The Last Olympian

Annabeth Chase is Athena’s daughter and fellow member of Camp Half-Blood. Throughout the novel, there is romantic tension between her and Percy, though the two have never clearly expressed their true feelings. Percy notes of her: “Most of the time we couldn’t get through a conversation without trying to strangle each other. Still, just seeing her made me feel fuzzy in the head” (46).

Annabeth aspires to be an architect, and she presents several pieces of magical technology throughout the novel that help in the war efforts. For example, she utilizes a magical shield in which “you can literally see any target under the sun or moon” (165). She and Percy fight side by side in many of the battles. While Percy is fighting Kronos and Ethan Nakamura, Annabeth throws herself in front of Ethan’s sword to protect the small of Percy’s back, the one place where he is vulnerable.

Annabeth’s actions are also crucial in ensuring victory because she is the one who connects with Luke’s spirit in Kronos’s body while Kronos is fighting Percy: “Annabeth saved Olympus […] She convinced Luke to stop Kronos” (343). Here, she connects to their shared history and their family of choice, relating back to the novel’s theme of interconnectivity. By the end of the novel, Annabeth has made many strides towards self-actualization. She has fought as a warrior, used her skills in design and architecture, and expressed her true feelings for Percy.

Nico di Angelo is the 12-year-old son of Poseidon and member of Camp Half-Blood. Although he was born many years ago, he and his sister Bianca were frozen in ice before being freed by a Fury. He is reserved and not very popular at camp, and Percy notes: “I’d never get used to the fact that this twelve-year-old kid spent more time talking with the dead than the living” (85). Nico is instrumental in aiding the Olympians’ efforts. To help Percy, he takes him to the Underworld where Percy bathes in the River Styx. Nico also convinces Hades, a lesser god, to aid in the war efforts. 

Grover Underwood is a satyr and Percy’s best friend. At the beginning of the novel, he has been missing for two months because Morpheus has put him into a deep sleep in Central Park. When Percy wakes him, Grover joins in on the war efforts. Grover is deeply connected to nature: “Since Pan’s death, I can feel when something is wrong in nature” (113). At the end of the novel, Grover takes on the task of locating the other demigods in the world and bringing them to Camp Half-Blood. 

Rachel Dare is a mortal who can see through the Mist. She comes from a wealthy family and has developed a romantic relationship with Percy. She has prophetic dreams and is able to see into the future. While Percy is fighting, Rachel travels to Manhattan to reveal to him that he is not the hero in the Prophecy. After the war ends, Rachel visits Camp Half-Blood and becomes the new Oracle of Delphi. She tells Percy that they cannot pursue each other romantically, and of the Camp she says, “This is where I belong, Percy. I finally understand why” (365).

Kronos is Titan god of time and father of Zeus. He is leading the efforts against the gods of Mount Olympus. In order to further his mission, he has taken over the body of Luke Castellan who has been rendered invulnerable in the River Styx. Occasionally, Luke’s spirit breaks through Kronos’s consciousness. At the end of the novel, Luke’s spirit prevails and kills Kronos. Hermes notes that even though Kronos is now defeated, he can never truly die.  

Luke Castellan is the son of Hermes and May Castellan. Although she is mortal, May has the gift of sight. After being cursed by Hades, May loses touch with reality, and Luke has a difficult childhood. He runs away from home and forms a band with Thalia Grace and Annabeth Chase. It seems as if he has betrayed the demigods by siding with Kronos. However, his final act of killing Kronos shows a different story: “By sacrificing himself, he had saved Olympus” (340). Luke is remembered as a hero, and he is the one who ultimately fulfills the Great Prophecy. 

Chiron is a centaur who is the assistant director of Camp Half-Blood. He becomes Percy’s mentor: “I am your trainer, your teacher. That is not the same as being your leader” (144). He provides Percy with guidance and advice but does not venture into the Empire State Building. Chiron helps the war efforts and is injured but survives. At the end of the novel, he invites Rachel to the Camp to assume the role of Oracle.  

Ethan Nakamura is the son of the lesser god Nemesis and fights on the side of Kronos. He sides with the Titans because on Olympus, “[t]here is no throne to Nemesis […] no throne to [his] mother” (327). However, during the final battle, Percy convinces Ethan to side with the Olympians. Ethan is defeated by Kronos and given a warrior’s funeral at Camp Half-Blood. 

May Castellan is Luke’s mortal mother. She explains that she's “been given the gift of sight for a reason”(238) and attempts to take on the role of Oracle at Camp Half-Blood. Due to Hades’s curse, she loses her mind and never regains full control of her thoughts. 

Clarisse La Rue is Ares’s daughter who initially refuses to join in the war efforts. However, she saves the day when she arrives and slays the drakon: “Even without her armor or spear, she was a demon” (298). She is Silena Beauregard’s best friend and does not reveal that she was a spy at the end. 

Silena Beauregard is the daughter of Aphrodite and Charles Beckendorf’s girlfriend. Unbeknownst to others, Silena has been supplying information to Kronos because Luke had previously enlisted her efforts. However, she rejects the side of the Titans at the end and arrives to fight with the Olympians, ultimately sacrificing her life. 

Thalia Grace is an immortal daughter of Zeus. She leads the Hunters of Artemis and comes to the demigods’ aid as they fight Kronos. Years ago, she banded together with Luke and Annabeth and has a bond with them.  

Charles Beckendorf is a son of Hephaestus and senior camp counselor. He dies in his efforts to blow up Kronos’s ship in the first chapter of the novel. Everyone at camp is distraught by his death, especially his girlfriend, Silena. 

Hades is a lesser god of the Underworld. He at first tries to imprison Percy in order to have his son Nico fulfill the Prophecy. After Percy escapes, Nico convinces Hades to fight against the Titans. 

Hermes is the Olympian messenger god and father of Luke. He has known about the Prophecy and allowed Luke to live his life and fulfill it. At the end of the novel, he promises to connect with his other children. 

Hermes is the Olympian messenger god and father of Luke. He has known about the Prophecy and allowed Luke to live his life and fulfill it. At the end of the novel, he promises to connect with his other children.