Daughter of Mrs Athena and Frederick Chase.
She was born in San Francisco along with her two brothers but when she turned 12 her father and mother said they were moving to New York so that her mother could work at a new school that was currently in build.
She attended a very expensive Private Middle School and got top marks in all her subjects and when she left that school she went to Half-Blood High where her mother was working.
There she met Percy, who was transfering to that school and she instantly became friends with him, her feelings grew till she had a little crush on him but when he chose Reya, a recently new transfer student and one of their friends over her she went to pieces.
Soon after she grew calmer but she was still angry, her feelings for Percy didn't change.
Annabeth has curly golden blonde hair and is "like a princess", as Percy describes it. She is tall, fit, and athletic Her eyes have been described as an intense shade of grey, and always have a distracted look as if she were thinking of a million things at once. Annabeth looks like a typical California girl only with a natural tan. Annabeth is described as 'cute' 'pretty' and 'beautiful' many times by Percy.
She usually wheres the school uniform with the blazer buttoned up and she carries her bag with her everywhere.
She loves architecture, she spends her free time reading a book about all national landmarks and drawing designs for new buildings.
Annabeth can be very possessive of the people she loves. For example, she is very anxious of losing Percy to another girl like Reya.