Percy jackson and the lighting theif

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