Seven.
    • Subverted in Son of Neptune - Frank is the official leader of the quest. Also subverted in Mark of Athena where both Jason and Percy acknowledge Annabeth as the leader of the quest and responsible for searching out the Athena Parthenos. And again in House of Hades, when Jason promotes Frank to praetorship to lead the ghost army.
  • Window Love: Piper and her father after he's lost his memory do this through a video chat, with their hands touching on "opposite sides" of the computer screen.
  • Who Wants to Live Forever?: Mars shows that he has this sentiment when speaking to his son Frank about Frank's dying grandmother.
    " Life's only precious because it ends, kid. Take it from a god. You mortals don't know how lucky you are."
  • Winter Royal Lady: Khione.
  • The Windy City: Although Riordan doesn't seem to realize that Chicago is called the "Windy City" because of blustering politicians, not the weather. It is windy, though. Especially in the winter, when it's also freezing cold. Also, perceptions are important in this series, so if people think that Chicago is literally windy, that's where the Wind will go.
  • With This Herring: The only formal aid the Roman Senate gives Percy, Frank, and Hazel on their quest to save Camp Jupiter in Son Of Neptune is the piece-of-crap dinghy that sinks outside of Seattle.
  • Woman Behind The Man: Gaea, behind her son, Porphyrion
  • Womb Level: Tartarus (the realm) is literally the body of Tartarus (the Eldritch Abomination). When Annabeth and Percy fall down there, they sometimes wonder what part of his body they're walking on.
  • World of Pun: Riordan being Riordan, almost as frequent as snarking. Special mention goes to Lupa, directed to Jason: "As always, you are our saving Grace."
  • Worf Effect: The Giants. Despite being stated to be the greatest threat Olympus has ever faced and three revealed being so far created as direct counters to the most powerful Olympians they have all be defeated fairly easily. Possibly justified in Porpheryion at least was not at full power. That and Percy is just that badass, so a villainous example of Overshadowed by Awesome?
  • Wrench Wench: Leo's mom and his half-sister Nyssa.
  • You Can't Fight Fate: Played with. As the first series established, prophecies become worse if you try to avoid them, but Zeus points out near the end of the fifth book that there is never a single right answer to fate. There are three Fates, and each enables a different path to be walked, with different results, different paths. So while you can't fight Fate, Fate is perfectly okay with letting you take your sweet time fulfilling it.
  • You No Take Candle: Somewhat subverted with Ella, who despite her intelligence speaks like this because she is a harpy and that's just what they do.
  • You Are Worth Hell: The end of Mark of Athena ends with one of these, with Percy getting dragged down to Tartarus with Annabeth instead of just letting her go.

    Series Tropes 

Percy Jackson and the OlympiansChildren's LiteraturePeter and the Starcatchers
Hemlock GroveLiterature of the 2010sHex Hall
Percy Jackson and the OlympiansFantasy LiteraturePerdido Street Station

alternative title(s): The Heroes Of Olympus; Heroes Of The Olympus
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