Percy is the son of Poseidon, Thalia is the daughter of Zeus, and Annabeth is the daughter of Athena. In other words, they're all children of gods, or demigods.
she is the same age as Percy and Annabeth
The Goddess Artemis is kidnapped and Annabeth is missing. So its up to Zoe, Thalia, Grover, Bianca and Percy to find and save them.
Thalia, Percy, Annabeth and Grover
he's in his mom's car with Annabeth and Thalia
It never says what Annabeth's age is in the Titan's Curse. However she was thirteen in the Sea of Monsters, the second book of the Percy Jackson series. That should make her fourteen in the Titan's Curse.
Maincharacters throughout the whole series are Percy Jackson Annabeth Chase and Grover Underwood as well as the twelve Olympians and camp director Chiron. Characters introduced in this book are Zoe Nightshade Nico Di Angelo and Bianca Di Angelo. Thalia Grace was motioned in previous book in the series but is more present in The Titans curse. Silena Beauregard makes her first appearance in this book but is not important until The Last Olympian and The Demigod Files.
There is Percy, Annabeth, Grover, Thalia, Bianca, Artemis, Atlas, and Kronos.
Actually, a lot of people say that no one knows who plays Thalia Grace, daughter of Zeus, but actually they're casting Sara Paxton.
It's about how Thalia is now a new character and how they get two new kids that are half bloods. Then it is about, well, The Titans curse. The titan is Kronos.
Percy Jackson, Thalia Grace, Nico Di Angelo, Bianca Di Angelo, Grover Underwood, Zoe Nightshade and Annabeth Chase are the main characters in the Titan's Curse. I don't know who would be the second main character, depending on Percy's dreams about Annabeth would place her as second. But Thalia is there on the quest with Percy, and she helped defeat the Nemean Lion.
Yes, She Does In The Titans curse in the chapter " The Gods Vote How To Kill Us." It seems that Percy talks to Athena more than Annabeth does though.
Grover Underwood and Annabeth Chase are his two best friends.