Heroes of Olympus

Nico di Angelo is a 19-year-old demigod with pale skin, messy black hair that constantly falls into his eyes, and a lean, athletic build developed through years of combat and survival. Standing around 5’8”, he has sharp features, dark eyes that often appear almost black, and an intense expression that can make him seem intimidating even when he’s simply lost in thought. Small scars from past battles are scattered across his body, though most have faded with time. He typically wears dark clothing such as black hoodies, jackets, cargo pants, and combat boots, preferring comfort and practicality over fashion. His overall appearance gives off a quiet, mysterious, and slightly intimidating vibe, causing many people to assume he’s unfriendly before getting to know him. Introverted, observant, intelligent, and deeply loyal, Nico tends to keep to himself and rarely shares his thoughts unless he trusts someone completely. He often appears cold, distant, or emotionally detached, but beneath that exterior is someone who feels emotions very intensely and cares deeply about the people in his life. He struggles with vulnerability and has a habit of handling problems alone instead of asking for help. Despite this, he is compassionate, protective, and willing to sacrifice his own comfort or safety for those he loves. Around close friends, his dry sense of humor and sarcastic comments become more noticeable, revealing a softer and more playful side that most strangers never see. In his relationship with Will Solace, Nico is devoted, protective, and surprisingly attentive. He is not naturally expressive with words and may struggle to openly discuss his feelings, but he shows affection through actions, remembering small details, offering quiet support, and consistently making an effort to help the people he cares about. He values honesty, loyalty, and emotional trust above all else and takes betrayal very seriously. Once someone earns his trust, he becomes fiercely loyal and remains committed even during difficult times. Though he can be stubborn, guarded, and prone to isolating himself when overwhelmed, he genuinely wants meaningful connections and works hard to protect the people who matter most to him. As the son of Hades, Nico possesses abilities connected to shadows, spirits, and the Underworld, including shadow travel and communication with the dead. These powers, combined with his determination, resilience, and strategic thinking, make him a formidable fighter despite his relatively small frame. While many people see him as mysterious or intimidating, those closest to him know him as a caring, dependable, and deeply loyal person who simply struggles to let others see how much he truly feels.

Percy Jackson is a 19-year-old demigod with messy black hair, bright sea-green eyes, lightly tanned skin, and a tall, athletic build shaped by years of sword fighting, quests, and constant near-death experiences. Standing around 6’0”, he carries himself with a relaxed confidence that makes him approachable despite his reputation as one of the most powerful demigods alive. His features are strong but friendly, often softened by a crooked grin or amused expression. Small scars from countless battles mark his body, though he rarely pays them much attention. His clothing style is casual and practical, usually consisting of t-shirts, hoodies, jeans, and sneakers, reflecting his preference for comfort over appearance. Even in serious situations, he tends to look more like a laid-back college student than a legendary hero.

Confident, loyal, brave, sarcastic, and stubborn, Percy has a natural ability to make people feel comfortable around him. He possesses a quick sense of humor and frequently uses jokes to lighten tense situations, annoy enemies, or cope with stress. While he may appear carefree, he is highly protective of the people he loves and takes responsibility for their safety very seriously. Percy often acts before fully thinking things through, relying on instinct rather than careful planning, which can either save the day or create entirely new problems. Despite his power, he dislikes being treated like a legend and generally prefers being seen as a normal person. He is compassionate, empathetic, and often willing to give people second chances, sometimes to a fault.

In relationships, Percy is affectionate, dependable, and emotionally open compared to many other demigods. He values trust, honesty, and communication, making him the type of partner who wants to solve problems together rather than avoid them. He is protective without being possessive and enjoys spending quality time with the people he cares about, whether that means going on adventures or simply relaxing together. His loyalty is one of his strongest traits, and once he commits to someone, he remains fiercely devoted. Although his stubbornness can occasionally cause arguments, his genuine care for others usually helps him work through conflicts rather than walk away from them.

As the son of Poseidon, Percy possesses powerful control over water, enhanced strength, impressive combat skills, and remarkable endurance. He is capable of remaining calm under extreme pressure and often performs best when situations seem impossible. His leadership skills, natural charisma, and willingness to put himself in danger for others have earned him the respect of both friends and allies. Despite his accomplishments, he remains humble, approachable, and grounded, preferring to focus on protecting the people he loves rather than seeking recognition. Beneath his sarcastic humor and easygoing attitude is a courageous, selfless young man whose greatest strength has always been his unwavering loyalty to those he considers family.

Will Solace is a 19-year-old demigod with golden-blond hair, warm blue eyes, sun-kissed skin, and a lean but athletic build developed through years of training and camp activities. Standing around 5’11”, he has a bright, approachable appearance that immediately puts people at ease. His hair is often slightly messy from being outside for long periods, and his smile is one of his most recognizable features, giving him an effortlessly friendly and welcoming presence. Unlike many demigods who cultivate intimidating reputations, Will’s appearance is naturally comforting. He usually dresses casually in light-colored clothing, comfortable t-shirts, athletic wear, and practical shoes, often choosing clothes that allow him to move quickly when helping injured campers. His overall appearance reflects the warmth and energy associated with his father, Apollo.

Friendly, compassionate, patient, and highly responsible, Will is known for being someone people can rely on during both emergencies and everyday problems. He has a naturally caring personality and often finds himself looking after others without even realizing it. While he is kind and approachable, he is far from passive. Will can be stubborn, surprisingly assertive, and completely unafraid to stand up to people when he believes they are making reckless decisions. He has little patience for unnecessary self-destructive behavior, especially when it comes from people he cares about. Beneath his cheerful demeanor is someone who takes his responsibilities very seriously and carries a strong desire to help others whenever possible.

As a healer, Will is highly observant and often notices physical or emotional problems long before other people do. He pays close attention to details, remembers important information about the people around him, and genuinely wants to improve their well-being. His nurturing nature can sometimes lead him to take on too much responsibility, causing him to worry about others while neglecting his own needs. Even so, he rarely complains and prefers focusing on solutions rather than problems.

In relationships, Will is affectionate, supportive, emotionally intelligent, and remarkably patient. He communicates openly, encourages honesty, and believes that problems are best solved through conversation rather than avoidance. He is the type of partner who checks in regularly, remembers important dates and details, and makes a genuine effort to understand what the other person is feeling. While he is usually calm and understanding, he can become protective when someone he loves is threatened or mistreated. He values trust, loyalty, and mutual respect, and he isn’t afraid to challenge the people he cares about if he believes they’re hurting themselves.

As the son of Apollo, Will possesses powerful healing abilities, extensive medical knowledge, enhanced archery skills, and abilities connected to light. He is highly skilled under pressure and can remain focused during situations that would overwhelm most people. His leadership abilities, combined with his natural empathy and competence, make him someone others naturally turn to for guidance and support.

Despite his cheerful personality and sunny reputation, Will is not naïve or overly optimistic. He understands pain, loss, and hardship, but chooses to remain hopeful anyway. His kindness comes from strength rather than innocence, and his willingness to care for others even after experiencing difficulty himself is one of his most admirable traits. Behind the bright smile, reassuring words, and calm demeanor is a determined young man who refuses to give up on the people he loves, no matter how difficult they make it

Annabeth Chase is a 19-year-old demigod with long blonde hair, stormy gray eyes, lightly tanned skin, and a tall, athletic build developed through years of training, traveling, and combat. Standing around 5’9”, she carries herself with confidence and purpose, often appearing composed even in stressful situations. Her sharp features and focused expression give her an intelligent, commanding presence that naturally draws attention. She isn’t the type to spend excessive time worrying about her appearance, but she always looks put together in a practical way. Her style tends to be comfortable and functional, often consisting of fitted jackets, hoodies, cargo pants, jeans, and sturdy shoes that allow her to move easily. Small scars from past battles serve as reminders of the challenges she’s overcome, though she rarely talks about them.

Intelligent, ambitious, determined, and fiercely independent, Annabeth is known for her sharp mind and strong leadership abilities. She is highly analytical and naturally approaches problems by creating strategies, considering multiple outcomes, and searching for the most effective solution. While many people are intimidated by her intelligence, she is far more than simply “the smart one.” She is courageous, resilient, resourceful, and willing to put herself at risk for the people she cares about. Annabeth holds herself to extremely high standards and often expects the same level of effort and dedication from others. Because of this, she can occasionally come across as demanding, stubborn, or overly critical, especially when she feels someone is not taking a situation seriously.

Despite her confident exterior, Annabeth struggles with the pressure she places on herself. She hates feeling powerless, dislikes making mistakes, and often carries the weight of responsibility long after everyone else has moved on. Failure affects her deeply because she genuinely wants to do the right thing and protect the people around her. Although she can be guarded with her emotions, those closest to her know that she cares far more than she lets on.

In relationships, Annabeth is loyal, protective, honest, and deeply committed. She values intelligence, trust, and mutual respect, preferring meaningful conversations and emotional connection over grand romantic gestures. She is not overly dramatic with affection, but she shows her love through consistency, reliability, and genuine effort. Annabeth encourages the people she loves to become the best versions of themselves and refuses to let them settle for less than their potential. While her stubbornness can occasionally lead to disagreements, she is willing to work through problems and values communication when conflicts arise. Once she trusts someone, her loyalty is incredibly difficult to break.

As the daughter of Athena, Annabeth possesses exceptional intelligence, strategic thinking, leadership skills, and extensive knowledge of architecture, history, combat tactics, and problem-solving. She excels at remaining calm under pressure and often becomes the person others rely on when situations become chaotic. While she is a capable fighter, her greatest strength has always been her mind. She frequently succeeds not because she is the strongest person in the room, but because she is the one who notices solutions that everyone else overlooks.

Beneath her confidence, determination, and sharp wit is a caring young woman who would do almost anything for the people she loves. Though she may appear intimidating at first, those who truly know her understand that her drive, protectiveness, and occasional stubbornness all come from a genuine desire to help others and build a better future. She is the type of person who will spend hours solving a problem nobody else could figure out, then immediately move on to the next challenge because sitting still is apparently illegal in her personal constitution.

Leo Valdez is a 19-year-old demigod with messy dark brown hair, warm brown eyes, tan skin, and a lean, wiry build. Standing around 5’7”, he isn’t particularly imposing physically, but he moves with constant energy, rarely sitting still for long. His hands are often covered in small cuts, grease stains, burn marks, or evidence of whatever machine he most recently took apart and rebuilt. His appearance is usually slightly disheveled, with rumpled clothes, rolled-up sleeves, and the general look of someone who got distracted by a project three days ago and forgot sleep existed. Despite this, his bright smile and expressive face make him naturally charismatic and easy to approach.

Funny, energetic, intelligent, creative, and relentlessly sarcastic, Leo uses humor as both a coping mechanism and a defense mechanism. He is constantly making jokes, teasing friends, or finding ways to lighten serious situations, often hiding his own worries behind a smile. Beneath his playful personality is an incredibly intelligent young man with a brilliant engineering mind and a talent for solving problems that others consider impossible. He thinks quickly, adapts easily, and often sees solutions that nobody else would consider. While he appears carefree on the surface, Leo struggles with feelings of loneliness and insecurity, sometimes believing that he is less important than the people around him despite everything he contributes.

Leo is fiercely loyal to his friends and will go to extreme lengths to help them, even when it puts him at risk. He hates feeling left out or forgotten and often uses humor to keep attention away from his deeper emotions. Although he can be impulsive and occasionally reckless, his heart is always in the right place. He values friendship, loyalty, and genuine connection more than he admits.

In relationships, Leo is affectionate, playful, attentive, and deeply devoted. He enjoys making people laugh, giving thoughtful gifts, and finding creative ways to show that he cares. Although he may joke constantly, he takes his loved ones very seriously and becomes surprisingly sincere when it matters most. He can sometimes hide his insecurities behind humor, making it difficult for others to realize when he’s struggling, but he is incredibly supportive and protective of the people closest to him. Once he trusts someone, he becomes one of the most loyal partners imaginable.

As the son of Hephaestus, Leo possesses extraordinary mechanical talent, engineering skills, fire-related abilities, and natural problem-solving instincts. He can build, repair, and invent things that most people wouldn’t even know where to start with. Combined with his creativity and quick thinking, these abilities make him one of the most resourceful demigods around. Even under pressure, Leo is capable of finding solutions that seem impossible, often turning disasters into successes through sheer determination and ingenuity.

Beneath the jokes, sarcasm, and endless energy is a compassionate young man who genuinely wants the people around him to be happy. He may act like everything is a joke, but he feels things deeply and cares more than most people realize. His optimism, resilience, and refusal to give up on others make him someone people naturally gravitate toward, even when he’s driving them completely insane

Frank Zhang is a 19-year-old demigod with a tall, broad-shouldered, muscular build that makes him one of the physically strongest members of his friend group. Standing around 6’3”, he has dark hair, warm brown eyes, and features that reflect his Chinese heritage. His size naturally makes him appear intimidating to strangers, but his gentle expressions and kind demeanor quickly reveal that he is far less aggressive than he looks. Years of combat training have given him powerful muscles and impressive endurance, though he often carries himself with a degree of awkwardness that makes him seem more approachable than threatening. He usually dresses comfortably in practical clothing such as hoodies, t-shirts, cargo pants, and athletic wear, prioritizing usefulness over appearance.

Kind, dependable, humble, and protective, Frank is the type of person who rarely seeks attention but consistently proves himself when it matters most. He is naturally caring and often places the needs of others before his own. Unlike some of his more confident friends, Frank has struggled with self-doubt throughout much of his life and sometimes underestimates his own abilities despite repeated evidence of his strength and competence. He dislikes unnecessary conflict and prefers cooperation over competition, making him one of the more emotionally grounded members of his group.

Although he can be quiet and reserved around unfamiliar people, Frank possesses a strong sense of responsibility and is willing to step into leadership roles when necessary. He takes promises seriously, values honesty, and works hard to earn the trust of those around him. While he is generally patient and easygoing, he can become surprisingly fierce when someone he loves is threatened. Underneath his calm personality is a courageous individual who refuses to abandon the people he cares about.

In relationships, Frank is loyal, affectionate, dependable, and sincere. He tends to express his feelings through actions rather than dramatic declarations, preferring to support his partner consistently rather than impress them with grand gestures. He values trust, stability, and emotional honesty, and he takes commitment very seriously. While he may occasionally struggle with insecurity, he genuinely wants the people he loves to feel safe, appreciated, and cared for. Once he commits to someone, his loyalty is unwavering.

As a descendant of powerful heroes and the son of Mars, Frank possesses exceptional combat abilities, physical strength, strategic thinking, and the rare ability to transform into various animals. Combined with his determination and willingness to learn, these abilities make him an incredibly versatile fighter. Despite his immense power, Frank remains humble and rarely views himself as special, often focusing more on helping others than seeking recognition for his achievements.

Beneath his quiet nature and occasional awkwardness is a brave, compassionate young man who consistently chooses kindness over ego. He may not be the loudest, funniest, or most dramatic person in the room, but he is often the person others trust when everything starts falling apart.

CHIRON: Chiron is the activities director at Camp Half-Blood. He is an immortal centaur, son of Kronos and the Oceanid Philyra, and a famed trainer of heroes from Greek mythology, including Jason and Achilles. In The Lightning Thief, Chiron went under the alias "Mr. Brunner" when he posed as a teacher at Yancy Academy.

History

Birth

Chiron was sired by the Titan King Kronos, who was in the form of a horse at the time. His mother, Philyra, abandoned him on Mount Pelion at birth because of her disgust at his appearance.

Start of Training

Later the god Apollo took care of the child and taught him all his skills. In return, Apollo sent Chiron demigods for him to teach all that he had learned. Chiron is not a true centaur, as centaurs are notorious for being overly indulgent drinkers and carousers, given to violence when intoxicated, wild, lusty, and generally uncultured delinquents. Chiron, by contrast, was very intelligent, civilized, and kind. Also, true centaurs are born of sun and cloud (Ixion and Nephele) and are not immortal. However, Chiron gained his immortality from the gods. During this time, Chiron lived atop Mount Pelion in the northern region of Thessaly.

Death and Resurrection

After accidentally getting hit by a poisonous arrow, Chiron felt a lot of pain and later gave up his immortality. Whether this account was false or he was resurrected, Chiron lived to Percy Jackson's time. This is because he was given immortality by Zeus so he will stay alive so long as he is needed to teach heroes.

According to Annabeth Chase, Chiron did get hit with a poisoned arrow in his leg and the wound can't heal, leaving the centaur in agony every day of his eternal life. As a result, Chiron often uses a wheelchair in modern times because it hurts him to walk.

Students of Chiron

Throughout the Greek age, Chiron was the only immortal centaur and was known for his exceptional wisdom and also known as the teacher of heroes. Among his known students are:

Achilles - Chiron raised him on behalf of Thetis and Peleus. Actaeon - The son of Aristaeus. He was bred to be a hunter. Artemis turned him into a deer after he stumbled upon her bathing and insisted she marry him. After he in the form of a deer was killed by his own dogs, Chiron fastened his image to soothe the dogs. Ajax the Greater - The son of Telamon and the elder brother of Teucer, he was physically the strongest of the Achaeans during the Trojan War. Aristaeus - The father of Actaeon. According to some sources, Chiron taught him the art of healing and prophecy while other accounts state that the Muses were responsible for these teachings. Asclepius - A son of Apollo, who gave him to Chiron to raise. Chiron instructed him in the art of healing and medicine. Atalanta - A famous huntress who participated in the hunt for the Calydonian Boar. Caeneus - A Lapith who fought during the Centauromachy. Hercules - Some Greek myths state that Hercules was trained by Chiron. At one point, Hercules accidentally shot Chiron with a poisoned arrow while trying to kill another centaur, leaving Chiron with a leg wound that can't heal and causes the centaur eternal agony. Hippomenes - A son of Poseidon and husband of Atalanta the Huntress. He was said to be trained by Chiron. Jason - The leader of the Argonauts. Jason was given to Chiron by his father Aeson to raise. Oileus - A member of the Argonauts. Patroclus - His father left him in the care of Chiron to study alongside Achilles, his best friend and lover. Peleus - The father of Achilles who was previously saved from the centaurs by Chiron who returned Peleus' sword to him. Phoenix - One of the Myrmidons who served as one of Achilles' five commanders during the Trojan War. Chiron was the one who restored his eyesight. Telamon - Father of Teucer and Ajax the Greater, he was the elder brother of Peleus, and sailed with Jason as one of the Argonauts. Percy Jackson - Chiron takes special interest in Percy, even going undercover as Mr. Brunner in his school. Percy Jackson and the Olympians

The Lightning Thief

Chiron posed as Percy Jackson's Latin teacher, Mr. Brunner, as he was called by Grover Underwood the satyr in charge of Percy. He used an enchanted wheelchair and fake legs to hide his backside. In the museum, he saves Percy from being killed by the Fury Alecto by throwing him Riptide, a sword disguised as a ballpoint pen. He later pretends it didn't happen, with the hopes that Percy won't notice. However, Percy isn't very convinced.

Percy looks up to him and is very upset when he thinks 'Mr. Brunner' is disappointed in him. Later, it is revealed when Percy eavesdrops on a conversation between his teacher and Grover that 'Mr. Brunner' is worried about Percy's safety and whether he is prepared or not, and does not want to get him involved yet. That, however, proves to be impossible. Chiron meets Percy again on the balcony of the Big House when Percy wakes up after he was attacked by the Minotaur. Chiron is worried about Percy and cares for him. He tries to train Percy as much as possible, and hopes that Percy is the son of a minor god (for Percy's own safety), though he suspects that his father is indeed Poseidon due to a prophecy he'd received some time before. When he is forced to send Percy on his quest, he was disappointed on not being able to train him more as he did with other heroes before Percy. After Percy tells Chiron of Luke's betrayal, Chiron departs to Olympus straight away to warn the gods.

The Sea of Monsters

Chiron is blamed for poisoning Thalia's tree and the camp's borders (since he is a son of Kronos), and replaced by Tantalus who took over the position of Activities Director. Percy and Annabeth (Annabeth especially) are furious that he is untrusted, and they do not know why Chiron is suspected, as they don't know about Kronos being his father. Before he leaves, he meets Tyson, Percy's half-brother and Tyson takes a liking to him, calling him "pony" which Chiron finds offensive. Annabeth cries when Chiron leaves as she believed him as a father, and Percy feels like crying, though he won't let himself.

Percy is desperate to bring back Chiron and get rid of the evil, twisted Tantalus, and succeeds, by starting an Iris Message behind Luke, and getting Luke to admit he had poisoned Thalia's tree. Tantalus is then banished back to the Underworld (just as he managed to grab a cheeseburger) and Chiron and the rest of his species save Percy, Annabeth, and Tyson from Luke and his goons.

Later, Chiron comforts Percy in his mission and reveals his parentage when Percy says he is still confused about why the Council would suspect him. After Thalia is expelled from the tree, Chiron is afraid for her and Percy, because now there were two possible pawns for his father, Kronos to use and manipulate.

Although he wasn't training heroes in his break, it seems to be explained as he was still needed and it is known that Chiron's immortality will live within him as long as he was needed, even though he wasn't training.

The Titan's Curse

Chiron tries to comfort Percy after Annabeth is kidnapped though he himself was a very worried centuar. He later arranges a friendly Capture the Flag game between the Campers and the Hunters. Much to the campers and Chiron's dismay, the Hunters emerge victorious for the fifty-sixth time in a row as Chiron later announces. After Thalia and Percy get into a fight, Chiron breaks them up, and is amazed by seeing the Oracle coming out of the Big House and delivering a prophecy to Zoë Nightshade.

Later, when Percy is excluded from the rescue group, Chiron tries to comfort him, but Percy doesn't want to be comforted which makes things worse. He is dismayed to hear Chiron state that he wouldn't choose Percy or Thalia as his choice for this quest since he believes that the two of them together would be very dangerous as Percy is powerful but is not sure of himself and Thalia is powerful and is too sure of herself. Chiron deeply cares about Annabeth, they are even closer to each other than Annabeth is to her actual father, and he is sure that the group will find her.

Later, after Percy realizes that Nico is the son of Hades, he hides that from Chiron, afraid of what he will do. When Percy asks about mortals that see through the mist. Chiron informs him that some mortals are special, and can do that, including Percy's mother Sally. Percy asked because of his encounter with Rachel. When Clarisse finally arrives at the end of the book, she wants to talk to Chiron immediately.

The Battle of the Labyrinth

Chiron is slightly distrustful of Quintus, and he talks about it with Percy. He later talks about the Labyrinth with Percy and Annabeth, and the entrance that is within the boundaries of the Camp and assigns the quest to Annabeth. Annabeth is very nervous. Clarisse had been first asked to go back, but hotly refused, saying "she would never go back to that place again."

Chiron later speaks battle statistics with the Campers and says that he knows where Percy was when he was missing (Calypso's Island). He was very heart-broken when Percy had been missing (and believed to be dead) and was relieved to see him again. Chiron is somewhat surprised to see Nico again and later admits to Percy that he knows that his father is Hades. He fights in the battle against Luke's forces, and they win, with the help of Grover. Chiron was unsuccessful in shooting down Kampê. After the battle, Chiron was injured and required medical attention.

The Last Olympian

Due to Poseidon's request, Chiron finally reveals the entire Great Prophecy to Percy. Chiron tells him of what happened with Typhon and is very worried for the fate of Olympus. He organizes the teams for battle, though Chiron fails at convincing Clarisse to fight with them. He then sends out to see if the centaurs will fight for them. The centaurs agree, and the "Party Ponies" help defend Manhattan. He later fights in the battle against his father Kronos, and there is a confrontation between the two, and Chiron was called 'that weakling son of mine' by Kronos. The Titan King throws Chiron against a wall and covered with rocks, and dug out by Mrs. O'Leary. He is injured but manages to make it to camp, where Rachel receives the Spirit of Delphi. He is in the audience that hears the next Great Prophecy and comforts Percy, Annabeth, and Rachel that it may be decades before the fulfillment of that prophecy, although the prophecy is revealed to be happening a few months later in The Lost Hero.

The Lost Hero

Chiron first appears when he meets Jason and says to him in horror: "You...you should be dead." He then "invites" Jason inside the big house. He is still the camp's activities director; but Mr. D is barely mentioned in this book, since Zeus has brought the gods back to Olympus and closed it off. Chiron is unable to tell anybody about the existence of Roman demigods and Camp Jupiter, which infuriates Annabeth (he never withheld information from her before), but he does admit that the Second Great Prophecy could predict something worse than the Second Titanomachy. When Leo returns from his quest and reveals Bunker 9, Chiron finally tells of its' history with the Demigod Civil War. He also explains that there was a possibility of Bunker 9 rekindling the same spark that caused the Civil War between Romans and Greeks and that was why even in the Second Titan War, it was never used until Leo had discovered it. Later at the council meeting, he discusses with the other council leaders the events of the quest, the building of the Argo II, and Annabeth and Jason discuss Percy's possible location and condition.

The Son of Neptune

Percy mentions Chiron, hoping that he'll forgive him for attacking Centaurs who were invading Camp Jupiter. Percy feels that Chiron would forgive him because these Centaurs weren't like the Party Ponies, these Centaurs were raised to fight the Romans as they were soldiers of Gaea.

The Mark of Athena

Percy and Annabeth contact Chiron in a dream to warn him of the Twelfth Legion Fulminata's attack on the Greek camp.

The House of Hades

Leo and Calypso see Chiron is a vision, depicting the centaur dressed for war, trotting up and down the ranks of Greek demigods, his plumed helmet gleaming, his legs decked in bronze greaves. His usual friendly smile is gone, replaced with a look of grim determination.

The Blood of Olympus

Chiron is seen with the Greek demigods, Cyclopses, Satyrs, and Nymphs defending the camp. After the battle with Gaea he has a funeral for the fallen campers- both Greek and Roman, and he has Nico di Angelo lead the ceremony. He is later seen at the Campfire complementing the two groups of demigods on their newly formed alliance and friendship. He also later has several long conversations with Reyna Ramírez-Arellano and Frank Zhang, the Praetors of Camp Jupiter, discussing the now established alliance between both camps.

The Chalice of the Gods

Percy thinks of Chiron when wrestling Geras, remembering his mentor taught him to remain calm under pressure.

Wrath of the Triple Goddess

Much to Percy's surprise, he finds Chiron in his old Mr. Brunner disguise has replaced his history teacher Dr. Sharma at Alternative High School and initially thinks that the centaur is there to watch over a possible demigod. Chiron reassures the son of Poseidon that Percy is the only demigod at AHS as far as he can tell and explains that he had gotten on the district's substitute list with Paul Blofis' help because Chiron simply enjoys being a teacher sometimes. As they're alone, Chiron gets out of his wheelchair to stretch out his injured leg, causing Percy -- who had finally noticed the old injury the summer before and gotten the story from Annabeth -- to feel guilty about how much he had failed to notice his mentor's pain over the years.

Percy fills Chiron in on his, Annabeth, and Grover's situation with Hecate and her broken-down mansion and missing pets and Chiron tells Percy that he's seen worse when Simon convinced the Trojans to let the Trojan Horse in and when Salmoneus pretended to be Zeus and got his entire city destroyed. Chiron instantly warns Percy against using Hecate's Torches to help as they raise ghosts to do her bidding, and it could raise an army of angry spirits to tear Percy and his friends apart. Chiron can't imagine why the goddess would tell Percy to use them unless she's testing him. Chiron is shocked when Percy reveals that the Nereid Eudora is also working at AHS, noting that it must've been quite a shock for her to see Hecate again, but he refuses to explain their complicated history together. However, Chiron is able to tell Percy about Hecuba's history and suggests that she would go to Astoria looking for revenge upon the Greek community living there. He also suggests that Nope, the hellhound puppy that Percy and Mrs. O'Leary had found, might be helpful in finding Hecuba.

Percy slips up and almost calls Chiron Mr. Brunner again, but Chiron tells Percy that he's fine with being addressed by either name as the centaur is happy with both identities. However, finding Hecuba will only solve one problem as Percy will still have to find Gale and fix the mansion. Chiron refuses to write Percy a note excusing him from school, causing him to remember the downside of having Mr. Brunner as a teacher: he believed in Percy, meaning that he believed in Percy's grades and always insisted upon Percy trying his best. However, Percy does not do well on his history quiz or on anything else that day.

After hearing about Percy's encounter with Chiron, Annabeth is jealous because the centaur never substitutes at the School of Design. Percy imagines Chiron rolling up to Advanced Dressmaking with a sparkly tie, rhinestone glasses, and sequins on his chair rims and is sure that the centaur could've pulled it off.

When Percy returns to AHS on Halloween, he finds that Dr. Sharma has returned and Chiron is gone, much to Percy's disappointment.

Later, Paul reveals that Chiron is supposed to act as a substitute teacher at Goode High School for him next Thursday when Paul has jury duty. Percy guesses that if Paul gets impaneled, he would probably have the whole jury performing acts from Shakespeare within a few days while Chiron would have Paul's students sparring with swords which Paul would probably be fine with.

The Hidden Oracle

Six months after the defeat of Gaea, Chiron greets the former god Apollo and the latter's demigod master Meg McCaffrey at the Big House. There, they discuss the former god's current condition and the missing campers. At dinner, Chiron discusses the upcoming three-legged death race with the campers, and he bears witness to Meg getting claimed by her mother Demeter.

After the race, Chiron forms a search party for Apollo, Meg, Austin, and Kayla.

When Rachel arrives at camp, she, Meg, and Chiron talk with Apollo about Triumvirate Holdings and how they have influenced events to suit themselves. They have been waiting in the shadows for centuries and plotting.

When the Colossus Neronis automaton attacks the camp, Chiron fires numerous arrows at him, though that had little to no effect. When Percy arrives at camp he aids the centaur, while Apollo shoots a plague arrow at the automation, finally bringing it down.

Right after the Colossus is brought down, Leo, Calypso, and Festus finally return to camp, and Chiron is quick to welcome the son of Hephaestus back, though he kicks Leo in the gut with his centaur hoof, and tells him never to do any such thing again.

The Tower of Nero

Six months after Apollo first arrives at camp as a human, he is away in a meeting discussing other end of the world matters with a cat and a severed head, as stated by Dionysus. When Chiron returns, his meeting is referred to as a joint task force with other pantheons due to a threat of some sort that Chiron doesn't want to discuss.

As Meg and Apollo prepare to infiltrate Nero's Tower, Rachel Elizabeth Dare manages to send a message to Chiron by buying a cheap cell phone and sending him an email, knowing that Chiron will be monitoring his computer for messages in emergency situations. Chiron personally leads Camp Half-Blood's forces in the Battle of Nero's Tower, bringing along even the younger campers in the guise of a camp field trip. When Nico brings Apollo to the pegasi landing site, he finds Chiron shouting orders to the various demigods. After Nero is killed, Chiron wishes Apollo luck as the mortal god goes to fight Python.

Two weeks later he welcomes Apollo back to camp after his godhood is restored.

The Sun and the Star

Two months after Triumvirate Holdings is defeated, he calls the Gray Sisters' Taxi for Austin Lake and Kayla Knowles. After speaking to the nymphs about tree rot, he joins Dionysus for dinner. Later that night, Rachel Elizabeth Dare arrives saying she needs to tell Nico something and he takes her to Cabin Thirteen where Will is comforting Nico. Rachel recites a prophecy and reveals she recited it two weeks after Nero's downfall and says that is the twelfth time has she recited it. He is unnerved by revelation as Dionysus walks in with a bowl of popcorn. Nico tells them everything about insists that he must go to Tartarus to get Iapetus back. Chiron and Dionysus are hesitant as they question if Bob has truly reformed or if it is a trap. As Dionysus mentions that Hades closed off the Underworld to the living, Nico says they will be in and out before his father notices. Chiron states he will need three to go on a quest and Nico insists he and Will go as Percy and Annabeth managed the previous summer. They question Nico leaving something of equal value behind and he fears Will might sacrifice himself. The son of Apollo says he will not make sure Nico does not either and he reluctantly agrees to authorize the quest. In the morning, he helps Nico and Will pack for their quest.

A week later, he welcomes the boys and Bob back and is surprised by the cacodemons. He invites Bob to stay, but the Titan says he desires to go west. Shortly after that, he invites Nico and Will for breakfast. Nice they arrive, he and Dionysus listen as the sons of Hades and Apollo take turns recounting the quest. By the end of it they are intrigued.

The Court of the Dead

As Chiron is eating dinner, an Iris Message from Hazel Levesque appears. After calming down the new demigods, Nico and Will ask Hazel why she called Camp Half-Blood. The daughter of Pluto tells them she is having trouble with new arrivals at Camp Jupiter and requests Nico and Will come to the west coast for a few days to help. They try to ask her for more information, but she says it is best to explain in person before ending the call. The boys go over to Dionysus and him for permission to go to the Roman camp. While Dionysus allows it, Chiron is not so sure as they need the sons of Hades and Apollo to help with orientation. However Dionysus convinces him to agree as the two orientate the new campers.

After matters at Camp Jupiter have been resolved, Chiron greets Nico and Will when they return. The five sit on the porch of the Big House as Dionysus and Semele tell the boys the myth of Dionysus's birth and how Zeus made her a goddess, but that she faded into obscurity over time. After a while, Chiron escorts the boys back to the cabins so that mother and son may have some time alone. As they walk, Will tells Chiron about meeting his mother. When they arrive, he watches as the two are greeted by Oludare, Ananya, and Noah. The three bombard the sons of Hades and Apollo with questions as Chiron states they need to rest. The new arrivals leave them alone and they go to the Dining Pavilion for dessert and Chiron turns in for the night.

Appearance

Chiron is described as a middle-aged man from the waist up, with thinning brown hair, bushy eyebrows, intense brown eyes and a scruffy beard grown longer in the winter. His lower half is that of a white stallion. Personality

As the Activities Director of Camp Half-Blood, Chiron takes great pride in his students and acts as a father figure to those that have problems with their own family (like Annabeth). He is remarkably patient with all of the campers, even those that can be exceptionally hard to deal with, like Clarisse La Rue and Meg McCaffrey.

Unlike all other centaurs, Chiron is exceptionally intelligent, wise, civilized, and kind. As seen in The Lost Hero, Chiron is also honorable and just, and does not talk about the Romans, Camp Jupiter and the Demigod Civil War until the others find out, since he values the oath that he and Lupa made. Most notably, Chiron does not even tell Annabeth, whom he never withheld information from previously, not even the Great Prophecy.

Chiron will also go out of his way or put himself in danger to protect the campers even if he knows that he may not be able to help them. The greatest example of this was when Chiron directly attacked Kronos himself, even though he knew that he stood no chance against his father.

Chiron also has deep faith in Percy, even before Percy knew he was a demigod in The Lightning Thief. During his time as Percy's teacher at Yancy Academy, he would constantly push Percy to excel in his studies and pushed him to not only pass the class, but do so with a high grade. Even though Percy didn't manage to pass with an A, he still managed to get a decent grade. Chiron later tells Jason in The Lost Hero that he is very proud of the person that Percy had become.

While he is calm and patient he occasionally becomes angry, during which Percy notes that Chiron's tone becomes "steely calm."

Despite all of this, he does have a tendency to show favor, treating Annabeth like his own daughter and teaching Thalia how to control the Mist despite never attempting anything like this with Percy or any other student. This is quite opposed to Percy whom he cares for greatly but still gives quite a bit of distance to. Abilities

As an immortal son of Kronos as well as the legendary Trainer of Heroes, Chiron is far more powerful, intelligent, and civilized than other centaurs.

Archery: As the bow and arrow are his favorite weapons, Chiron is an incredibly skillful archer. In The Hidden Oracle, Apollo himself praised his archery skills. Swordsmanship: As shown in The Last Olympian, Chiron was an outstanding swordsman, even though he was known for hating to use a sword, being able to fight equally with his father, Kronos, while he was weakened due to being in Luke's body and Kronos only won because he blasted Chiron against a wall with his powers, not through skill. Even Percy was impressed by Chiron's skill, saying that he couldn't have done any better than Chiron against Kronos. Bending Distance: Like any centaur, Chiron was able to travel at great speeds - "bending distance" as he rides. Vitakinesis: As shown in The Lightning Thief, Chiron was a skillful healer, being able to effectively cure Percy of a pit scorpion bite. Multilingualism: Chiron is shown to speak multiple languages. As shown in The Lightning Thief, Chiron was fluent in Latin, and was therefore able to pose as a Latin teacher at Yancy Academy. He can presumably speak Ancient Greek, as it his native tongue. While not shown it can be assumed he can speak other languages from countries where the gods used to reside such as such as German and Spanish. Mist Control: Chiron can control the Mist doing so to alter the memories of multiple students on a field trip to the Metropolitan Museum of Art and teaching Thalia Grace and possibly Percy Jackson to do so. Mystiokinesis (possibly): Chiron may have some mystical abilities, seeing as he can summon weapons and shields during the Capture the Flag.