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Oh, I like the way you think. They sent me because I excel at messing things up.

–Cecil to Nico di Angelo, in The Blood of Olympus.

Cecil Markowitz is a Greek demigod son of Hermes at Camp Half-Blood.

The Heroes of Olympus

The Blood of Olympus

Hermes, his father.

Cecil first appears when Nico di Angelo leaves the Romans Leila and Dakota, shadow traveling to the crest of Half-Blood Hill next to Thalia's Pine Tree where Will Solace, Lou Ellen, and Cecil where scouting the enemy. Nico at first does not see Cecil and the others as he is focused on studying the Romans following Octavian when Will makes their presence known. Nico does not recognize Cecil or Lou Ellen until Will introduces him as a demigod from the Hermes cabin. As Nico argues with Will about using his powers, it is noted that both Cecil and Lou Ellen look back and forth between the two as if "they were watching a really intense tennis match." Cecil states that he brought some Greek fire, but Nico vetoes his idea and instead asks Cecil if the son of Hermes could re-calibrate the aim of the onagers toward the other firing lines. Cecil grins at this and comments that that's why they sent him there because he's great at messing things up. Cecil works on each onager while the other demigods guard him in case any Romans suspect or notice anything over the Mist from Lou's magic. While heading toward the third machine, they are noticed and Nico uses his powers to bring up skeleton warriors to fight the Romans. Cecil joins in this fight while Will fusses over Nico. After the small fight, Cecil comes back limping, looking like he had pulled a muscle and points out to the two arguing demigod that they had missed the fight. During all the bickering, the Romans, Octavian, and the cynocephali came up. After Reyna brings the Athena Parthenos back to the Greeks and Gaea awakening, he presumably fought monsters and helped free the Romans.

The Trials of Apollo

The Hidden Oracle

Cecil is one of the campers to vanish when the Grove of Dodona was threatened by Nero. He was eventually freed by Austin Lake and when he, Apollo and the other captives flew back to camp on female Myrmekes and distracted Nero's automation.

Camp Half-Blood Confidential


  • Enhanced Theft Abilities: As a son of Hermes, Cecil is able to supernaturally steal things without people noticing, even other demigods.
  • Clauditiskinesis: Cecil can magically sense the internal structure and mechanisms of any lock he touches, and is able to make it unlock, even telekinetically. This does not work on cursed locks, though.
    • Lock Intuition: Cecil can also identify curses and traps placed on locks. If he concentrates hard enough, he can deactivate them.
  • Chrimatakinesis: Since Hermes is the god of merchants, Cecil is presumably quite good with money.
  • Expert Saboteur: Cecil is an expert at sabotaging things which is why he was chosen for the scouting mission to sabotage Octavian's onagers. Cecil was able to recalibrate three of the weapons in such a way that their firing trajectories intersected with the other three onagers and it was done so well that Octavian's men weren't able to detect the sabotage when they checked for any.


  • Cecil is the first known demigod or legacy of Jewish decent.
  • Cecil can cook.
The Trials of Apollo
Core Series: The Hidden Oracle | The Dark Prophecy | The Burning Maze | The Tyrant's Tomb | The Tower of Nero
Main Characters: Apollo/Lester Papadopolous | Meg McCaffrey | Peaches | Leo Valdez | Calypso | Grover Underwood | Piper McLean | Jason Grace | Reyna Ramírez-Arellano | Frank Zhang | Hazel Levesque | Nico di Angelo | Will Solace | Rachel Elizabeth Dare
Secondary Characters: Percy Jackson | Chiron | Austin Lake | Kayla Knowles | Hemithea | Josephine | Georgina | Lityerses | Trophonius | Gleeson Hedge | Mellie | Chuck Hedge | Medea | Herophile | Crest | Lavinia Asimov | Don | Tyson | Ella | Tarquin | Luguselwa | Claudia | Janice | Blaise
Minor Characters: Sally Jackson | Thalia Grace | Mrs. O'Leary | Festus | Cade | Mikey | Harley | Connor Stoll | Miranda Gardiner | Cecil Markowitz | Ellis Wakefield | Sherman Yang | Damien White | Malcolm Pace | Paolo Montes | Valentina Diaz | Germani | Agamethus | Olujime | Phillip McCaffrey | Hunter Kowalski | Sssssarah | Prickly Pear | Aloe Vera | Joshua | Naevius Sutorius Macro | Incitatus | Tristan McLean | Bombilo | Aurum | Argentum | Julia | Jacob | Poison Oak | Screech-Bling | Annabeth Chase | Elon | Mamurius Veturius | Mimi
Olympian Gods (Greek & Roman): Zeus/Jupiter | Hera/Juno | Poseidon/Neptune | Demeter/Ceres | Ares/Mars | Athena/Minerva | Apollo/Apollo (Roman) | Artemis/Diana | Hephaestus/Vulcan | Aphrodite/Venus | Hermes/Mercury | Dionysus/Bacchus | Hades/Pluto
Minor Gods: Nero | Commodus | Caligula | Iris | Britomartis | Styx | Terminus | Lupa | Terpsichore | Harpocrates | Cardea
Titans: Rhea | Leto | Mnemosyne | Helios
Monsters and Magical Creatures: Python | Nosoi | Karpoi | Palikos | Myrmekes | Colossus Neronis | Blemmyae | Gryphon | Carthaginian Serpent | Scythian Dracaena | Cynocephali | Centaur | Cyclops | Yale | Satyr/Faun | Strix | Dryad | Dragon | Pandai | Eurynomos | Skeleton Warriors | Zombie | Raven | Amphisbaena | Troglodyte | Tauri Sylvestres
Related Content: Rick Riordan | Percy Jackson and the Olympians | The Heroes of Olympus | Demigods & Magicians | Camp Half-Blood Confidential | Camp Jupiter Classified: A Probatio's Journal | Percy Jackson Demigod Collection | Un Natale Mezzosangue