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Which fatal illness shall I use to kill the great Apolloooo? Anthrax? Perhaps eboooola…

–Nosoi, in The Hidden Oracle.

The Nosoi (Singular "Nosos") are the spirits of illness, plague, and disease. They were one of the many evils locked inside Pandora's Pithos. They are sometimes likened to the Keres. Their Roman equivalent are the Morbi.

Nosoi

Nosoi

The Trials of Apollo[]

The Hidden Oracle[]

Several Nosoi were following Meg McCaffrey and Apollo, as they were on their way to see the demigod Percy Jackson. Meg described them as "shiny blobs".

On their way to Camp Half-Blood, Apollo, Meg, and Percy were attacked by the three Nosoi, and one of them manages to infect Apollo. They are weakened by Meg, who used her demigod powers, and later finished off by her friendly KarposPeaches.

Appearance[]

The Nosoi, in their basic form, were described as vaguely humanoid apparitions. Their bodies are made of glimmering smoke, which renders them invulnerable to any weaponry, even ones made from blessed metals such as Riptide. They can change their form into semi-corporeal; resembling ghoulish corpses with yellow eyes, dressed in destroyed clothes, and covered in festering wounds. Any sort of attack will simply pass through them.

Abilities[]

The Nosoi are embodiment of fatal diseases. When they are in their smoke form, they can infect people by making them inhale the vapours of their bodies.

Spirits
Enemy Spirits Arai | Aurae | Eidolons | Karpoi | Keres | Nosoi | Makhai | Mania | Venti
Friendly Spirits Nereids | Dryads | Lares | Naiad | Nebulae
Neutral Spirits Maenad
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 | Percy Jackson | Peaches | Leo Valdez | Calypso | Grover Underwood | Piper McLean | Jason Grace | Reyna Ramírez-Arellano | Frank Zhang | Hazel Levesque | Lavinia Asimov | Nico di Angelo | Will Solace | Rachel Elizabeth Dare
Secondary Characters: Chiron | Austin Lake | Kayla Knowles | Hemithea | Josephine | Georgina | Lityerses | Trophonius | Gleeson Hedge | Mellie | Chuck Hedge | Medea | Herophile | Crest | 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 | Dakota | 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 | Karpos | Palikos | Myrmekes | Colossus Neronis | Blemmyae | Gryphon | Carthaginian Serpent | Scythian Dracaena | Cynocephali | Centaur | Cyclops | Yale | Satyr/Faun | Strix | Dryad | Dragon | Pandai | Eurynomos | Skeleton Warriors | Vrykolakai | Khromandae | 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 | The Sun and the Star: A Nico di Angelo Adventure
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