The Olympians
Percy's Family
Camp Half-Blood
Enemies
Non-humans
100

The god of the sky, thunder, and lightning 

Who is Zeus? 
100

The god of the sea, storms, earthquakes, droughts, floods and horses

Who is Poseidon? 

100

Exiled god and camp director of Camp Half-Blood

Why is Dionysus (or Mr. D.)?

100

Daughter of Ares and bully to Percy 

Who is Clarisse La Rue?

100

Chiron, camp activities director, for one. 

What is a centaur?

200

The god of the Dead and Riches and king of the Underworld.

Who is Hades?

200

Percy's mother

Who is Sally Jackson?
200

Item worn by campers identifying how many years they've been to camp

What are camp beads?

200

The god of war and personal rival to Percy

Who is Ares? 

200

Grover Underwood, friend and protector to Percy, for one.

What is a satyr?

300

The goddess of wisdom, civilization, mathematics, strategy, defensive warfare, crafts, the arts, skills, intelligence and brilliance

Who is Athena?

300

Cyclops half-brother to Percy

Who is Tyson? 
300

Camp game that pits half the camp against the other (or the whole camp against the Hunters of Artemis when they visit).

What is Capture the Flag?
300

Head of Hermes cabin and thief of the Master Bolt.

Who is Luke Castellan?

300

Monster wearing tighty-whities and chasing Percy to his first time to camp?

What is a minotaur? 

400

The god of roads, travel, gymnasiums, athletes, diplomacy, orators, thieves, commerce, trade, and invention.

Who is Hermes?

400

Percy's stepdad in the beginning of the story.

Who is Gabe Ugliano or Smelly Gabe?

400

Demigod daughter of Zeus turned into a pine tree at the border of camp

Who is Thalia Grace? 

400

 King of the Titans, father of Zeus and other major Olympians

Who is Kronos?

400

The "Mother of all Monsters"

Who is Echidna?

500

The god of the sun, healing, music, poetry, archery, and prophecy.

Who is Apollo (or Lester Papadopoulos)? 

500

The flying horse half-brother to Percy

Who is Pegasus?

500

The Security guard at camp, covered with eyes from head to foot.

Who is Argus?

500

Mother of Kronos

Who is Gaea?

500

The name of the three headed guard dog of the Underworld.

What is Cerberus?