Besides, I love terror. I live on terror!

–Deimos to Percy Jackson, in The Stolen Chariot

Deimos is the Greek god of terror and the son of Ares and Aphrodite. He and his twin brother, Phobos, were responsible for stealing Ares' chariot from Clarisse in The Demigod Files. In ancient myths, he accompanied Ares in his war chariot together with his brother Phobos.  His Roman counterpart is Metus.

Percy Jackson and the Olympians

The Demigod Files

The Stolen Chariot

Angry that their half-sister Clarisse La Rue was allowed to drive Ares' War Chariot, their usual job (also it's traditionally only sons of Ares that are allowed), Phobos and Deimos decided to steal the chariot from her in Percy Jackson and the Stolen Chariot.


Ares, his father.

They then hid it in the Staten Island Zoo and used it as bait for their sister and Percy Jackson. Phobos fought Percy but was defeated and disappeared. Deimos changed his appearance to match Ares in order to scare Clarisse. He too disappeared, after Clarisse overcame her fear. 

The Heroes of Olympus

The Blood of Olympus

While underground in Phobos's and Deimos's temple, Piper McLean and Annabeth Chase fight the giant Mimas. Piper sacrifices her cornucopia to her brothers. After Mimas's defeat, the face of Deimos on the wall falls onto the giant, killing him. As only a god and demigod together can kill a giant, presumably Deimos caused this to happen to kill Mimas. Then Piper thanks her brothers, and requests a way out of the cave. Phobos opens up a tunnel for them to get back to the surface along his twin.


Deimos is described as a muscular teenage boy, dressed in jeans, a black shirt, and a leather jacket and a brutal face covered with scars. He is known to be more aggressive than his brother, Phobos.


  • Deimos has the standard powers of a god
  • Terror Generation: Deimos has the ability to bring terror to a large crowd. In The Demigod Files, he brings a large sea monster that scares many mortals.
  • Odikinesis: Being a son of Ares, Deimos can possibly control the feelings and emotions of war.
  • Statue Manipulation: In The Blood of Olympus, Deimos was apparently able to bring a statue of himself down upon Mimas without seeming to be physically present.
  • Poor Swordsmanship: Despite being a son of Ares, Deimos is a terrible swordsman, being that he never needed to use sword fighting skills, due to him always relying on his terror-bringing ability.




Aphrodite, his mother.

  • Deimos, the smaller of the two moons of Mars, is named after this deity.
  • He is often paired with his brother, Phobos. And together they create fear and terror.
  • When questioned about the difference between the two it was stated Phobos typically acts on one person at a time and makes it more personal and specific while Deimos acts on a larger scale, such as whole crowds.
  • In spite of being the son of the god of war, Deimos is a terrible physical combatant. 
  • Their names and duties are sometimes used interchangeably.
  • His Roman counterpart is Metus or Formido.
  • Both the twin brothers are mentioned in the Iliad, Shield of Hercules, Theogony, Seven against Thebes, Fall of Troy and many other Greek mythology books.
  • He and Phobos always attend to their father, Ares, on the battlefield.
  • His alternate name is Deimus.
  • Despite their cold behavior towards their paternal half-sister Clarisse, Deimos and his twin are not all that bad, as they accepted their maternal half-sister Piper's request for help.
Percy Jackson and the Olympians
Core Series: The Lightning Thief | The Sea of Monsters | The Titan's Curse | The Battle of the Labyrinth | The Last Olympian
Main Characters: Percy Jackson | Grover Underwood | Annabeth Chase | Tyson | Clarisse La Rue | Thalia Grace | Nico di Angelo | Chiron | Luke Castellan | Rachel Elizabeth Dare
Minor Characters: Travis Stoll | Connor Stoll | Mrs. O'Leary | Silena Beauregard | Charles Beckendorf | Sally Jackson | Paul Blofis | Blackjack | Zoë Nightshade | Bianca di Angelo | Juniper | Michael Yew | Ethan Nakamura
Olympian Gods: Zeus | Hera | Poseidon | Demeter | Ares | Athena | Apollo | Artemis | Hephaestus | Aphrodite | Hermes | Dionysus | Hades | Hestia
Minor Gods: Amphitrite | Ariadne | Hecate | Iris | Janus | Morpheus | Nemesis | Pan | Persephone | Triton
Titans: Kronos | Atlas | Calypso | Iapetus | Krios | Hyperion | Oceanus | Prometheus
Related Content: Rick Riordan | The Lightning Thief (film) | The Sea of Monster (film) | The Demigod Files | Demigods and Monsters | The Ultimate Guide | The Heroes of Olympus
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