Across
- 8. The god of thunder and king of Olympus
- 10. The tree that protects Camp Half-Blood’s borders
- 12. The entrance to the Underworld located in Los Angeles
- 14. The father of all monsters in Greek mythology
- 15. Percy’s best friend who is a satyr
Down
- 1. The god of the sea and Percy’s father
- 2. A metal that can harm gods and monsters
- 3. The daughter of Athena who helps Percy on his quest
- 4. The three-headed dog guarding the entrance to the Underworld
- 5. The three sisters who share one eye among them
- 6. The place where half-bloods are trained to fight monsters
- 7. The weapon that Percy uses in battles
- 9. The protagonist of the story who discovers he is a demigod
- 11. The evil titan lord who seeks revenge on the gods
- 13. The winged horse that Percy befriends