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Leila is a Roman demigod daughter of Ceres, centurion of the Fourth Cohort and an old comrade of Jason Grace. She reluctantly fought in the Second Demigod Civil War, led by Octavian, centurion of the First Cohort, as well as Praetor Reyna Ramírez-Arellano.


Ceres, her mother

Little is known about Leila's past. It can be inferred that she was trained at the Wolf House by the wolf goddess Lupa just like most other Roman demigods did. At some point, she made her way south toward Camp Jupiter and was accepted into the legion by the augur.

It is unknown how long Leila has been a member of Camp Jupiter or even if she took part in the Second Titan War. However, when Jason Grace sees her in a vision, he refers to her as an old comrade. It is also unknown if she fought in the Attack on Camp Jupiter, alongside Reyna Ramírez-Arellano and the new recruit Percy Jackson, as she is never mentioned by name but it can be inferred that she did.

The Heroes of Olympus

The House of Hades

After confronting the pirate Sciron, Jason fell into unconscious mid-air, dreaming about the Roman's gathering in New York before their planned attack on Camp Half-Blood. Jason recognized Leila among his old comrades, which also included Dakota, Nathan, and Marcus.

Leila was present when Rachel Dare arrived with Grover Underwood, as ambassadors from Camp Half-Blood. Rachel provided Reyna with a message from Annabeth Chase. Upon this, Reyna departed for Greece, reluctantly leaving Octavian in charge. As soon as Reyna was out of earshot, Octavian told Leila and the others that there were going to be some changes in the legion's plans.

The Blood of Olympus

Leila arrives with Dakota and Mike Kahale to arrest Reyna and Nico for treason. However, before they can, Octavian arrives to see what was taking so long. But it is really Tyson and Ella who knocked out the son of Venus and were about to knock out the other two when they stated their loyalty to Reyna. She went with Dakota and Nico to the front with an unconscious Kahale. They were driven by Jules-Albert to the Roman base camp where she and Dakota tried to get there cohorts to back Reyna, before they can the Greeks are discovered trying to tamper with the onagers. After Reyna returns the Athena Parthenon and Gaia awakens, she along with the her, the second, and third cohorts are trapped waist deep in the earth with some of the monsters. The Fifth and First cohorts along with the Greeks come to their aid.

The Trials of Apollo

The Tyrant's Tomb

During the second wave of Caligula's Assault on Camp Jupiter, she points Apollo and Meg McCaffrey to Hazel Levesque.

She survives the battle and explains to her Greek half-sister that she has been given ancient and mysterious seeds.


Reyna describes Leila as "quite levelheaded". She isn't known to be aggressive.


  • Chlorokinesis: As the daughter of Ceres, she has absolute control over plants. 


  • Leila is a variant of the Arabic name meaning "night".
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 Ramírez-Arellano | Nico di Angelo | Gleeson Hedge
Secondary Characters: Hylla Ramírez-Arellano | Dakota | Tyson | Ella | Octavian | Halcyon Green | Dr. Howard Claymore | Alabaster C. Torrington | Lamia | Iapetus/Bob
Minor Characters: Rachel Elizabeth Dare | Grover Underwood | Thalia Grace | Fleecy | Mrs. O'Leary | Kinzie | Arion | Calypso | Lou Ellen Blackstone | Chiron | Will Solace | Tristan McLean | Don | Julia | Jacob | Michael Varus | Burly Black | Medea | Midas | Lityerses | Phineas | Otrera | Echo | Narcissus | Sciron | Pasiphaë
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 | Apollo (Roman) | Diana | Venus | Bacchus | Pomona | Aquilon | Hercules | Cupid | Auster | Favonius | Letus | Victoria
Giants: Enceladus | Porphyrion | Alcyoneus | Polybotes | Ephialtes | Otis | Damasen | Clytius | Mimas | Orion | Hippolytos| Thoon | Periboia
Undead: Gray
Primordial Gods: Gaea | Tartarus | Ourae | Nyx | Chaos | Ouranos | Akhlys | Hemera | Elpis | Spes
Monsters and Magical Creatures: Cynocephali | Gorgon | Gryphon | Harpy | Basilisk | Lycanthrope | Gegeines | Cyclops | Katobleps | Unicorn | Giant Eagle | Ichthyocentaur | Satyr/Faun | Storm Spirit | Laistrygonian Giant | Lares
Related Content: Rick Riordan | Haley Riordan | Percy Jackson and the Olympians | Percy Jackson and the Olympians: 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