Annabeth, after wandering around, found where he was keeping Thalia, Luke and Grover. The Cyclops tried to lure Annabeth to him by imitating her dad's voice, but instead of going to the voice and getting captured as well, she stabbed it hard on the foot and untied Thalia, who then took care of everything else.That explained why Annabeth didn't trust Tyson (who thinks she is very pretty).He is Percy's half-brother and evidently, is a Cyclops.Though later in life Annabeth starts to trust Tyson and they become good friends.Annabeth felt that her step-mom thought that she was a freak, so she ran away from home at age seven because she believed that she was not wanted at home.She then fought monsters with the guidance of her mother, Athena, for a few months, using only a mortal hammer.This tree became a barrier for the camp against monsters and mortals unless they were invited over the barrier by someone from inside the camp.When Annabeth was 10 years old, she heard the Great Prophecy. Every time a new camper came to Camp Half-Blood, Annabeth wondered if they were "the one", because Chiron told her that she would have a part to play in the Great Prophecy.
Together, they were on the run, fighting monsters and making hideouts on the East coast, like the one Percy, Annabeth, and Tyson used in Jamestown, Virginia.Annabeth first appears in The Lightning Thief at age twelve.She initially was nicknamed "Wise Girl" and she sometimes calls Percy "Seaweed Brain" instead of his actual name.Her father asked Athena to take Annabeth to Olympus and raise her there but Athena told him that heroes were raised by their mortal parents, and not their godly parent, so he had no choice but to take her in and care for her as well as he could; however, he failed. He and his wife had two kids together, Matthew and Bobby, who Percy meets in The Titan's Curse.Because Annabeth was a demigod, her family was constantly being attacked by monsters, causing constant fighting between Annabeth and her parents, as they felt that she was always putting them in danger.After removing the sheet of iron, Annabeth ran toward Luke with a hammer and almost hit him with it, thinking he was a monster.Upon finding that Annabeth was a demigod, Luke and Thalia agreed that she could run away with them and Luke promised that he wouldn't let anything hurt her and they would become a better family than her old family, but later in the series, Luke betrays her because Kronos was controlling him.It is unknown whether she actually fought the monsters or not, but she most likely fought them and was mortally wounded.Zeus, feeling sorry for his daughter, saved her life by turning her into a pine tree, later renamed Thalia's Pine Tree.Annabeth was later found by Luke Castellanand Thalia Grace.When they found her, Annabeth hid behind a piece of metal, and then tried to attack them with her hammer, but Luke knocked it out of her hand.