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Mark is a Greek demigod son of Ares.

Percy Jackson and the Olympians

The Demigod Files

The Stolen Chariot

When Clarisse mentions that her brothers are messing with her, Percy instantly thinks of Mark and Sherman Yang, her brothers from Camp Half-Blood. This means they are possibly the most troublesome out of her siblings.

The Last Olympian

Mark may have been one of the Ares campers that was convinced by a disguised Silena Beauregard as Clarisse to join the rest of the campers in New York City in the battle against Kronos and his monsters. Only later did they realized that it was Silena and not Clarisse.


Ares, his father

  • ADHD: Like most demigods, he possesses inborn supernatural battle reflexes and senses that he uses to analyze the fighting style of his opponent.
  • Fighting Skills: He is quite skilled with weapons.
  • Dyslexia: His brain is hard-wired for reading Ancient Greek instead of modern languages.

Demigod Abilities

  • Physically Enhanced: As a son he Ares, he is very strong and swift.
  • Warfare: He may have some small degree of powers that Ares himself possesses.
  • Telumkinesis: Being a child of Ares would make him an expert in all weapon usage and may even have some degree of magical control over them.
  • Necromancy (limited): As son of Ares, he can summon the losing soldiers in any war.


  • The name Mark is derived from Mars, the Roman form of Mark's father, Ares.
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) | Sea of Monsters (film) | The Demigod Files | Demigods and Monsters | The Ultimate Guide | The Heroes of Olympus