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20 chapters - View chapters
| Name | Aliases | Role |
|---|---|---|
Annabeth Chase A daughter of Athena and Percy's closest companion and eventual partner. Brilliant, driven, and deeply competitive, she has been training at Camp Half-Blood since she was seven. Her fatal flaw is hubris - she believes she can do anything. Her arc through the series is about learning that intelligence alone is not enough and that asking for help is not weakness. | Wise Girl, Daughter of Athena | Protagonist |
Percy Jackson A son of Poseidon who discovers his divine heritage at age twelve when monsters begin attacking him. Over five books he grows from a confused kid who can breathe underwater into the demigod at the centre of the Great Prophecy. His fatal flaw is excessive personal loyalty - he would risk the world to save the people he loves. Continues as a major character through Heroes of Olympus and appears in later series. | Seaweed Brain, The Son of Poseidon | Protagonist |
Luke Castellan A son of Hermes and the primary antagonist of the original Percy Jackson series. His resentment of the gods who ignore and exploit their demigod children makes him the vector for Kronos's return. His arc ends with a redemption that the story earns. | Son of Hermes | Antagonist |
Grover Underwood A satyr and Percy's best friend, assigned to protect him before either of them understood what Percy was. Deeply anxious and deeply loyal, Grover's great ambition is to find the lost god Pan. His empathy link with Percy becomes a recurring plot device across the series. | G-Man | Major |
Thalia Grace A daughter of Zeus who was transformed into a pine tree to save her life and restored as a teenager. Her existence violates the oath of the Big Three. Eventually joins the Hunters of Artemis to avoid the Great Prophecy falling to her. Jason Grace's elder sister. | Daughter of Zeus, Lieutenant of Artemis | Major |
| Major |
| Name | Type |
|---|---|
| Camp Half-Blood | Organisation |
| Crew of the Argo II | Organisation |
| The Seven | Organisation |
| Date | Event | Details |
|---|---|---|
1 April 2006 | Publication | Generally well received on publication, with trade reviewers noting it as a stronger follow-up to The Lightning Thief. Publishers Weekly called it "a sequel stronger than his compelling debut," while School Library Journal praised Percy as "an appealing kid" whose chilling prophecy would resonate with readers. Child magazine described it as "outstanding" and predicted it would win over new fans. Common Sense Media called the series "pure fun, with the author doing nearly everything right." It was nominated for the 2006 Book Sense Top Ten Summer Pick and the 2009 Mark Twain Award, and sold over one million copies. Fantasy Book Review singled out the action and pacing as improvements on the first book. |
Generally well received on publication, with trade reviewers noting it as a stronger follow-up to The Lightning Thief. Publishers Weekly called it "a sequel stronger than his compelling debut," while School Library Journal praised Percy as "an appealing kid" whose chilling prophecy would resonate with readers. Child magazine described it as "outstanding" and predicted it would win over new fans. Common Sense Media called the series "pure fun, with the author doing nearly everything right." It was nominated for the 2006 Book Sense Top Ten Summer Pick and the 2009 Mark Twain Award, and sold over one million copies. Fantasy Book Review singled out the action and pacing as improvements on the first book.