She was considered a "brainchild" like all other children of Athena, which means that they were born from the thoughts of the goddess.Annabeth appeared on Frederick's doorstep in a golden cradle carried down from Olympus by Zephyros, the West Wind. She is the head counselor of Athena's cabin and the architect of Olympus. I think that's why I want to be an architect." Annabeth Chase is a seventeen-year-old Greek demigod, the daughter of the wisdom goddess Athena and history professor Frederick Chase, and the maternal cousin of Norse demigod Magnus Chase.Together, they were on the run, fighting monsters and making hideouts on the East coast, (like the one Percy Jackson, herself and Tyson later used in Jamestown, Virginia).They also ran into Zoë Nightshade and the Hunters of Artemis, who tried recruiting Thalia among their ranks, but she refused in favor of remaining with Luke and Annabeth. Source: Clifford Grammich, Kirk Hadaway, Richard Houseal, Dale E.
After removing the sheet of iron, Annabeth ran toward Luke with a hammer and almost brained him with it, thinking he was a monster.In the end, he had no choice but to reluctantly take her in and care for her as well as he could.Annabeth took the last name of her mortal parent (which is her father, in her case).As revealed in The Sword of Summer, when Annabeth was seven years old (shortly before she ran away from home), she had visited her uncle Randolph at his mansion during Thanksgiving and played with her then five or six-year-old cousin Magnus, while Fredrick argued with Randolph and her aunt Natalie.
This argument created a rift in the family that caused the separation between Annabeth, Magnus, Randolph, and Natalie for many years.However, her father asked Athena to take Annabeth back to Olympus and raise her there, as he didn't see Annabeth as a gift the way Athena did as she didn't know their friendship would result in a child and wasn't prepared to take care of her.