Julia Feingold is a Greek demigod daughter of Hermes.
Julia is at the campfire with the other demigods while Chiron was away. After Will Solace remarked that Nico di Angelo was scaring the campers, Julia muttered that he was doing it more than usual. She then watched the orientation film with the other campers.
Apollo first sees her with Alice on the steps of the Hermes' Cabin, giggling and whispering as Apollo passed. Apollo was embarassed and his face burned. Chiron later mentioned Julia and alice turned his fake legs into female legs, and muttered that they were watching Rocky Horror Picture Show again. Apollo asked if it was Travis and Connor Stoll, and Chiron said it was Julia and Alice who did it. He winced while thinking about them.
Julia sat with Connor, Alice, and Meg McCaffrey at dinner, and watched in amazement and horror as Meg ate hot dogs. Julia was presumably in on Sherman and Connor's prank on Meg, and laughed when she stood up. When Peaches appeared to defend Meg, Julia unsheathed her dagger and charged. But the Karpos disarmed her, sending her dagger skittering across the floor. Julia later bowed in respect with the other campers when Meg was claimed by Demeter.
The next day, Apollo found Julia talking to Alice while Meg was eating a cheeseburger and asked what they were talking about. Julia stepped back from Apollo as if he were a snake handler, which amused the god. Meg explained that Alice and Julia wanted to know their plans for the Three-Legged Death Race. Apollo tricked the girls by saying they hoped they wouldn't mind what he did to their shoes, making them shuffle nervously, even though he was bluffing. Julia and Alice glared at Apollo before starting the race. Later, Apollo thinks about Julia when wondering who the spy was. The girls also tried to find the Grove of Dodona by sitting on the lava wall with binoculars.
Julia fought in the battle to defeat the Colossus Neronis by throwing electric javelins at the statue's knees. Julia went on the Ares chariot with Alice and Sherman, but Nico convinced them to disembark and flew away with it. Julia, Alice, and Sherman then stumbled over to Apollo, covered with sand and oil. Julia was affected by the hay fever epidemic along with the others and was one of the first campers to punch Leo Valdez. She later sung at the ampitheater for a singalong.
She is seen making room for all the new unclaimed demigods at camp at cabin 11.
- Cunning: Julia is uncommonly cunning.
- Enhanced Theft Abilities: Julia is able to supernaturally steal things without people noticing, even other demigods.
- Clauditiskinesis:Julia can magically sense the internal structure and mechanisms of any lock she touches, and is able to make it unlock, even telekinetically. This does not work on cursed locks, though.
- Lock Intuition: Julia can also identify curses and traps placed on locks. If she concentrates hard enough, she can deactivate them.
- Money manipulation: Since Hermes is the god of merchants, Julia is presumably quite good with money.
- She and Alice are the first daughters of Hermes to appear in the franchise.
- She is the second known demigod or legacy of Jewish decent in the series, the first being her half- brother Cecil Markowitz.