Esther

Esther is an old librarian at the Carter Center.

The Mark of Athena
Esther is a helpful librarian, who personally offers to drive Percy Jackson, Frank Zhang and Coach Hedge downtown. Percy is nervous about Esther, as he assumes she is a monster in disguise due to her kind attitude, but Coach Hegge assures him that Esther smells like a normal human, "with a hint of potpourri". She has a big black Cadillac, but due to her small size she can barely see over the steering wheel.

When Percy asks her if there is any salt water in Atlanta, she says there are whale sharks at the famous aquarium. She drops them off at the main entrance, and gives them her cell phone number in case of emergencies, money for a taxi ride back to the Carter Center and a jar of homemade peach preserve.