Across
- 5. Son of Hermes and the main antagonist
- 7. Daughter of Ares
- 8. Goddess of Wisdom
- 10. God of the Sea
- 13. Daughter of Athena
- 16. Centaur and Activities director at Camp Half-Blood
- 18. Son of Hades
- 19. God of the Underworld
- 20. Titan antagonist
- 21. Host of the Spirit of the Oracle of Delphi
Down
- 1. God of the Sky
- 2. Daughter of Zeus
- 3. Son of Poseidon and main protagonist
- 4. Goddess of Marriage
- 6. The lieutenant of the Hunters of Artemis and a daughter of the Titan Atlas
- 9. God of Fire and Blacksmiths
- 11. Goddess of Love
- 12. Satyr and Percy's best friend
- 14. Percy's Cyclops Half Brother
- 15. Son of Hephaestus
- 17. Older sister of Nico and a Hunter of Artemis
- 22. God of War