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Usually, memories are lost for a good reason. They sink under the surface like dreams, and with a good sleep I can bring them back. But this...

–Clovis, to Jason Grace and Annabeth Chase about Jason’s lost memories in The Lost Hero.

Clovis is a Greek demigod son of Hypnos, and head counselor of Hypnos' Cabin.

The Heroes of Olympus

The Lost Hero

Annabeth Chase takes Jason Grace to Clovis to see if his memory can be restored. When they enter the cabin, Clovis warns Jason not to touch the water dripping from a poplar branch, as it is water from the River Lethe. One touch would cause him even more memory loss, wiping his mind completely clean.

When Annabeth explains Jason's memory loss, Clovis agrees to help. He makes Jason fall into a deep sleep to try and recover his memory. Clovis tells them that his memories may have sunk under the surface of his brain and that with a good sleep he could retrieve them. Once Jason wakes up, Clovis tells him that his memory wasn't suppressed, but a god or goddess has stolen his memories.

Clovis was present at the Camp's campfire, though he was sleeping most of the time.

During the council meeting, Butch Walker was trying to figure out how many colored pencils can fit in Clovis' nose while he was sleeping, but was reprimanded by Chiron.

The Blood of Olympus

While Nico is dreaming and attempting to reach Thalia Grace, he is interfered with by Clovis and the Hypnos' Cabin because they dream so powerfully. Nico tells Clovis to inform Thalia that one of Gaea's giants are after him and that he is bringing the Athena Parthenos over. Clovis shows Nico the war meeting that the cabin counselors had before Nico is awakened by Coach Hedge.


Clovis is sleepy all the time, or he is asleep. However, he is very knowledgeable about the gods, knowing that their forms are liquid, much like dreams, and having great insight to the gods themselves. Also, Clovis' breath smells like warm milk. He had been fumbling for hot chocolate when Nico met him in a dream, suggesting that he likes hot chocolate.


Clovis is described as looking like a baby cow. He has blond hair and a wedge-shaped head and a gentle, bovine face. He has thick features and a thick neck. His body is stocky but with spindly little arms, like he hasn't lifted up anything but a pillow. However, Nico described him as a potbellied guy with unruly blond hair. Drew also describes him as "pretty repulsive."


  • Hypnokinesis: As a son of Hypnos, he can control sleep and dreams.
    • He has the ability to astral project in his dreams and in a different form like the gods.
    • He can see people's memories, even though it failed with Jason, since his memory was taken by a god.
    • He and his cabin lull people to sleep.
    • Each of his siblings, including him, radiates individually a power that causes people to fall asleep, as when he yawned and Jason and Annabeth yawned after him.
    • He can do nearly anything involving sleep as his father is the god of sleep.
    • He can see the gods in his dreams, who always shift forms.
  • He has an extremely heavy sleep at times, to the point of once not even flinching when Jason strikes a lightning bolt next to him.


  • Clovis is an old French given name, the modern day variant being Louis.


  • His nostrils are capable of holding twenty colored pencils.
  • Clovis is the first demigod in either series that clarifies the difference between the Greek and Roman aspects of the Olympians. 
  • He has met Michael Jackson in his dreams and sang a duet with him.
  • He can yawn wide enough to swallow a minor god.
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