Across
- 4. a grumbling, growling creature
- 6. a golden coin used for sending messages to other people
- 8. god of the sky
- 9. god of the underworld
- 12. an electrical bolt that comes from the sky
- 15. main villain
- 17. god of messages
- 19. a ballpoint pen that turns into a sword when you uncap it
- 20. Thalia got turned into it
Down
- 1. Percy's father
- 2. god of wine
- 3. a place underground
- 5. god of war
- 7. Annabeth's mother
- 10. a lightening bolt shaped stick that controls the sky
- 11. Percy's friend
- 13. god
- 14. satyr
- 16. main character
- 18. Grover plays them