Frederick Chase

Dr. Frederick Chase is a mortal and the father of a demigod Annabeth Chase, also two mortals Bobby Chase and Matthew Chase.

History
When Frederick was young, he was a brilliant man who wanted to go to college, but he didn't have any money. His brilliance and wit drew the attention of Athena, the goddess of wisdom. She helped him get into college, and he finished his studies successfully.

Their relationship eventually ended on good terms, and Athena sent him their daughter, Annabeth. He was surprised that he had an infant daughter to care for, and tried to get Athena to take her back, but she sternly told him that demigods must be raised by their mortal parent.

Frederick then married a young Asian woman, and they had two sons: Robert and Matthew.

Dr. Chase's family was frequently attacked by monsters due to Annabeth being a Demigod. Annabeth eventually imagined that her mortal family resented her for this, and ran away, eventually running into Thalia and Luke. They had many adventures together until they met Grover Underwood, who took them to Camp Half-Blood. Thalia was slowly dying, but Zeus turned her spirit into a pine tree.

Annabeth eventually returned home, but left when she saw that nothing had changed. Her father then sent her his college ring in the hope that she would remember him by it and be convinced to come home. She started to wear his college ring on her necklace with the beads that she earns every year at Camp Half-Blood.

Percy convinced her to try again with her family, and she moved in with them again and settled down in New York City.

The Chase family then moved to San Francisco because they offered him a new job there. In The Titan's Curse, he shot down monsters in his plane, a Sopwith Camel. He took apart some of Annabeth's celestial bronze weapons and melted them into bullets.

Personality
Frederick Chase is a fairly normal mortal. However his genius caught the eye of Athena, who was enchanted by his wisdom. He most likely caught her attention by his fascination with wars and his love for airplanes. He loves Annabeth very much, though he did not want her at first, but that is somewhat expected. He didn't know that his friendship with Athena would result in a brain child, and when she came he did not have time to take care of her. Despite this, he has attempted to be on good terms with his daughter. When she ran away at six, he was heartbroken, until her return several years later. Percy once described Dr. Chase as an "excellent mad scientist" for his experiment of celestial bullets.

Appearance
Frederick is described as a middle-aged man with sandy-colored hair like his daughter Annabeth Chase, intense brown eyes. A handsome and athletic-looking man. He needs a shave.

Other
When the Sirens sang to Annabeth, she saw her father and her mother Athena together again, and happy. She saw Luke sitting next to them, patting the ground next to him, asking her to stay. Frederick is a professor at West Point and teaches American history.