<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> <Li> Bianca di Angelo: Bianca is a 12 - year - old demigod and the daughter of Hades . She and her ten - year - old brother Nico were trapped in the Lotus Casino, where time is slowed down, but in the beginning of the book, they were released and attended quest in the "Junkyard of the Gods". </Li>

What is the prophecy in the titan's curse