Across
- 3. Monster who attacks Percy and his mother at the beginning of the book.
- 6. God of the Underworld and one of the Big Three.
- 7. Percy's camp counsellor who is also the son of Hermes.
- 8. Percy's best friend who he met at school.
- 9. God of wine and camp director of Camp Half Blood (also known as Mr. D)
Down
- 1. Daughter of Athena who volunteers to go on a quest with Percy.
- 2. Half-human, half-goat creature (Grover is one).
- 4. Percy's former Latin teacher who is called Mr. Brunner at school.
- 5. Half-human, half-horse creature (Chiron is one).