Across
- 2. Percy's biological father.
- 3. Cabin counselor and sword-fighting trainer. Son of Hermes.
- 6. Fury disguised as a math teacher who attacks Percy.
- 7. The spirit of the sea who guides Percy on his quest to save the world.
- 8. A terrifying monster who is half bull and half man.
- 11. Daughter of Zeus turned into a tree.
- 14. A satyr and keeper in charge of protecting Percy in order to obtain his searcher license.
- 15. A monstrous creature disguised as a Chihuahua who transforms into a fire-breathing lion-serpent hybrid.
- 18. Percy's mother. Trapped in the underworld.
- 20. Twelve-year-old demigod. Son of Poseidon and Sally Jackson
- 21. God of the Underworld. Described as greedy, heartless, and deceitful.
- 22. The three frail, ancient-looking women with silver hair who knit giant socks.
Down
- 1. Also known as Mr. D. The camp director for Camp Half-Blood.
- 4. A titan who ate his children because he did not trust them.
- 5. Also known as Chiron. Centaur in charge of activities at Camp Half-Blood.
- 9. Pen/sword given to Percy by Chiron, also known as Anaklusmos.
- 10. The three worst monsters from the Underworld.
- 12. A friend of Percy’s, and daughter of Athena.
- 13. One of the Big Three. Suspects Percy's father of stealing his lightning bolt.
- 16. Daughter of Ares who bullies Percy at Camp Half-Blood.
- 17. Sally Jackson’s lazy and abusive husband. Stepfather to Percy.
- 19. God of war. Father to Clarisse. Arrogant and skilled at deception.