Demigods: Main Characters (Percy Jackson) | Camp Half-Blood | Camp Jupiter
Gods: Major Gods | Minor Gods | Other Servants
Villains: Forces of Kronos | Forces of Gaia | Forces of Triumvirate Holdings
Others: Nature Spirits | Mortals | Monsters | Other | Demigods & Magicians
We're not quite sure what these characters are in The Camp Half-Blood Series (Percy Jackson and the Olympians, The Heroes of Olympus and The Trials of Apollo and companions like The Demigod Files and The Demigod Diaries) and unfortunately the Classical Mythology can't be trusted due to Rick Riordan's Artistic License. For the full list of characters, click here.
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Arion
Son of Neptune and Ceres, and the fastest horse on the planet.
- Child by Rape: He, along with his twin sister Despoina, was conceived when Poseidon tracked down Demeter and forced her to have sex. The reason why he's a horse is because his parents were horses at the time of mating.
- Cluster F-Bomb: According to Percy, Arion has a pretty filthy mouth.
- Cool Horse: The son of two Olympians, and as a result can "run like the wind over land and sea."
- Jerkass: Going by Percy's translations."I will trample you to death, silly Chinese Canadian baby man!"
- Lamarck Was Right: The immortal son of two Olympians born a horse as he was conceived while they were shapeshifted into horses.
- Metal Muncher: Arion eats gold.
- Only the Chosen May Ride: Arion is picky about his favorite humans, and only allows those he likes to feed and ride him. He once bit off the arm of an Amazon who tried to feed him.
- Tactful Translation: We never hear the cursing in full because Percy's the only one who can hear it. The one time we hear him from Percy's perspective, he's too tired to cuss.
- Sir Swears-a-Lot: According to Percy.
- Smug Super: He has an ego to match his top speed.
- Super-Speed: Arion is stated to be the fastest horse on the planet. This is apparently not an exaggeration since at one point he does 800 mph.
The Arrow of Dodona
Apollo’s talking arrow, who gives out advice, likely browses the Internet, exclusively speaks in Elizabethan English, and loves to insult Apollo.
- All the Other Reindeer: The other spirits of the Grove of Dodona look down on it.
- Cool Sword: A subversion of this and the Legendary Weapon trope. Riordan’s protagonists generally have magical weapons that aid them in battle. For example, Percy has Riptide, a magical sword that can turn into a pen and always returns to his pocket. Magnus Chase has Jack, a magical flying sword that can turn into a pendant and can cut between realms. By contrast, Apollo’s magical item is a talking arrow that’s special ability is browsing the Internet. It can only be carried at full length, insults him constantly, and gets angry if it’s used as weapon.
- Flowery Elizabethan English: Played for laughs with the Arrow. The Arrow inexplicably speaks with an Elizabethan accent. After talking with the Arrow, Apollo often accidentally starts speaking Elizabethan English, much to his annoyance.
- Like an Old Married Couple: Sometimes Apollo and the Arrow’s arguments have shades of this.
- Living Weapon: The Arrow has enough personality that it’s definitely sentient.
- Snarky Inanimate Object: Apollo and the Arrow’s snark at each other are some of the funniest moments in the series.
- Talking Weapon: What the Arrow is all about.
- Voice with an Internet Connection: It seemingly can access the internet, which it denies, but Apollo notes it has more useful advice whenever the local signal is strong.
- Volleying Insults: The Arrow’s favorite thing to do. Apollo reciprocates.
- Ye Olde Butcherede Englishe: Its Elizabethan English comes across as this, using words like "skedaddleth", which Apollo lampshades.
Chrysaor
The Golden Warrior. Son of Poseidon and Medusa, brother of Pegasus and half-brother of Percy.
- Ambiguously Human: He's born of gorgon blood and seafoam, which definitely indicates an inhuman nature. On the other hand, Greek mythology has never been bothered by things like "sense," so he might be human anyways.
- Attention Whore: He became a pirate for the attention since his brother got all the attention.
- Bounty Hunter: Though normally works as a pirate he comes after the crew of the Argo II since Gaea placed a bounty on them.
- Don't Look At Me: His face is never seen as he's always wearing a gorgon mask. When it's knocked off in his retreat he covers his face.
- Irony: He wants a bigger legend but the lack of information about him is what makes him so dangerous.
- Making a Splash: Implicitly, Percy tries to use his powers against him but has trouble because the water seems to be resisting.
- Master Swordsman: While Percy admits to being out of practise at the time, Chrysaor disarms him effortlessly when they cross blades and has his skill compared to that of Ares.
- Outside-Context Problem: As Percy tries to figure out how to beat him, he muses that Annabeth would usually mention a myth about their foe that could give him an idea. But since Chrysaor has no myths to his name, they're both in the dark.
- Pirate: Openly admits to this and often targets ships in the Mediterranean.
- Screw This, I'm Outta Here: His crew when Percy bluffed Mr. D was coming.
- Wake-Up Call Boss: He is the only character in the series that can defeat Percy when he's at the top of his game in a straight fight.
Circe
A sorceress or goddess who rules a island where she turns men into pigs.
- Beauty Is Bad: Very beautiful, but very evil.
- Does Not Like Men: To the point where she turns them into rodents and keeps them in cages.
- Evil Mentor
- Subverted, she would have been a evil mentor to Annabeth had she accepted her offer to be her apprentice.
- Played straight with Reyna and Hylla though. They weren't named back in Sea of Monsters, but Percy finds out from Reyna in Son of Neptune that he and Annabeth are to blame for them each being in their current positions. Whether they're grateful or not... isn't entirely clear.
- Karmic Transformation: She argues this is what the men turned into pigs are victim to.
- Lady of Black Magic: To a tee.
- Magic Is Feminine: Believes in this.
- Straw Feminist: To an absurd degree.
- We Can Rule Together: Offers this to Annabeth in the second book. She refuses, of course.
- Wicked Witch: Turning guys into rodents isn’t exactly good magic.
- Wizards Live Longer: She has magic powers and has been alive for centuries.
Halcyon Green
An elderly son of Apollo. He appears in The Diary of Luke Castellan, from The Demigod Diaries.
- Heroic Sacrifice: To let Thalia and Luke escape his mansion.
- In-Series Nickname: "Hal".
- Seers: Being a son of Apollo granted him the ability to see the future. However, after he told a girl about her future death, Apollo cursed him by taking away his voice and locking him in his childhood home.
- Tragic Keepsake: He kept the dagger from the girl he saved and passed it on to Luke (who would later pass it on to Annabeth).
The Labyrinth
A maze created by Daedalus to hold the minotaur that has since spread throughout the entire world.
- A.I. Is a Crapshoot: Averted, its AI functions perfectly. It just so happens that its function was to be deadly to everyone who enters it.
- Alternate Character Interpretation: In-universe; Apollo spends a while trying to puzzle out just what kind of being it was.
- Blue-and-Orange Morality: One of Apollo's guesses about its nature is that while it's required by the basest part of its being to be dangerous it doesn't really care about those who enter it.
- Death Trap: Just about every kind imaginable can be found within it.
- Eldritch Location: Time and space warp within its confines, it perpetually rearranges itself in ways physics shouldn't allow, it fills itself with deadly traps and monsters, and it can never truly be destroyed.
- Genius Loci: Daedalus gave it artificial intelligence, so the entirety of its interior is deliberately crafted.
- The Maze: The Labyrinth is perhaps the oldest example of this trope.
- Sadist: It was designed to be deadly to those inside and Apollo theorizes that it may have been programmed to take joy in it. He also speculates that this trait has been watered-down by the time he travels through the Labyrinth himself, giving off a more apathetic than hostile vibe.
- Year Outside, Hour Inside: A few minutes in the Labyrinth is a few hours in the outside world.
Leontocephaline
The mysterious, immortal protector of Mithra, the Zoroastrian personification of contracts and oaths and the primary god of Mithraism, a Roman cult based on Zoroastrianism. Originally tasked to oversee the stars, he ended up becoming the guardian of Nero's fasces.
- Complete Immortality: According to Apollo, the Leontocephaline will exist for eternity.
- Crossover Cosmology: Then again, Mithraism was a real thing in the Roman Empire.
- The Dreaded: Nobody dares to face him in battle. Even resident badass Luguselwa can't bring herself to see his face for more than a couple seconds and ends up having to make a deal with him to get Nero's fasces.
- Good Wings, Evil Wings: He has a pair of majestic wings that Apollo compares to the Anemoi and Christian angels.
- Graceful Loser: Despite Luguselwa having tricked him, the Leontocephaline nevertheless rewards her with Nero's fasces. Apparently, he finds the whole thing funny.
- Panthera Awesome: He is lion-headed and has fur all along his body.
- Snakes Are Sinister: Subverted. He has a headless and tailless snake circling his body, but he is a neutral force and not aligned to Nero.
- The Unfought: Justified since he is unkillable. Lu gets the fasces not by fighting him, but by giving up her immortality.
- Winged Humanoid: Has a pair of angelic wings.
Lupa
Trainer of Roman heroes.
- A Dog Named "Dog": Her name is the Latin word for "she-wolf".
- Good Is Not Nice: She's very gruff and stern, and passes this on to her proteges.
- Noble Wolf: Heroic but not nice.
- Sink or Swim Mentor: Lupa believes that experience is the best teacher — which is why she basically dumps her kids within fighting range of monsters to see how they do.
- Team Dad: Female example. In contrast to Chiron, who's more hands-on, Lupa is more militaristic and indifferent to the demigods she trains — although she does care deeply about the wellbeing of Rome.
