I'm gonna be Percy Jackson when I grow up.

–Julia to Hazel Levesque, in The Son of Neptune

Julia is a six-year-old girl who assists Terminus, the Roman god of boundaries, at Camp Jupiter. She points for him and brings him things he can't reach, such as the weapon tray when Percy Jackson had to give up Riptide, because he has no arms. She also hands out things if necessary, such as party hats. She is a legacy of an unknown god.

The Heroes of Olympus

The Son of Neptune

When Percy, Hazel Levesque, and Frank Zhang are on their way to the Senate, who will decide what supplies they will be given for their Quest, they must cross the Pomerian Line into New Rome that Terminus guards with the help of Julia. Terminus stops Percy and tells him that he cannot carry his weapon past the border and calls for Julia, who is standing behind him. She hides from his gaze as Terminus can't turn around to look at her (being a statue), but she eventually shows herself. She holds out a small tray for Percy to place his pen in.


Terminus, Julia's boss.

Later after the battle with the Giant Army, she gives out party hats to people. When Percy arrives, she gives him a blue crown and she gives Hazel a gold pirate hat, telling her that she wants to be like Percy when she grows up. It was then that Percy noticed that her missing front two teeth were just starting to come in. When Frank meets them, she gives him a hat shaped like a polar bear.


Julia is a playful trickster, who likes to hide from Terminus under his statue base when he needs her.


Julia has pigtails, wears dresses, and has two missing teeth that are starting to come in. She is described as "impish looking".


  • In the first print of The Son of Neptune, Julia's name is misspelled as Juila.[1]
  • Julia is a legacy of an unknown god/goddess, as she has family in the city.
  • She likes to do cartwheels.


  1. The Son of Neptune, Chapter 13
The Heroes of Olympus
Core Series: The Lost Hero | The Son of Neptune | The Mark of Athena | The House of Hades | The Blood of Olympus
Main Characters: Jason Grace | Piper McLean | Leo Valdez | Percy Jackson | Frank Zhang | Hazel Levesque | Annabeth Chase | Reyna Avila Ramírez-Arellano | Nico di Angelo | Gleeson Hedge
Minor Characters: Rachel Elizabeth Dare | Thalia Grace | Octavian | Fleecy | Dakota | Ella | Tyson | Mrs. O'Leary | Arion | Hylla | Bob | Calypso | Lou Ellen Blackstone | Halcyon Green | Dr. Howard Claymore | Alabaster C. Torrington
Olympian Gods: Zeus | Hera | Poseidon | Hades | Ares | Demeter | Athena | Apollo | Artemis | Hephaestus | Aphrodite | Hermes | Dionysus
Minor Gods: Achelous | Aeolus | Asclepius | Boreas | Eurus | Hecate | Iris | Hypnos | Keto | Khione | Kymopoleia | Mithras | Nemesis | Nike | Notus | Phorcys | Serapis | Thanatos | Triptolemus | Zephyros
Roman Gods: Jupiter | Juno | Neptune | Pluto | Mars | Minerva | Ceres | Lupa | Bellona | Fortuna | Janus | Terminus | Vulcan | Mercury | Pomona | Aquilon | Hercules | Cupid | Auster | Favonius | Letus | Victoria | Orcus
Giants: Enceladus | Porphyrion | Alcyoneus | Polybotes | Ephialtes | Otis | Damasen | Clytius | Mimas | Orion | Hippolytus | Thoon | Periboia
Undead: Medea | Midas | Lityerses | Gray | Phineas | Otrera | Echo | Narcissus | Sciron | Pasiphaë
Primordial Gods: Gaea | Tartarus | Ourae | Nyx | Chaos | Ouranos | Akhlys | Erebos | Hemera | Elpis | Spes
Related Content: Rick Riordan | Percy Jackson and the Olympians | Demigods and Monsters | The Ultimate Guide | The Demigod Files | The Demigod Diaries | The Son of Sobek | The Singer of Apollo | The Staff of Serapis | Percy Jackson's Greek Gods | Percy Jackson's Greek Heroes | The Crown of Ptolemy | Demigods & Magicians | Demigods of Olympus | Percy Jackson Demigod Collection
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