Characters who appear in Percy Jackson and the Olympians
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Sons and daughters
of the Greek gods. They have heightened senses and combat skills that take the form of ADHD
and their minds are hard-wired to read Ancient Greek, which gives them trouble reading English
. Their skills
are inherited from their divine parents (children of Aphrodite will be Love Freaks
, children of Athena will be highly intelligent
, and children of Apollo will be musically and/or medicinally inclined, as well as a good shot with a bow).
- Attention Deficit... Ooh, Shiny!: Thanks to their combat skills.
- Age Lift: Applies to the major characters in the film series; instead of being 12-13 in the first book, they are in their late teens in the first film.
- Bastard Bastards: Played with in the evil demigods, most of them are fiercely loyal to their mortal parent but not to the rest of the Olympians, believing they mistreated their mortal parent.
- The Beautiful Elite: Aphrodite's children especially, although it's implied that this applies to most, if not all, the demigods due to their divine heritage and the gods' propensity for attractive partners.
- Child Soldiers: Most of them are between the ages of 12 and 20. Though its somewhat subverted in that they are trained for their survival as oppose to being trained as soldiers. Played Straight with The children of Ares are literally born as this.
- Gang of Hats: As stated below, each demigod shares some parental-domain-related power with their half-siblings - Aphrodite's children are all ridiculously gorgeous, Hephaestus's children are good with machinery, etcetera.
- Green Thumb: Demeter's children. Dionysus' twins, too - they work best with grapes, but since their dad isn't allowed to touch anything vaguely related to wine, they settle for strawberries instead (just them walking among the strawberry fields makes them of better quality already.)
- Heroic Bastards: The heroic demigods, anyway, since no one's godly and mortal parents are married.
- Human Mom Non Human Dad: Played straight or inverted with the demigods' parentage.
- Improbable Aiming Skills: Apollo's sons and daughters are good at archery.
- L Is for Dyslexia: Brains are hard-wired for Ancient Greek.
- The Medics: Apollo's kids, thanks to their father.
- Neurodiversity Is Supernatural: Their ADHD is due to their bodies acting on combat instinct while their dyslexia is due to being hardwired for Ancient Greek.
- Superpowerful Genetics/Lamarck Was Right: Powers relating to the domains of their divine parentage. For example, Demeter's children will have Green Thumbs, and Athena's children will be crazy-smart.
- Supreme Chef: Demeter's children; it's part of their mother's domain.
- Teen Genius: Children of Athena and Hephaestus. Athena kids are wise and spend their time reading and researching, while Hephaestus kids are good with machinery.
- Wrench Wench: Daughters of Hephaestus are just as good with mechanics as his sons.
- You Can't Fight Fate: A running theme of the series, justifiable given its origins. However, prophecies being what they are, it's terribly easy to misinterpret one's fate.
Perseus "Percy" Jackson
"Is he dangerous?"
"Very, to his enemies."
The son of Poseidon, god of the sea, and clear-sighted mortal Sally Jackson. The titular hero of the series, the books start in Percy's sixth grade year when he kills one of the Furies, masquerading as his pre-algebra teacher. Has a Cool Sword
, Anaklusmos ("Riptide") and later becomes the third person in history to bear the Curse of Achilles
Played by Logan Lerman
in the film series.
"Athena always has a plan."
The heroine of the series and the resident brainiac
, Annabeth is the literal
brainchild of Athena and military historian Frederick Chase (kids of Athena are just special that way). Her pastimes include architecture, Ancient Greek, killing monsters, and learning how to stab things. Annabeth ran away from home when she was seven and met up with Thalia and Luke; eventually they made their way to Camp Half-Blood, but lost Thalia in the process.
Played by Alexandra Daddario in the film series.
- Action Girl: Can kick a lot of ass, and is a more experienced warrior than Percy.
- Adaptation Dye-Job: Described as having blond hair and Gray Eyes in the book, but the movie gives her brown hair and blue eyes.
- For the sequel, they're reverting to her book hair color.
- Ascended Fangirl: Wants to be an architect and build monuments that will last for eons. In the final book, she gets her wish when she's chosen to redesign Olympus.
- Badass Bookworm: Loves learning as Athena's daughter, but is still capable of being a competent Action Girl.
- Badass in Distress: In The Titan's Curse. Not for very long.
- Badass Normal: Comparatively. She has zero supernatural powers but holds her own in fights as well as Percy.
- Battle Couple: With Percy.
- Betty and Veronica: The Betty to Rachel's Veronica.
- Broken Bird: Due to the trauma about losing Thalia, and then Luke.
- Composite Character: The first film's version of Annabeth is a combination of book Annabeth and Clarisse.
- Defrosting Ice Queen: Starts out as very aloof at the beginning of the first book, but she slowly warms up to Percy and reconnects with her family.
- Drop the Hammer: She used one as her first defense against monsters before she met Luke and Thalia.
- Dumb Blonde: Inverted. Don't let her hear you insult her intelligence, either. She will gut you.
- Fatal Flaw: Pride. Annabeth's problem is thinking that she can do anything, even when she can't, and, by extension, holding onto impossible goals. She thinks that she can solve every problem that she has, including that of her distant mother and traitorous friend. Because she thinks that she can fix these problems, she never really lets them go and moves on. This is why she takes the sky from Luke in Titan's Curse, despite it having 'bad idea' written all over it, among other things.
- First Girl Wins: If you exclude Nancy Bobofit, who doesn't show up after the first few chapters, Annabeth is the first named girl Percy meets.
- Girls Love Stuffed Animals: One of the contents of her trunk, along with various survival gear, her Yankees cap and Daedalus' laptop, is a teddy bear. (Don't tell anyone!)
- Gray Eyes: Inherited from her mother, Athena.
- Green-Eyed Monster: She's pretty obviously jealous of Percy's friendship with Rachel.
- Hot Scientist: Architecture is her dream. In the fifth book (the same one where Percy describes her as beautiful), she gets tasked with rebuilding and redesigning Olympus.
- Human Mom Non Human Dad: Inverted; her mother is a goddess and her father is a mortal.
- Insufferable Genius: In the early books, she was an extreme know-it-all. She matures by the fifth.
- In the Back: Saves Percy from Kelli by stabbing her in the back with her knife.
- Invisibility Cloak: A gift from her mother, a Yankees baseball cap can turn her invisible.
- Kissing Cousins: Subverted. Percy and Annabeth are technically second-cousins, the gods have no DNA to speak of and as such, Percy and Annabeth are not biologically related.
- Knife Nut: Her weapon of choice is a knife; for clever fighters only.
- The Lancer: To Percy.
- Like Brother and Sister: Annabeth had always had a soft spot for Luke since she was a child, but in the end, they come to terms that they only see each other as brother and sister.
- Love Redeems: Convinced to the end that she can reawaken the good in Luke, and motivated by her history with him. It works, but not with the kind of love she expects.
- Morality Pet: For Luke, she's the only one who the character seems to retain any humanity towards.
- Memento MacGuffin: Her knife, which she received from Luke when they first met.
- Nice Hat: Her Yankees baseball cap, which can make the wearer invisible.
- Plucky Girl
- The Pollyanna: To some extent. She's well-aware that the world is not perfect, but it's her dream try to fix that, which is why she wants to be an architect. This is also shown with how she's convinced she can make Luke good again.
- Precocious Crush: On Luke, when she was younger.
- Restored My Faith in Humanity: For Luke.
- The Runaway: Ran away at the age of seven, falling in with Thalia and Luke whom she grew to consider her family.
- The Smart Girl: Hello, her mom's the goddess of wisdom.
- Teen Genius: Being a child of Athena, she is inherently smart. Her dream is to become an architect. At the end of the fifth book, she gets her wish - she gets to redesign Olympus.
- Tsundere: Type A, all the way. Even at the end while making out with Percy.
- We Used to Be Friends: With Luke.
- Will They or Won't They?: With Percy. They Do....eventually.
- Why Did It Have to Be Snakes?: Annabeth does not like spiders (explained by the story of Arachne) and the feeling is apparently mutual. Having to chase a mechanical spider through the Labyrinth was not her favorite thing ever. This aracnophobia and hatred stretches to all children of Athena.
Son of Hermes and May Castellan. When he was an infant, his mother tried to become the new host for the Oracle of Delphi. It went horribly wrong. May went crazy from visions of her son's eventual future
and became The Ophelia, and spent Luke's childhood babbling at him about his horrible fate
. He ran away and met up with Thalia and Annabeth; they eventually made it to Camp Half-Blood, but not before Thalia died
. Luke went on a failed quest and came back with a scar
Played by Jake Abel in the film series.
- The Ace: Good looking, charismatic, a good fighter, and his cabin's counselor.
- Broken Ace: Too bad this hides extreme parental issues and resentment.
- Always Someone Better: To Percy.
- Antivillain: Gradually revealed to be this as the series goes on and his more redeeming qualities and tragic backstory come to the surface.
- Broken Bird: His hatred of the gods stems from his own bitterness after being basically abandoned by his father his entire life.
- Belated Backstory: Until the fifth book, all we know is that his dad sent him on the quest where he got his scar, and he hates him for it.
- Big Bad: He's effectively this for the first two books, as Kronos is at that point Sealed Evil in a Can and none of the higher-ranking Titans show up until the third.
- Big Brother Mentor: To Percy in book one.
- Big Man on Campus: Seemed to be this before betraying the camp — he was counselor of the Hermes cabin, attractive, relatively popular, and a Big Brother Mentor to Percy.
- Blond Guys Are Evil: After he joins Kronos.
- Calling the Old Man Out: He's pretty pissed at Hermes, not gonna lie.
- The Chosen One: He is "the hero" described in the Great Prophecy, not Percy.
- Cool Sword: Backbiter. Doubly deadly due its being fashioned out of both celestial bronze and steel, meaning it can kill both mortals and gods.
- Dark Messiah: Definitely twisted and evil as well as basically Kronos's champion, but eventually saves the world.
- Driven to Villainy: His bitterness at his father and the treatment of those in the Hermes cabin drive him to betray the camp.
- Demonic Possession: Willingly, if reluctantly, allows Kronos to possess him as the last resort for Kronos's resurrection.
- Dying as Yourself: As Luke, not Kronos.
- Face-Heel Turn: Goes from friendly, if somewhat aloof, mentor character to Percy to one of the major antagonists in the series. And back again, if only for a few moments.
- Fallen Hero: After joining Kronos.
- Freudian Excuse: Once you find out his backstory in The Last Olympian. His mother's kind of crazy and his father's distant, driving him to run away.
- Like Brother and Sister: He sees Annabeth as a little sister.
- Living Bodysuit: To Kronos after the latter possesses him.
- Love Redeems: In the end, his love for Annabeth drove him to perform his Heroic Sacrifice.
- Meaningful Name: A castellan is the noble tasked with defending a castle. So who's the one who ultimately protects Olympus?
- My God, What Have I Done?: In The Last Olympian, when he realizes he's hurt Annabeth and broken his promise to her.
- Promoted To Parent: For Annabeth when they were on the run.
- Rage Against the Heavens: He wants to resurrect Kronos in order to destroy the gods.
- Redemption Equals Death: Kills himself in order to defeat Kronos, who his body has been jacked by, and save the world.
- Ship Tease: With Thalia in The Titans Curse and The Diary of Luke Castellan.
- Soul Jar: For Kronos.
- Supernatural Gold Eyes: When possessed by Kronos.
- Tragic Hero: He Used to Be a Sweet Kid, but his bitterness from being abandoned by his father Hermes drove him to betray his friends at Camp Half-Blood and plan to destroy the gods.
- Used to Be a Sweet Kid : This is evident in his diary.
- We Used to Be Friends: With Thalia, Annabeth, Percy, Grover..everyone.
- Woobie, Destroyer of Worlds: To the point when even the victims of his nefarious acts (Silena, Thalia, Annabeth) show compassion for him and want to help him. Even Percy, who out right resents him feels bad for the guy in the end.
- Worthy Opponent : To Percy
Clarisse La Rue
Daughter of Ares and head counselor of Cabin Five, Clarisse frequently bullies new campers and her first appearance involves trying to shove Percy's head in a toilet. She and Percy never get along, but they do develop respect for one another.
Played by Leven Rambin in the film series.
- Achilles in His Tent: In a particularly brilliant History Repeats example, Clarisse refuses to let the Ares campers refuse to join the Battle for Manhattan because they believed they deserved a chariot they and the Apollo campers had been fighting over (which eventually went to the Apollo cabin). Just when they're on the losing side, Silena impersonates Clarisse and leads them into battle, getting killed in the process. Hence her subsequent Roaring Rampage of Revenge. Guess who did this before? Achilles, after his beloved best friend/cousin Patroclus's death.
- Action Girl: She isn't the head counselor of the war god's cabin for nothing.
- Adaptational Attractiveness: Percy doesn't describe her as particularly attractive in the books, while the graphic novel depicts her as something of a Brawn Hilda. In the film, she's played by Leven Rambin, best known for playing the stunningly beautiful Glimmer from The Hunger Games.
- Badass: She killed a drakon to avenge Silena's death. What more needs to be said?
- Who needs armor? She picks up a spear from her fallen comrade, and charges a 200 foot long drakon wearing a t-shirt and jeans.
- Badass Boast: "I AM CLARISSE, DRAKON-SLAYER! I will kill you ALL!"
- The Big Girl: One of the most adept at physical combat.
- Blade on a Stick: She is never far from her electric spear.
- Blood Knight: Takes after her papa.
- The Bully: Initially. She begins to mellow down as the series goes on and she gets a boyfriend.
- Glory Seeker: Seeks fame and glory, much like Ares's War Is Glorious mindset.
- Hidden Depths: She turns out to be a Jerk with a Heart of Gold. She's also secretly afraid of disappointing her father, as shown in The Sea of Monsters.
- History Repeats: See Achilles in His Tent above.
- Human Mom, Non-Human Dad: Her father's Ares so her mom is presumably a mortal woman.
- Human Popsicle: For a short while during the battle of Manhattan.
- Jerk Jock: Initially, she's the brawny kind who stuffs peoples' heads down toilets.
- Jerk with a Heart of Gold: Matures into this around the fourth book.
- The Lad-ette: She just as tough, possibly even more, than the other sons of Ares.
- Large Ham: Clarisse would like you to know that she is CLARISSE, DRAKON-SLAYER!
- Odd Friendship: With Silena.
- Official Couple: With Chris.
- OOC Is Serious Business: In book 5, she is so angry at the Ares cabin being dissed that she and her cabin refuse to join the other demigods in defending Olympus. We repeat: Clarisse refused to join what could have possibly been the biggest and most monumental battle of her life.
- Pet the Dog: Her concern for and friendship with Chris and Silena.
- Red Oni, Blue Oni: She's the red oni any time she works with anyone else, period. Which is not often.
- The Rival: To Percy.
- Roaring Rampage of Revenge: When the Drakon fatally wounds Silena.
- Tomboy and Girly Girl: Tomboy to Silena's girly girl.
- "Well Done, Son!" Guy: Like Percy, she's a sucker for her father's good opinion.
Son of Hermes and boyfriend of Clarisse. He's introduced as working on Luke's side and having gone insane when he went on a mission into the Labyrinth, but Dionysus heals him at the end of Battle of the Labyrinth
Played by Grey Damon in the film series.
Daughter of Aphrodite, ergo stunningly beautiful and in love with love
. Extremely talented with handling pegasi.
Hooks up with Beckendorf between the fourth and fifth books.
Son of Hephaestus and constantly hanging out in the camp's metal forges. Can build bombs.
- Affectionate Nickname: His girlfriend calls him "Charlie."
- The Big Guy: Expected from a son of Hephaestus.
- Black Guy Dies First: The first half-blood to die in The Last Olympian.
- Brother-Sister Incest: Averted in the case of his and Silena's relationship, considering the fact that in the fifth book, it is explained that gods do not have DNA, and thus makes any arguments against inter-camp relationships null and void; with the one exception of two people from the same cabin.
- Fatal Family Photo: He just had to show off a picture of his girlfriend right before he raids the Princess Andromeda...
- Cool Big Bro: To Percy.
- Gadgeteer Genius: As a son of Hephaestus, he's very talented with machinery.
- Genius Bruiser: As a son of Hephaestus, Beckendorf has mad engineering skills.
- Gentle Giant: Large and well-built, but a down-to-earth Nice Guy.
- Heroic Sacrifice: Blows himself up in order to land a hit on Kronos.
- Human Mom, Non-Human Dad: His dad's Hephaestus, so his mom is presumably a mortal woman.
- Last Name Basis: Is referred to as Beckendorf by virtually everyone (except Silena).
- Nice Guy: One of the friendliest camp counselors, and looked up to by everyone.
- Official Couple: With Silena.
- Outgambit: He manages to play Kronos, the Big Bad, like a fool. Beckendorf my man, you get mad props for that.
- The Quiet One: Percy notes that Beckendorf was a guy of little words, but when he spoke everyone tended to listen and respect what he was saying.
- Sacrificial Lion: Killed to show just how dead serious Kronos and co. are.
- Together in Death: With Silena.
Connor & Travis Stoll
Sons of Hermes—not twins, but a year apart. They succeed Luke as co-counselors of Cabin Eleven and the main pranksters of Camp Half-Blood.
Daughter of Zeus and an eighties starlet with a poofy hairdo. Her birth broke the pact the Big Three had made after World War II to never have children again. She ran away from her alcoholic mother when she was younger, met up with Luke and eventually Annabeth, and made her way with them to Camp Half-Blood. There they were overwhelmed by monsters and Thalia stayed behind to hold them off, dying in the process. Zeus turned her body into a pine tree.
Played by Paloma Kwiatkowski / Katelyn Mager (young) in the film series.
- Abusive Parents: To say nothing of Zeus' abandonment, Thalia's mother was initially loving but then grew cold and distant, not to mention an alcoholic. The only reason Thalia didn't run away sooner was because of her younger brother Jason.
- Action Girl: Like most female demigods.
- Acrophobic Bird: Kind of sucks that the daughter of lightning and the sky (which gives her wind and electricity powers) is scared of heights.
- Apocalypse Maiden: Defied. Because she has the Fatal Flaw of being weak when offered power, like her father, she avoids being the demigod in the prophecy to make a choice that will save or destroy Olympus upon turning sixteen by becoming a Hunter and staying fifteen.
- Archer Archetype: After she joins the Hunters of Artemis in book three, she grows into this while wielding a bow with arrows as her weapon, becoming calm, calculating, and a little distant.
- Aloof Dark-Haired Girl: In contrast to blonde heroine Annabeth and Fiery Redhead Rachel, Thalia is sarcastic, slightly petty, and cold. She grows into this trope more when she becomes a Hunter, becoming much more mature and aloof.
- Back from the Dead: More like back from being turned into a pine tree.
- Broken Bird: She seems to be getting better.
- Cool Crown: Wears a silver circlet after becoming Artemis's lieutenant.
- Celibate Heroine: After she joins the Hunters, as they swear off men.
- Dangerous Sixteenth Birthday: It never happens, leaving Percy and Nico as the only candidates for the Great Prophecy's "hero."
- Defrosting Ice Queen: Starts out as cold and arrogant, but mellows down eventually.
- Don't You Dare Pity Me!: At first.
- Fangirl: Of punk rock and roll.
- Fatal Flaw: She's said to be weak when offered power, like her father.
- Human Mom, Non-Human Dad: Her dad's Zeus and her mom is a White-Dwarf Starlet.
- Immortality Begins at Twenty: A day short of sixteen, rather.
- The Lancer: To Percy. Also somewhat literal, considering her weapon of choice, aside from her standard bow and arrow, is a spear. That grows out from a can of Mace.
- Older Than They Look: She's twenty-one, but being a pine tree stunted her aging so she appears fifteen.
- Perky Goth: More of a goth-punk mix. She wears her hair short and choppy, dresses in dark colors, and likes Green Day a lot, but she's a really nice kid once she defrosts.
- Plucky Girl: Despite her cold personality and everything she's been through., she's pretty eager to fight and is always brave.
- Posthumous Character: In the first two books she's remembered through other characters' recollections, but she's brought back to life at the end of the second book.
- Promoted To Parent: For Annabeth.
- Put on a Bus: After she joins the Hunters, she becomes a vaguely mentioned character. However, the bus comes back in the fifth book.
- Refusal of the Call: Opts to stay a day short of sixteen forever instead.
- Ship Tease: With Luke in The Titan's Curse and The Diary of Luke Castellan.
- Shock and Awe: Part of her dad's domain.
- The Snark Knight: She's rather sarcastic, emphasizing her somewhat distant personality.
- We Used to Be Friends: With Luke.
- Why Did It Have to Be Snakes?: Her acrophobia is said to be ironic, considering she's a daughter of the Lord of the Sky.
Bianca di Angelo
Daughter of Hades and Maria di Angelo, Bianca and her brother were born in the 1930s.
- Action Girl: As a Hunter.
- Big Sister Instinct: For Nico.
- Braids of Action: After becoming a Hunter, she wears her hair in a braid.
- Cynicism Catalyst: For Nico. Her death left him shell-shocked and bitter. When we meet him next, he's nothing like the Cheerful Child he was while she was alive.
- Dead Person Conversation: Nico has a couple with her after her death.
- Dropped A Bridge On Her: Her death.
- Fatal Flaw: Holding grudges. Very subtly illustrated in her attitude towards her brother, Nico: she loves him dearly, because she's all he has in the world, but she also resents him because being all he has means she can't do anything for herself. And for bonus points, it's indirectly fatal. When she chose to join the Hunters and leave Nico at Camp Half-Blood, Zoe got the idea that she would be a good choice to groom as the next leader of the Hunters, and drags her along on the quest where she dies. What ends up killing her is guilt: she feels bad for resenting Nico, so she steals a souvenir for him from Hephaestus' junkyard, which activates the automaton defending it. She sacrifices herself to shut it off.
- Fish out of Temporal Water: Born in the 1930s, but she doesn't seem to be having too much difficulty adjusting.
- Heroic Sacrifice: In order to save the rest of the party.
- Human Mom, Non-Human Dad: Maria di Angelo and Hades.
- Nice Girl: Sweet-tempered and patient, especially when dealing with her younger brother. See, however, Fatal Flaw above.
- Nice Hat: Wears a green hat at the beginning of The Titan's Curse, which is noticeable enough that Percy's narration often calls her the girl in the hat before he gets her name.
- Reincarnation: The sequel series reveals that she chose to be reincarnated after her death.
- Shrinking Violet: Before becoming a Hunter, afterwards Percy notes she looks more confident.
- Spirit Advisor: Becomes one of sorts after her death, warning Nico not to summon their mother's spirit.
- Strong Family Resemblance: Looks a lot like her mother. It's implied this is the reason for Hades favoring her over Nico.
- We Hardly Knew Ye: Killed off in her debut book.
Nico di Angelo
Younger brother to Bianca and son of Hades and Maria di Angelo. After Bianca's death
, Nico runs away and teaches himself to use his unique powers.
Son of Nemesis, the goddess of revenge and balance, Ethan was one of the many residents of Cabin Eleven who went unclaimed or had no cabin of their own because their parents were minor gods. He promised his mother he would make a place on Olympus for the minor gods, and in exchange she took his eye.
- Eyepatch of Power: Wears one to cover his missing eye.
- Eye Scream: His mother took his eye part of the promise that he would change Olympus for the better.
- Fallen Hero: As a former camper.
- Heel-Face Revolving Door: Starts out as a hero, then turns to Kronos's side, then turns back to being a hero again at the last second in The Last Olympian, resulting in his death.
- Pride Before a Fall: His mother is the goddess that causes the "fall" part of this trope. Ethan himself follows in her footsteps.
- Redemption Equals Death: In The Last Olympian, he changes sides at the last second when he realizes that Kronos doesn't build, only destroys, and tries to kill Kronos. Kronos, in turn, kills him for turning against him.
- Stealth Pun: He is blind in one eye. His goal is to bring justice for the minor gods. You could say...justice is blind. (Or, in this case, half blind.)
- Tarot Motifs: 8th, Justice.
Other Camp Residents
A satyr and Percy's best friend, Grover is the Searcher sent to Yancy Academy to keep an eye on Percy. He leads Percy to Camp Half-Blood and joins him on each book's quest (except the second, where the object is to rescue him). His dream is to find the lost god of the wild, Pan. He eventually does. Just in time to watch Pan die.
Played by Brandon T. Jackson in the film series.
- Beta Couple: With Juniper.
- Brown Eyes: Representing his connection with nature.
- Butt Monkey: Mostly in The Lightning Thief, though he still has moments later on in the series. He simply can't seem to catch a break.
- Throw the Dog a Bone: In The Last Olympian, he's made a Lord of the Wild and gets a position on the Council.
- Cowardly Lion: He's relatively small for his size, easily frightened, constantly complains about going into dangerous situations, but will literally go to hell and back for his friends.
- The Chosen One: A variant. In Battle of the Labyrinth, Pan states that he specifically chose Grover to deliver the message of his death to the world.
- Curtains Match the Window: Brown hair and brown eyes.
- Disability Superpower: Not really but he presents as this, using crutches when among muggles to disguise his goat-legged gait.
- Distressed Dude: In Sea of Monsters.
- Extreme Omni Goat: Well, omni-satyr. Grover will eat anything.
- Friend to All Living Things: Comes with the territory.
- Green Thumb: Melodies played on his reed pipes can make plants grow.
- He's Just Hiding: In-universe, he does not believe Pan dead and his main motivation is to gain a Seeker's license so he can search for him. He's right, and he does find Pan...in time to see him actually die.
- Herald: He's the one who reveals the existence of the mythical world to Percy.
- Heterosexual Life-Partners: With Percy, they share an empathy link.
- Inept Mage: At first, he grows more into his power as the series progresses.
- Interspecies Romance: Technically with a tree. In mythology, though, Juniper is a Dryad, and nymphs are often considered to be the female version of a satyr.
- Magic Music: See Green Thumb.
- Nice Guy: And he retains this attitude despite being the resident Butt Monkey.
- Plucky Comic Relief: More so earlier on.
- Race Lift: Is black in the movie.
- Took a Level in Badass: Goes from being the unquestionable Butt Monkey in The Lightning Thief to being a competent member of the good guys' team whose skill set complements the more action-oriented demigods.
- Trademark Favorite Food: Enchiladas. And tin cans.
- The Unfavourite: The Council of Cloven Elders has a very strong dislike for Grover out of all their satyrs, particularly after book four.
Introduced as Mr. Brunner, Percy's Latin teacher, Chiron is actually an immortal centaur keeping an eye on Percy. He serves as activities director of Camp Half-Blood and the Voice Of Reason
Played by Pierce Brosnan
in the film adaptation of The Lightning Thief and
Anthony Head in The Sea of Monsters
Tyson is first introduced as a school friend of Percy's, but he is later revealed to be a Cyclops - one-eyed children of Poseidon, therefore making him Percy's half-brother.
Played by Douglas Smith in the film series.
- The Ace: He sounds dumb sometimes, and he can be a bit of a crybaby, but he can do anything.
- Adaptational Attractiveness: In the movie.
- Berserk Button: Sort of. He never really seems to get angry (except at Polyphemus), but threatening harm to Percy or Annabeth is an excellent way to get him to squish you.
- The Big Guy: Already the largest of Percy's main team, as a cyclops he has superhuman strength. Tyson's strength is considered extreme even for a cyclops though—he was able to defeat a fellow cyclops named Ma Gasket with two punches, and Ma Gasket was considered powerful for a cyclops herself. He was also able to bring down a Colchis bull with his bare hands and survive Kampe's poison. Being immune to both fire and water is just icing on the cake.
- Cloudcuckoolander: He seems he's got a few screws loose, but actually has mad engineering skills.
- Cyclops: Is one.
- The Engineer: Becomes one.
- Gentle Giant: Over six foot tall, but really childish and willing to get along.
- Genius Ditz: He is apparently really good at Monopoly.
- Nice Guy: See Gentle Giant.
- Trademark Favorite Food: Peanut butter.
- Voice Changeling: Apparently all cyclops have this power, it is considered creepy so he doesn't use it much.
Quintus's dog. Later becomes Percy's after Quintus/Daedalus dies.
Percy's trusty horse, who he rescued from slavery in Luke's ship
. Percy can talk with him because he's a son of Poseidon, who made horses.
Grover's dryad girlfriend, who is first introduced in the third book.
Percy's mother, who can see through the Mist.
Played by Catherine Keener in the film series.
Sally's boyfriend and eventually second husband, Paul is Percy's English teacher. He finds this arrangement slightly awkward.
Annabeth's estranged father, who is fascinated by historical warfare.
Rachel Elizabeth Dare
A mortal girl Percy befriends, who is later revealed to be able to see through the Mist. In The Last Olympian, she becomes the host for the Oracle of Delphi
- Action Survivor: She isn't a fighter, but is pretty adept at surviving dangerous situations with monsters regardless.
- Badass Normal: She hit the Big Bad in the eye with a hairbrush.
- Betty and Veronica: The Veronica to Annabeth's Betty.
- Bookworm: Mentioned in Battle of the Labyrinth.
- Chekhov's Gunman: Makes her debut as a random bystander who saves Percy's bacon at Hoover Dam in The Titan's Curse, and becomes a key character in the next two books.
- Cloudcuckoolander: Treated this way by normal mortals, as she can see through the Mist. Ironically, this makes her the Only Sane Man, seeing real reality.
- Did You Just Flip Off Cthulhu?: Famous for hitting Kronos in the eye with a blue plastic hairbrush.
- Fainting Seer: As of becoming the mortal host for the Oracle of Delphi in The Last Olympian. She zones out and the spirit of the Oracle takes over her body, using it to recite prophecies. Lampshaded when Rachel worries about this happening in the middle of class.
- Fan Nickname: R.E.D.
- Fiery Redhead: Spirited and passionate, with curly red hair.
- Genre Savvy: More aware of the Greek world than most demigods, due to her mist-seeing abilities.
- Genki Girl: A mild form, but she talks a lot and is very enthusiastic.
- Heroes Want Redheads: Played with. She likes Percy, but so does Annabeth, making a Love Triangle. Ultimately, it's subverted, since Percy ends up with the blonde Annabeth instead of redhead Rachel.
- Improbable Weapon User: Uses, of all things, a blue plastic hairbrush to smack Kronos in the eye with.
- I See Them Too: Can see through the Mist.
- I Want My Beloved to Be Happy: See the below trope for elaboration.
- Loving a Shadow: More or less, Rachel's attraction to Percy rooted from her inevitable destiny to become the next Oracle.
- Plucky Girl: Roadtrip to almost-certain-death? Why not?
- Rebellious Princess/Tomboy Princess: Modern version, as a business heiress. Prefers hanging in jeans with demigods, than attending the fancy academy her father has planned for her.
- Romantic False Lead: To the Percy/Annabeth pairing.
- Romantic Runner-Up: In the end, Percy gets together with Annabeth instead of her. She doesn't mind, though, becoming the host for the Oracle and all.
- Secretly Wealthy: The Dares are loaded.
- Ship Tease: With Percy.
- Significant Green-Eyed Redhead: As an Ascended Extra who eventually becomes the next Oracle.
- Spirited Young Lady: Look above.
- Spoiled Sweet: Her father gives her anything she'll ask for, but she doesn't let it get to her head.
- Unfazed Everyman: Until the The Last Olympian.
Luke's mother, who is described as kind-hearted and multitalented. Until she tried to become the Oracle of Delphi despite Hades's curse, and paid the price for it.
Percy's abusive stepfather at the beginning of the series. He isn't the nicest of guys. By the end of The Lightning Thief, he's turned into a stone statue by Medusa's head. It's heavily implied that Sally used this on him
- Abusive Parents: He's a downright crappy stepfather to Percy.
- Asshole Victim: Turning someone into stone from cold blood would have ordinary been a rather morally ambiguous act, but by the point it happens, he has proven himself such an asshole that you will at worst not care, at best cheer.
- Domestic Abuser: Implied to be one towards Sally.
- Evil Smells Bad: Percy describes him as such.
- Fat Bastard: Very fat, and very mean.
- Jerkass: Especially to Percy.
- Meaningful Name/Punny Name: His last name should have plenty of hints as to his personality.
- Taken for Granite: Gets turned to stone by Medusa's head. Sally later sells this statue for quite a lot of money.
Tropes that apply to many of the gods:
- A Form You Are Comfortable With: Justified, as anyone seeing them in their true forms would probably be crispy-fried in an instant.
- Antagonistic Offspring: To Kronos.
- Berserk Button: Don't sit in their chair. Granted, said chairs are 10-foot-tall thrones on the summit of Mount Olympus (now located several miles above the top floor of the Empire State Building), so it's not like a mortal can accidentally sit in their chairs.
- Bunny-Ears Lawyer: Many of the gods: Poseidon is one of the three most powerful gods in existence, and he walks around in a Hawaiian shirt and shorts; Dionysus likes playing Pac-Man and whines about being forbidden to drink wine and can only drink pop; and Apollo is the god of medicine, drives the sun chariot as a Maserati Spyder, and lets fifteen-year-old girls take it for a spin.
- Jerkass Gods: Most of the gods at one point or another, but especially Zeus and Ares. Even the most sympathetically portrayed have their moments.
- Mayfly-December Romance: With any demigod's mortal parent. The only major Olympians who do not have children are Hera, Hestia, and Artemis.
- Parental Abandonment: They're both victims of this and guilty of it.
- Really 700 Years Old: Bordering on Time Abyss.
- Voluntary Shapeshifting: All of them can change their appearance at will, and hence have "preferred" forms.
The goddess of love and beauty. As one might expect, her role in an adventure story is pretty minimal.
Played by Serinda Swan in the film series.
The god of war. As one might expect, he's petty and not that bright.
- Abusive Parent: It's implied that he was this to Clarisse.
- Badass Biker: His preferred form is one of these, riding a black Harley-Davidson.
- Battle Aura: Emanates an aura that makes people violently angry.
- Blood Knight: Loves combat quite a lot, as the god of war.
- Boots Of Toughness: Part of his biker guise.
- Cool Shades: Wears them as part of his Badass Biker persona.
- Dumb Muscle: Sort of. While quite a competent tactician, Ares's pettiness and temper causes him to forgo strategy and use brute force in battle. His arrogance also causes him to underestimate his opponents. This is in contrast to Athena, goddess of tactical warfare.
- The Friend Nobody Likes: Even his own family doesn't know why they put up with him, and he verges Nominal Hero status by being a god and not a Titan. The exception to this is his lover Aphrodite.
- Jerkass: Ares is not that nice. He bullies his demigod children and picks fights with Percy every chance he gets.
- Karma Houdini: Other than losing a fight against Percy, he was never punished for his actions in The Lightning Thief.
- My Horse Is a Motorbike: The bike is actually his chariot in modern form.
- One-Man Army: Can bless demigods and possibly mortals, temporarily turning them into one of these.
- So Proud of You: To Clarisse, after she single-handedly kills the drakon.
- Unwitting Pawn: Of Kronos and Luke in The Lightning Thief.
The goddess of the moon, the hunt, and maidens. She is sworn as a perpetual maiden, and thus has no true children, but she does "adopt" maidens who foreswear men forever. Her main weapon in combat is a bow and quiver of arrows to use with it.
Played by Ona Grauer in the film series.
- Action Girl: Very good in combat, as expected of the goddess of the hunt.
- Adaptation Dye-Job: It's stated she has auburn hair in the books, but is a brunette in the graphic novel.
- Age Lift: In the movie, she appears as a full-grown woman instead of the young-girl form she assumes in the book.
- Animorphism: Possibly. When Artemis is fighting against Atlas she is seen taking different animal forms at great speed by Percy. He then admits that another possibility could be that the pain of holding the sky is making him hallucinate and “see things.”
- Badass in Distress: During The Titan's Curse. Once she's freed, she gets to battle Atlas.
- Berserk Button: Do not harm a maiden in front of her. To a lesser degree, Apollo flirting with her Hunters.
- Cute Bruiser: At least in her preferred form.
- Does Not Like Men: But doesn't exactly dislike them either, as shown when she praises Percy and supports keeping him alive. Her sphere just includes the protection of women and children; therefore, until a man proves himself, he's beneath her notice.
- Lady of War
- Not Bad: At the end of the The Titan's Curse she tells Percy that he didn't do bad, for a man. At first Percy thought it was an insult but then he realized that it was the first time she actually called him a man instead of a boy.
- Parental Substitute: To her younger Hunters.
- Pintsized Powerhouse
- Polar Opposite Twins/Sibling Yin-Yang: Her and Apollo.
- Sibling Seniority Squabble: With Apollo. She's older. According to mythology, she helped deliver him as a baby. He cheerfully ignores this fact in favor of calling her "little sis" at every opportunity.
- Straw Feminist: Subverted; Percy does note how ridiculously radical she and her hunters are, but Artemis is also a goddess and hero who can be profoundly wise and kind, and is not nearly as misandrist as Percy makes out at first. And, given the sheer number of times Artemis or her followers are outright assaulted in the myths by gods and nature spirits who view their unavailability as a challenge, she's kind of entitled to a bit of wariness.
- Team Mom: To the Hunters; shares the role with Zoe, though she's more at ease and welcoming than her lieutenant.
- Token Mini-Moe: Her preferred form, as it's the same age as many of her Hunters.
The god of the sun, poetry, prophecy, and medicine, and Artemis's older twin brother (but don't bring that up). He speaks through the Oracle of Delphi.
Played by Dimitri Lekkos in the film series.
- Big Brother Instinct: He has a bit of this for Artemis, considering how he defied Zeus's orders to give advice to Percy and his friends on how to save her.
- Combat Medic: Healing is part of his domain, but he's also a competent fighter.
- Cool Car: He likes the sun chariot in the form of a sports car. And he lets fifteen-year-old girls take it for a spin.
- Hot God: This applies to most of the gods, but special emphasis is given to Apollo (and Aphrodite, but that's a given).
Thalia: Wow. Apollo is hot.
Percy: He's the sun god.
Thalia: That's not what I meant.
- Polar Opposite Twins/Sibling Yin-Yang: With Artemis.
- Real Men Wear Pink: Parodied. His being the god of poetry is Played for Laughs, with him spouting haikus at the best of times.
Apollo: Green grass breaks through snow,
Artemis pleads for my help,
I am so cool.
- When Artemis points out that the last line is only four syllables, he changes it to: "I am so awesome."
- The Power of the Sun: God of the sun, natch.
- Sibling Seniority Squabble: With Artemis.
The goddess of wisdom. A perpetual maiden, her "children" are born from a quite literal meeting of minds between herself and a mortal.
Played by Melina Kankaredes in the film.
- Action Mom: For Annabeth.
- Foil: To Ares. They're both war gods, but Athena prefers tactics and strategy while Ares prefers brute force.
- Gray Eyes: Quite famously.
- Genius Bruiser: She is the goddess of both wisdom and battle strategy, and in classical mythology is one of more powerful gods, next to Zeus and Poseidon. Percy himself points out that Athena would be a worse enemy to have than even Dionysus or Ares, because if she planned to have you killed, then you would die. No matter what.
- If You Ever Do Anything to Hurt Her...: Invoked by Athena towards Percy in regards to his friendship with Annabeth. As stated above, Athena would be the worst enemy to have amongst the gods. If she wanted you dead, then you would be dead, no matter how hard you would try to evade her.
- Lady of War: One of the oldest ones in the book, she's calm and solemn but also very capable of kicking your ass.
- Overprotective Mom: Well, as "overprotective" as any of the absentee parent gods can get, anyway, but she's shown not to particularly like the idea of Percy being with her daughter.
- The Smart Guy: Among the Olympians.
- The Strategist: Tactical warfare is part of her domain, so she fulfills this role among the Olympians.
Goddess of the harvest and Persephone's mother.
- Demoted to Extra: From the original mythology, at least; she only gets an appearance in the winter solstice in the first book, a scene with her daughter and Hades in The Last Olympian, and a few appearances in battle.
- Green Thumb: Plants are part of her domain. In the last book she turns an entire army into a wheat field.
- My Beloved Smother: To Persephone.
- Obnoxious In-Laws: Manages to be this to her brother Hades regarding him and Persephone, criticizing Hades' work and wishing Persephone could have married someone with a more respectable domain.
- Jewish Mother: Though obviously not literally, the sheer speed in which she cranks out complaints about her daughter and brother-in-law's lives has shades of this.
The god of wine, parties, and insanity. He's being "punished
" by being assigned as the head of Camp Half-Blood for 100 years after chasing after an off-limits nymph, and is grouchy due to being put off the bottle and thus can't drink until his punishment is over. Has an extremely strong dislike of heroes. Known as "Mr. D" to the campers.
Played by Luke Camilleri in the film adaptation of The Lightning Thief
, and Stanley Tucci
in The Sea of Monsters
- Accidental Misnaming: Mr. D staunchly refuses to get any of the campers' names right. Just ask Peter Johnson.
- The Alcoholic: Although he's forbidden to touch anything wine-related for the next century, much to his annoyance.
- Big Damn Heroes: In The Titan's Curse, saving Percy, Thalia, Zoë, and Grover from Dr. Thorn and his soldiers.
- Demoted to Extra: In the film series, his punishment doesn't seem to be in effect, and as such Chiron seems to be camp director instead of him. He only has a cameo appearance at the Olympian council.
- Freudian Excuse: A non-villainous example. The reason he dislikes demigod heroes is because his wife Ariadne were abandoned by the demigod Theseus.
- Jerk with a Heart of Gold: Often comes across as mean and uncaring, but he genuinely cares about the protagonists and comes to their aid in one crucial moment.
- Mind Rape: His signature move, being the god of insanity. He does say that the insanity he put on Thorn's soldiers was temporary, but it is scary.
- Not So Different: He rather explicitly expresses his disdain of mortal tendencies to speak ill of his fellow gods for their behavior when mortals have plenty of their own bad apples.
- Papa Wolf: Minor example, but he contacts Percy in a dream to make sure his one remaining son is safe.
- Pet the Dog: Restoring Chris Rodriguez' sanity in The Battle of the Labyrinth.
- The Other Darrin: Played by Luke Camilleri in the first film and Stanley Tucci in the second. Justified in-universe due to all the gods being able to change their appearance.
The god of the underworld. Bitter and asocial, but not truly evil.
Played by Steve Coogan in the film series.
- Animal Motifs: He is described as been similar to a panther: lithe, graceful and dangerous.
- Authority Equals Asskicking: In “The Lighting Thief” upon Percy’s meeting with Hades he states that Hades, above Ares and Dionysus, radiated power and that he had an air of order and lordship. The Asskicking part is seen in his Big Damn Heroes moment in “The Last Olympian”
- Big Bad: Subverted; He is set up as this for most of the first book, but it's eventually revealed he actually had nothing to do with the theft of the lightning bolt; In fact, he is hilariously pissed about people believing he would want a new war.
- Big Damn Heroes: The end of The Last Olympian
- Calling the Old Man Out: "And if there's one thing we can agree on, it's that you were a TERRIBLE father."
- Cool Helmet: His personal artifact, similar to Poseidon's trident and Zeus' Lightning. It allows him to become obscurity itself.
- Creepy Good: Scares the hell out of his family, but he's on their side when shit hits the fan.
- Dark Is Not Evil: Though everybody is convinced he is.
- Eerie Pale-Skinned Brunette: Pale and dark-haired, befitting the god of the Underworld.
- Everybody Hates Hades: Even though he didn't do anything to deserve it. Although this gets better in the end.
- Happily Married: To Persephone, more or less.
- I Gave My Word: The only one of the Big Three to take the vow of no children seriously. Or at least more serious than the other two. Zeus being Zeus will screw anything at the drop of a hat, and Poseidon hinted at having many more children than just Percy. Hades' last set of children were born in the 1920s and his lover got nuked because of it. He had no children since.
- Not So Stoic: Around his family.
- Orcus on His Throne: How Percy, Annabeth and Grover find him in “The Lighting Thief.”
- Papa Wolf: Hades, it seems, is willing to go to much further lengths to protect his children than his brothers, including visiting them in person. Plus, it's stated that Nico lives in the Underworld with him.
- Parental Favoritism: Hades makes it quite clear that he'd rather have Bianca alive instead of Nico, though it's probably because of Bianca's resemblance to their mother.
- Simple Staff: Acording to Nico, its his Weapon of Choice.
The god of fire, blacksmiths, metallurgy, and technology.
Played by Conrad Coates in the film series.
- Gadgeteer Genius: Dreams up fantastic bits of tech for the gods. According to Aphrodite, he also uses his skill with technology to keep humiliating her and Ares.
- The Engineer: Frequently seen working away at his forge, coming up with new weapons and the like.
- Not Good with People
Hephaestus: People are more difficult to work with than machines. And when you break a person, he can’t be fixed.
Hephaestus: Was that sarcasm? Machines don't use sarcasm.
The goddess of women and marriage. She is quite possibly one of the three gods who have never had a demigod child (the other two being Artemis and Hestia).
Played by Erica Cerra in the film series.
- Bitch in Sheep's Clothing: Acts pleasant, but has a particularly nasty side when she doesn't get her way.
- Clingy Jealous Girl: To Zeus.
- Dysfunctional Family: Tries to hide the fact that she's the matriarch of one, but it doesn't really work.
- Knight Templar: For the "perfect family" ideal. Unfortunately for the goddess of marriage, she's stuck with an infamously philandering husband.
- Parental Favoritism: She flung Hephaestus off of Olympus for having the audacity to be born less than beautiful, and makes it painfully obvious that she dislikes those demigods born to already-married gods and goddesses.
- Stepford Smiler: She's pleasant and charming, but this crumbles pretty fast. Although being the matriarch of a Big Screwed-Up Family will do that to you.
- Wicked Stepmother: Displays this the most out of the Big Three's wives, as she's the goddess of marriage and her husband's demigod children are an attack upon her domain. This is the reason she and Thalia don't get on.
- Yandere: For Zeus. She particularly dislikes Thalia because she's the result of Zeus's infidelity.
The god of messengers, travelers, and thieves. As such, he's always extremely busy.
Played by Dylan Neal in the film adaptation of The Lightning Thief and Nathan Fillion
in The Sea of Monsters
The goddess of the hearth. She's often overlooked by the other characters, often quite literally.
- Ascended Extra: Plays a far more important role in The Last Olympian than she does in the original mythology.
- Demoted to Extra: In the original mythology, and of course as part of her past in the books. She seems to have happily embraced the option.
- Chekhov's Gunman: The little girl tending the hearth as Percy tours the camp for the first time in The Lightning Thief appears four books later as Hestia, goddess of the hearth and the titular last Olympian.
- The Heart: Fulfills this role for the Olympians.
- Keep the Home Fires Burning: Effectively her purpose in life, as she stands watch over Olympus while the other gods are off fighting. She even says the trope name in a discussion with Percy and Nico.
- Nice Girl: She's probably the kindest and most down-to-earth Olympian.
- Non-Action Girl: Because her main role is to Keep the Home Fires Burning, she doesn't see much, if any, combat.
- Older Than They Look: Hestia in particular takes this trope out of all the gods, because she takes the form of a seven or eight-year old girl.
The lost god of the wild, believed to have been dead for two thousand years.
- Death Seeker: Wanted to fade because of the decline in the wild places of the earth, and let the world believe he was dead so he would fade faster, but since the satyrs believed in him, he couldn't fade yet.
- Green Thumb: Nature is part of his domain.
- He's Just Hiding: In-universe, Grover does not believe Pan dead and his main motivation throughout the series is to gain a Seeker's license so he can find Pan.
- Magic Music: Music played on his reed pipes can make plants grow.
Goddess of springtime, Demeter's daughter, and Queen of the Underworld. Married to Hades.
Played by Rosario Dawson
in The Lightning Thief
The god of the oceans, storms, earthquakes and horses. Poseidon is shown to take greater care of his children than other gods and is more mature than his brother Zeus.
Played by Kevin Mc Kidd
in the film series.
- Doting Parent: As doting as an absentee god parent can be, anyway. But he's especially this for Percy in comparison to some of the other gods, especially Zeus and Hades.
- Father Neptune: The Greek equivalent of the Trope Namer. Especially apparent while fighting against Oceanus in The Last Olympian.
- Immortal Immaturity: Averted. In ancient times he was very similar to Zeus in temperament. He would often hold grudges and be highly vindictive when things did not go his way. In the series he comes across as having matured to a degree where he is much more reasonable, at least compare to his brother.
- Making a Splash: God of seas and oceans, natch.
- Prongs of Poseidon: The Trope Namer.
Lord of Olympus and god of storms, justice, and oaths. The last two being ironic considering his actions throughout the series.
Played by Sean Bean
in the film series.
- Badass in a Nice Suit: The king of Olympus, fought against the Titans in his youth, and personally lead the Olympians into battle against Typhon, and is shown wearing dark, pinstriped suits.
- Bolt of Divine Retribution: Quite literally. His symbol of power is the "master bolt." The first lightning bolt and most powerful weapon in the series.
- Head Inthe Sand Management: At first, the refuses to allow discussion on the rising threat of the Titans over the protests of the other gods until Artemis forces him to confront irrefutable evidence. In The Heroes Of Oympus, he does the same with the threat of the rising giants refusing to take action once again over the protests of the other gods.
- Hypocrite: Zeus tears into Poseidon for breaking his oath and calls Percy's birth a crime. Yet he broke the oath first after being the one to force it on his brothers. No one bothers to mention it since he just got his lighting bolt back.
- Immortal Immaturity: In ancient times, Zeus and Poseidon had almost interchangeable personalities. By modern day, Poseidon has matured to a degree, so he tends to be more reasonable. Zeus has not and still comes across as a pompous git who thinks he is perfect.
- I Reject Your Reality: Zeus tries to deny the return of the Titans until he is presented with irrefutable evidence but by then it is too late to do anything. He denies the return of the Giants as well and that the Olympians need demigod help to stop them. Hera states in The Heroes of Olympus that Zeus has a long history of this thanks to his pride.
- Jerkass: All the gods are this to a degree, but Zeus stands out compared to the others.
- Informed Attribute: Zeus supposedly has a charming, fun side that attracts ladies, a more fatherly side that cares for his children, a better king than he once was, and some sort of wisdom that helps him rule the god. All we seen and truly hear about is an arrogant, short-tempered, judgmental jerk that is willing to send his children and lovers up the creek for his own benefit, a terrible king, and no wisdom at all. In the second book series, things fall apart the moment Hera isn't around to keep the peace.
- Karma Houdini: Despite breaking a sacred oath and pulling a ton of other crap Zeus is never held accountable for his actions. Instead his children often have to pay for his crimes and mistakes. Being the most powerful god around has its perks.
- King of the Gods: Trope Codifier.
- Parental Neglect: Among his many JerkAss qualities Zeus neglected to have a proper cabin built for his children which ironically makes him one step more of a neglectful parent than other gods who at least built actual cabins for their kids. Instead of a place where a person can live and sleep, Zeus' cabin is a temple dedicated to him. Children of Zeus have to move eagle statues out of the way to sleep in alcoves with a statue of Zeus staring down at them.
- Pride: His defining characteristic and source of many of the problems throughout both series.
- Shock and Awe: Being god of the sky gives him lightning powers. His Weapon of Choice is even a Bolt of Divine Retribution.
- Ungrateful Bastard: At the end of the first book, Zeus can not cough up a thank you to Percy and threatens to kill him if he travels in the sky again. At the end of the first series, he can barely eke out a thank you to Hades and Poseidon, agree to Percy's requests, and fails to fulfill all of them. At the end of the second series, Zeus says he is proud of Jason, yet the moment Jason questions Zeus (when Zeus is wrong) Zeus is one step away from killing his own son.
The King of the Titans and suitably the most powerful. He has domain over time and harvest.
- Abusive Parents: Yes indeed.
- And I Must Scream: He literally cannot die. The first time, he was chopped into bits and pitched into Tartarus. The second time, his consciousness exploded and was spread so thinly across the world that there's little hope of it reassembling.
- Archnemesis Dad: To many of the Olympians.
- Asskicking Equals Authority: Became King of the Titans through being the most powerful, being the one who killed his father in the original mythology.
- Batman Gambit: Allowing the Fleece to be returned to Camp Half-Blood so Thalia could be brought back to life, and he could count on her Fatal Flaw to sway her to his side so he could have a chance to control the Great Prophecy. It fails.
- Big Bad: Of the entire series. His goal is to be resurrected, and the demigods and gods have to stop him because it would mean the fall of civilization.
- Big "NO!": Lets one lose when he's finally defeated.
- The Chessmaster: Manipulates people and events to further his goal of reforming and taking over the world.
- Eldritch Abomination: Described as such.
- Sadistic Choice: In the fifth book, Kronos frequently threatens to kill Percy's friends unless he surrenders to him.
- Sealed Evil in a Can: Initially, his remains are just in a particularly creepy sarcophagus that gets stronger every time a demigod forsakes the Olympians and joins his side. Later, Luke graduates to being his Soul Jar.
- Sinister Scythe: His Weapon of Choice.
- Time Master: Kronos seems particularly fond of slowing time around his opponents to a near stop.
- We Can Rule Together: Offers this a bunch of times. Most of them are insincere.
- You Have Failed Me: Kronos decides to let Atlas rot due to his repeated failures.
The Titan of Light.
The Titan of Strength, nephew of Kronos, and father of the Hesperides and Calypso. For his role in the first Titanomachy, he was charged with holding up the sky.
The Titan of Stars and Constellations.
Titan of craftiness and forethought. Sided with the Olympians in the first war, but out of a desire for revenge on Zeus and thinking the Olympians cannot win switches sides to the Titans.
- Affably Evil: If one can call him evil.
- If My Calculations Are Correct: Implied that part of his foreknowledge is his ability to calculate probability to predict the most likely outcome.
- Revenge Before Reason: One possible interpretation of his defection.
- Satan Is Good: In a sense. He is referred to once as "the good Titan" for the aid he has given to mankind with fire and curiosity in defiance of Zeus.
- The Smart Guy: Among the Titans who appear, he's the most intelligent and predicts the Olympians' loss this time.
Titan of mortal life, brother of Kronos, and father of Prometheus. He appears only in The Demigod Files and in House of Hades
There are considerably more Titans than are mentioned in the main series, but a lot of them get expounded upon, by none other than Percy himself, in Percy Jackson's Greek Gods
. Since their day was before the rise of the Olympian gods, many of them have since faded into the background, with a few exceptions.
- Attention Deficit... Ooh, Shiny!: Theia, the Titaness of gems and jewels. Percy thinks this is why she married Hyperion
- Being Good Sucks: In addition to Prometheus up there, special mention goes to Rhea. Percy uses language similar to describing his own mother, in that she had the nicest sweetest personality of out of the Titans, which meant she got the worst luck, such as having Kronos fall for her and having him swallow her children.
- Birds of a Feather: Tethys (rivers and streams) who marries Oceanus (the ocean). "Hey you like water? I like water too! We should totally go out!"
- The Casanova: Helios, apparently. He has a tendency to frequent local watering holes to try and impress women.
- Fortune Teller: Percy describes Phoebe rather like one.
- Hot God: Several of them, but Rhea stands out again.
- Photographic Memory: Mnemosyne, who remembers everything.
- The Pollyanna: Pheobe. Name means "Bright" which was how she tried to see the world.
- Women Are Wiser: Percy notes that none of the Titan girls got involved in the conspiracy to kill Ouranos. He seems to have much higher regard for the female Titans in general than the men.
A huntress of the goddess Artemis and her former
lieutenant. One of Atlas's daughters, who was disowned by her family after helping Hercules steal from their apple tree. She is replaced by Thalia Grace after her death and turned into a constellation called "The Huntress" by Artemis
- Action Girl: Artemis's second-in-command, and thus good in battle.
- Aloof Dark-Haired Girl
- Ambiguously Brown: Is described as having "olive" or "caramel-colored" skin, black hair, and dark eyes; but her ethnicity isn't elaborated on beyond that. It's been suggested that in the original mythology, the Garden of the Hesperides (and thus Zoe's home) was located in what is now Libya.
- Antagonistic Offspring: To Atlas.
- Archer Archetype: Fits this trope better than Thalia initially, being aloof and somewhat cold, as well as an excellent shot with a bow and arrow.
- The Atoner: There are hints of this in her desperation to rescue Artemis, even at the cost of her own life. She's seen clearly wanting to go with Artemis on her quest and later utterly frantic when she has a vision of Artemis' kidnapping; some of her determination to rescue her goddess can be interpreted as feeling guilty that she failed to protect her.
- The Comically Serious: Often put in hilarious situations that highly contrast with her serious persona.
- Cool Big Sis: To the younger Hunters of Artemis. Given how protective she is of them, this likely overlaps with Mama Bear tendencies.
- Defrosting Ice Queen: A non-romantic version towards Percy and Thalia over the course of The Titan's Curse.
- Died in Your Arms Tonight: To Artemis, who tried and failed to save her.
- Does Not Like Men: But is perfectly capable of liking and befriending them, once they earn more than the barest token respect.
- I Have No Daughter: Her family pulled this on her for helping Hercules steal from their apple tree.
- Jerk with a Heart of Gold: In her debut, she comes off as snobby, aloof, and hostile, particularly to Percy. However, over the quest, she starts showing a more caring side, and becomes more sympathetic once her backstory is revealed.
- The Lancer: To Artemis and, at one point, Percy.
- Noodle Incident: After two-thousand-plus years, she and Artemis have a lot of them. And they reminisce at the drop of a hat.
"The last boy to see this camp... when was it, Zoe?"
"That boy in Colorado. You turned him into a jackalope."
"Ah, yes. I enjoy making jackalopes."
- Apparently the last time the Hunters were at Camp Half-Blood, it burned down. Zoe blames the half-bloods.
- Apollo's poetry phases have apparently been going on for thousands of years. Poor, poor Zoe.
"'Tis not as bad as the time he visited Limerick. If I'd had to hear one more poem that started with 'There once was a goddess from Sparta'..."
- Not So Stoic: Very cold and professional, but it's strongly implied she only acts that way because she's not comfortable around half-bloods; we see signs of Zoe having a very active sense of humor and warmth as she relaxes around the quest group, and it's likely that when she's around just the Hunters, that side of her is much more prominent.
- Number Two: For Artemis, as her lieutenant.
- Secretly Dying: Knew from the start that going on the quest was a death sentence for her, but went anyway out of loyalty to her beloved Artemis.
- Stars Are Souls: She's turned into a constellation, "The Huntress", after she dies.
- The Stoic: While it's primarily a facade and Zoe appears to be a genuinely loving person when around people she trusts, this is still definitely a huge part of her personality.
Percy: ...She's kidding, right?
Artemis: Zoe rarely kids about anything.
- Straw Feminist: At first appears to be this, but is justified/deconstructed when Riordan reveals a Freudian Excuse for her hating males, and eventually portrays her beliefs in a less radical and ludicrous style. It's not that she hates men, she just doesn't trust heroes because too many of them have betrayed her or turned on the Hunters in the past.
- Possibly even justified, as it's revealed later in the series that heroes share a fatal flaw of being prone to self-centeredness and letting the people who help them fall by the wayside. She's seen that pattern repeat for thousands of years; no wonder she's a little jaded.
- Undying Loyalty: To Artemis, so much that she went on a quest she knew would kill her just to save her. The first words out of her mouth when the Oracle faces her are "What must I do to save my goddess?"
- She's so obviously a moment away from willingly shouldering an eternal burden that would kill any non-immortal who attempted it, solely because she can't bear to see her goddess in pain, that she has to be given a direct order not to do so. What's more, it's implied that, at that point, Artemis couldn't actually see her face. They just know each other that well.
Atlas: Perhaps you would like to take it for her, then? Be my guest.
Artemis: No! Do not offer, Zoe! I forbid you.
A sorceress who rules a island where she turns men into pigs.
Atlas's daughter, who lives in exile on the island of Ogygia. She looks after Percy when he washes up onto her island, and gives him moonlace before he leaves.
- Adaptational Heroism: She's much kinder than she is in the original mythology, where she's a seductress who kept Odysseus prisoner for years.
- And I Must Scream: Has been trapped on a island for 5,000 years with no company. Percy's one of the few visitors she's ever had.
- Mad Scientist's Beautiful Daughter: She's the daughter of Atlas and supported her father in the first war, which is why she's in exile on an island in the first place.
- Misunderstood Loner with a Heart of Gold: Is kind-hearted and empathetic despite the lack of company.
- Nice Girl: Is depicted as genuinely caring and kind, despite her awful punishment. The sequel series plays around with this set-up, elaborated on over there.
- Really 700 Years Old: She appears to be fifteen or sixteen, although she's been around for millenia.
- Unrequited Tragic Maiden: A variation. She's doomed to always fall in love with the hero who washes up on her island, but never have her affections returned. In a particularly cruel twist, the heroes cannot leave Ogygia until she falls for them.
- What Could Have Been: In-universe. After turning down her offer to stay with her on the island, Percy wonders what would have happened if he'd accepted it. His narration even calls her his biggest what-if.
- Woman in White: Mysterious, beautiful, and wears a sleeveless white Greek dress.
Son of Athena and inventor of the Labyrinth. He's also Quintus, a temporary swordsman trainer at Camp Half-Blood
- Actually, I Am Him: Pulls this near the end of Battle of the Labyrinth when revealing that he and Quintus are the same person.
- The Aloner: Is a rather lonely person in general, and claims to work only for himself.
- Dirty Coward: Tends to run and hide from his problems rather than face them.
- Heroic Sacrifice: Dies to get the Labyrinth, which is tied to his life force, to collapse, and save Camp Half-Blood.
- Meaningful Name: Quintus means "fifth" in Latin, and it's the name for his fifth body.
- The Smart Guy: A master inventor and a genius of his time.
- What the Hell, Hero?:
- Athena pulls this on him when he tricks Perdix into falling off a balcony. To be specific, she turns Perdix into a partridge and then brands him with a mark of said partridge, which would never fade.
- Annabeth tells him that Athena's children are supposed to be wise, not just clever. He realizes she's right, leading to his Heroic Sacrifice and his entrusting of his laptop to her.
A child of Gaia and Tartarus. He was created to avenge the defeat of the Titans, but was defeated and imprisoned in Tartarus. Released in modern times by Percy on accident. He once again tries to destroy the gods and serves as a distraction for Kronos.
- The Dreaded: Feared by the Olympians more than any other threat.
- Eldritch Abomination: More so than anyone else. His body is constantly shifting between every type of monster and new ones and looking at him for too long would drive a demigod insane.
- Father Of A Thousand Young: Fathered nearly all of the major monsters.
- The Juggernaut: Took the combined might of most of the major Olympians battling him for weeks and the last minute arrival of Poseidon and his own army to bring him down.
- Laser-Guided Tykebomb: Created to avenge the Titans' defeat and bring down the Olympians.