<Li> Percy Jackson: Percy, a 14 - year - old demigod and son of Poseidon, is the protagonist as well as the series' narrator . He embarks on a journey to save Annabeth and the Greek goddess Artemis, who have both been kidnapped . </Li> <Li> Thalia Grace: Thalia is a 15 - year - old demigod daughter of Zeus . Though she appears in Percy's dream in the first book, she makes a full appearance at the end of The Sea of Monsters and is given a greater role in the third book . Thalia is described as looking very punk, with electric blue eyes, black clothes, and spiky hair . Her personality is often described as "independent and many times sarcastic ." Thalia is a lot like Percy and consequently, they often argue . She is heartbroken by Luke's betrayal, it is supposed that she had feelings for him . She is also afraid of heights, which she reluctantly admits to Percy, despite the fact that she is daughter of Zeus, God of the Sky . </Li> <Li> Annabeth Chase: Annabeth is a 14 - year - old demigod and the daughter of Athena . She is friends with Percy, Thalia and Grover . She is kidnapped along with Artemis by the Titans . She has a great passion and interest for architecture and she wishes to be an architect when she is older . Although she has a growing love interest in Percy, her feelings for Luke remain a problem between the two . Percy returns her feelings without realizing it, and is oblivious to how she feels about him . </Li> <Li> Grover Underwood: A large - hearted satyr whose favorite foods are aluminum cans and cheese enchiladas . He is 28 years old, yet has the appearance of a teenager due to the satyrs' slower growth rate (half that of humans). He wants to become a searcher for Pan, the satyr god of nature and the wild, who fell into a "deep sleep" due to the humans' pollution of the world . </Li>

When does the titan's curse take place