|“||And I don't have to see the future to tell you what to do now, do I?||”|
–Rachel to Percy, in The Last Olympian
Rachel comes from a rich and well-known family. Her father is a highly accomplished businessman and her mother is a social worker. When she was six years old, her pet hamster died, which resulted in her family calling Dr. Arkwright , a therapist, to help her get over her hamster's death.
As she grew up, Rachel developed a rocky relationship with her parents, especially with her father because his business tears down wildlife. Her father's actions eventuallly played a part in the slow fading of the wildlife god Pan.Percy first meets Rachel at the Hoover Dam, where he mistakes the sound of her blowing her nose for a skeleton soldier speaking, and tries to run his sword through her, but it doesn't harm her because she's mortal. She sees that Riptide is a sword, and Percy is dumbfounded that a mortal is seeing through the Mist. Rachel then sees the skeleton soldiers, and tells Percy to hide. He runs into a bathroom, and she fakes her emotions and appears freaked out, then tells the skeleton soldiers that 'some guy with a sword' ran in the other direction so that Percy won't get caught. They believe her, and after they leave, Percy tells her to forget what happened. She tells him her name and asks for his. His answer is "Percy... gotta go!"
Percy does not see Rachel again for the rest of the book, and he assumed she lived near Hoover Dam although it is later revealed that she lives in New York.
Percy runs into Rachel at the orientation of his new school, Goode High School. He tries not to run into her again because that will cause awkward questions. But, instead, she finds him, and warns him about the two cheerleaders that have been following him who are actually empousai: monsters that are 1/3 vampire, 1/3 automaton, and 1/3 donkey.
They hide, and Percy tells Rachel that the Greek gods are real, and just about when he is going to tell her that he is a demigod, the cheerleaders find them and attack.
After a skirmish with Kelli and Tammi, the two empousai cheerleaders, there is an explosion, and Rachel rushes Percy out the back exit, and they run into Annabeth Chase. Rachel tells Percy to run, and that she will make up some story. She writes her phone number on his hand with a permanent marker, telling him to call her, because he owes her an explanation, and much to Annabeth's dismay, Percy ends up memorizing her number.
Later, after wandering through the Labyrinth for a while, Percy goes to her for help in navigating Daedalus' Labyrinth in order to locate Daedalus. She sets off with Percy and Annabeth through the maze because they need her help. The demigods are worried someone will try to find her, but she explains that no one would care if she were gone and leaves it at that. After finding that Daedalus has struck a bargain with Kronos, she escapes with Percy and Annabeth and Nico di Angelo whom the empousa captured. Eventually, they find Kronos' headquarters. Kronos has, however, inhabited Luke Castellan and attempts to chase Percy down. Rachel appears with Annabeth and Nico. She throws her blue hairbrush at Luke's face, which momentarily confuses Kronos, who then answers in Luke's voice. She also mysteriously manages to convince a limousine driver to ditch his client and take her and the others around to look for an entrance into the Labyrinth. She also assists in finding the lost god Pan and is present for his death. Later she parts ways with Percy, Annabeth, Nico, Grover, and Tyson, but not before revealing that her father is a wealthy businessman who buys up land and turns it into malls. Pan's death affects her, mainly because of her father's job. She expresses interest in hanging out with Percy again, to Annabeth's dismay. Percy promises to call her and mentions that he has memorized her number, much to Rachel's delight. Later, during his birthday party, Percy laments not thinking of inviting her over but was too afraid to try.
Rachel grows more and more fond of Percy throughout, just as Annabeth grows very jealous of her. Rachel sees that Percy and Annabeth seem to have a lot more feelings for each other than they will admit. She can also see that Annabeth is jealous of her hanging out with Percy, and tries to give him the hint that Annabeth likes him too, but Percy doesn't seem to get it and she calls him "blind" because he is a boy. It is, however, made clear that Percy does have some feelings towards Annabeth, though he is oblivious that she returns them.
Rachel and Percy are on the beach, driving Percy's stepdad's car around when Beckendorf comes on Blackjack, the Pegasus, to take Percy away so they can bomb the Princess Andromeda with Greek fire. Before he leaves, Rachel kisses him. However, Beckendorf interrupts on Blackjack. Beckendorf later makes a joke about telling Annabeth about it, and Percy responds by saying, "Oh gods, don't even think about it."
Rachel later must go with her parents on a vacation, but she soon realizes something is wrong. She begins painting things she had never seen, such as Luke as a young boy. She also wrote Percy's name, Perseus, in Ancient Greek on the beach in the sand. She heads to New York City to find out what is happening with Percy and tells him that he isn't the hero of the Prophecy.
When the battle is over and she returns to Camp Half-Blood, Rachel realizes that she can take in the Oracle's spirit, and becomes the Oracle of Delphi. Since being an Oracle requires the host to be a maiden, she tells Percy that he is a distraction to her. She was born with the gift, and with the curse of Hades lifted, successfully becomes the new Oracle. She decides to still go to school, but shortly before she leaves she recites a prophecy, which is assumed to be the next Great Prophecy. She is also shown to be worried about going to school while being the Oracle's host, since she might suddenly speak a prophecy in the middle of class.
Piper McLean meets Rachel in the Hera cabin when she goes to Camp Half-Blood. Rachel gets taken over by Hera, who gives Piper a message: "Free me." She becomes afraid when Piper faints, thinking she might have killed her. While at the Campfire, she begins to repeat the new Great Prophecy to everyone, but Jason Grace finishes it, except he says it in Latin, making everyone look at him. The other campers begin to ask her if the Great Prophecy has started, claiming she should know because she is the Oracle. She eventually says that it has and some of the seven mentioned are at the campfire tonight while some are not. She also gives them a new prophecy for the Quest for Hera, and then collapses into a chair.
While not physically present, Rachel is mentioned several times. She is first mentioned by Annabeth when she recalled her "love story" with Percy. Chiron later mentions that Rachel was comparing notes with Ella the harpy to see if they could stop the invasion.
While in Tartarus, Annabeth uses a Hermes shrine to send a message to Rachel to get Reyna to bring the Athena Parthenos to Camp Half-Blood to bring peace between the two camps. Rachel gets the message and she and Grover meet with Reyna and Octavian. While Rachel is able to convince Reyna, Octavian uses the opportunity to take power and plan an attack on Camp Half-Blood.
Rachel goes to Camp Jupiter with Ella and Tyson to help put together the Sybilline Books.
Chiron sends two satyrs to get her when Apollo arrives. They head to her cave and discuss current events. She tells then about Triumvirate Holdings and how they were involved in both wars with the Titans and Giants. She gets upset at Apollo after learning their are other oracles besides her.
She and Percy talk to Apollo when he is about to leave for his quest to find the oracles.
Rachel is very artistic, witty, and kind. She enjoys volunteering for charity events to help schools in the area to keep their art programs open. She is also very open-minded, being able to accept that Percy is a demigod and that monsters do exist.
Rachel can be very blunt at times and has a habit of talking a mile a minute, which Percy described as "punching him with words." She is very brave, throwing a paintbrosh in the face of Kronos' host to escape. Like her parents, Rachel can be stubborn at times, as she doesn't like to accept help from anyone else unless she has no other choice.
Rachel is described a as being a tall, slim girl with frizzy red hair, freckled face and green eyes. She is noticed as attractive by a jealous Annabeth.
Rachel wears over-large shirts, doodles on her jeans, and seems to poke holes in them when she is bored. In The Battle of the Labyrinth and The Last Olympian, she dresses in gold and paints her whole visible head of the same color for art projects. Percy described her as she had been touched by King Midas and looked "like a million golden drachmas", with the exception of her eyes.
As an Oracle, Rachel walks barefooted. In The Lost Hero, she wears her Clarion Ladies Academy uniform at Camp Half-Blood while giving out the prophecy. In The Hidden Oracle, she starts to straighten her hair and her freckles have vanished.
- Clear Sight: Rachel has the ability to see through the Mist. Her ability is stronger even compared to demigods, to the point that she can navigate through the Labyrinth and foresee its various traps.
- Painting: Rachel can paint with her feet as well as with her hands. She has deep knowledge about historical paintings, to the point she could discuss with someone as smart as Annabeth.
- Resistence: Rachel can stand still for extended periods of time while painted gold as a living statue.
- Wealth (limited): Rachel can use the influence of the her father's wealth to arrange services, though she rarely uses them.
As the current host of the Oracle of Delphi, Rachel obtained the next powers:
- Prophecy: Though she is a mortal, Rachel always had the ability to see fragments of the future and the destinies of others. After the Second Titan War, Rachel took the soul of the Oracle in order to properly see the past and future, obtains fragments of truth, and make prophecies. However, she doesn't always remember what she said while she is talking possessed by the Spirit of Delphi.
- Divine Protection (limited): As the Oracle, Rachel is protected from many unfortunate events such as death even by the Gods, though she can be cursed.
Nothing is known about Rachel's education before she met the demigods' existence. The following are her schools from 9th grade on up.
Her father is a land developer and her mother is a social worker, although she doesn't feel very comfortable around them. It is said that her parents hate several events they constantly do, like going to the beach, but they are too stubborn to admit it.
Rachel strongly disagrees with the job her father does which consists in finding pieces of the wild and developing them. Because of that, she refuses to ask her father for money or use his influence unless she has no other choice, as seen in The Battle of the Labyrinth. Her father wants her to go to a private school for her girls, but Rachel objectively denied wanting to go there, though she later made a deal with her father in The Last Olympians, so she currently attends the private school.
Rachel is currently unable to date anyone due to her status as Oracle of Delphi.
Rachel found Percy interesting from the moment they first met at the Hoover Dam. She agreed to help him in the Labyrinth, much to Annabeth's annoyance. She helps Percy out when she can. Percy and Rachel grew much closer between The Battle of the Labyrinth and The Last Olympian. He passes time with her when he needs time away from camp. Rachel genuinely cares for Percy, to the point of making a deal with her father in order to travel home and tell him his real part in the Prophecy.
Rachel showed signs of liking Percy, but is aware of Annabeth's feelings for him as well and calls Percy blind for not seeing it. When the two had to part, Rachel was happy when Percy told her he remembered her phone number and they would hang out. Rachel later asked him what it would take for the dumb guy to kiss the girl, and Percy finally realizes she liked him. They are interrupted however when Percy has to go on a mission, causing Rachel much stress and aggravation, to the point of tossing darts at a picture of Percy. However, she still came to his aid when she thought he was in trouble. While on Mount Olympus, Rachel thanks Percy for showing her the world of gods and monsters, but their destinies aren't linked, meaning they wouldn't have a romantic future together. Percy commented that he was dumped before they even started dating, but the two remain friends after Rachel becomes the Oracle.
Annabeth and Rachel had a bad relationship at first. Annabeth was jealous of her while Rachel showed indifference toward Annabeth, but knows she wanted to guide Labyrinth and liked Percy, who hadn't notice yet. Because of this, Annabeth insulted Rachel during their first meeting and was very angry.
However, Annabeth softened up when she heard about Rachel's unpleasant home life, a topic that Annabeth could understand. The two then started to talk about their interest in arts. While the two were at odds most of the time, Annabeth risked her life trying to save Rachel from a falling helicopter during The Last Olympian and is more willing to talk to her. After Rachel became the Oracle (meaning she could no longer date), Annabeth's jealousy completely vanished. By the end of the book, they are friends.
Rachel feels personally responsible for the death of Pan due to her father's work. However, Pan didn't resent her and gave her some of his knowledge when she encountered him in the Labyrinth.
Rachel is a Hebrew name sometimes seen as "Rachael" meaning "sheep; one with purity." This could be a reference to the fact that once someone become the Oracle, they must remain virgin.
Elizabeth is a Hebrew and Greek name meaning "My God is an oath" or "My God is abundance." This could reference Rachel's oath to Apollo to become the Oracle of Delphi.
- Her name, Rachel Elizabeth Dare, can be abbreviated to spell "RED" which is the colour of her hair.
- In most of the books, Rachel's full name is almost always used, even if she is not around. She has only been called Rachel instead of Rachel Elizabeth Dare on a few occasions.
- Unlike other mortals, Rachel could resist Morpheus's spell during the Battle of Manhattan. This was probably because she was out of the spell's affected area.
- It was said that the Clarion Ladies Academy was in New Hampshire in The Last Olympian, but in The Lost Hero, Annabeth had said it was in Connecticut.
- Rachel's only two rules about music are that no two songs on her iPod can sound the same, and they all had to be strange.
- Her hair colour is her only defining feature in her first appearance in the series.
- Rachel and the augur of Camp Jupiter, Octavian, met in The House of Hades.
- She said that Octavian was Apollo's son and not his descendant. Strangely, Octavian didn't correct her.
- She has a few similarities with Alex Fierro.