Annabeth Chase is a 12-17-year-old, the daughter of Athena and Fredrick Chase. She runs away from home when she is seven years old, encountering two other demigods, Luke Castellan and Thalia Grace. Her birthday is July 12. When Grover Underwood, the satyr, finds them, he tries to lead them back to Camp Half-Blood but makes a wrong turn into a Cyclops's lair. The Cyclops captures Luke, Thalia, and Grover. When Annabeth finds them, the Cyclops mimics Luke's voice. To the Cyclops's surprise, she stabs him in the foot. Then she frees Thalia, who takes it from there, saving Luke and Grover. When she gets to camp, on Half-Blood Hill, Thalia holds up an army of monsters for them (Grover, Luke, and Annabeth) to get away. Thalia eventually gets hurt and is dieing Zeus (Thalia's dad) takes pity on her and turns her into a pine tree to save her life. For five years she waits for her chance to lead a quest into the real world. She gets her chance when Percy Jackson comes along.