* Frederick Chase: A mortal architect, and Annabeth's biological father. He's portrayed as a loving and caring father, but he's unaware of Annabeth's true nature.
* Athena: The Greek goddess of wisdom, strategy, crafts, and warfare. She's Annabeth's divine mother, and she instilled in her daughter her intelligence, strategic thinking, and love for architecture.
While Annabeth is raised by her mortal father, she is aware of her divine heritage and has a close relationship with her mother, Athena.