Chapter 4
In This Chapter
Achilles' Spirit
Ancient heroic guide
Also known as: Greatest Greek Hero
The spirit of the legendary Greek hero who guides Percy through understanding the curse of...
Annabeth Chase
Percy's mortal anchor
Also known as: Wise Girl
Becomes Percy's anchor point when he bathes in the River Styx. Her connection to him prevents the...
Bianca di Angelo's Spirit
Encouraging spirit guide
Also known as: Nico's Sister
The spirit of Nico's deceased sister who appears in the Underworld to encourage her brother.
Nico di Angelo
Underworld expert and advisor
Accompanies Percy to the River Styx and helps him understand the risks of bathing in its waters....
Percy Jackson
Invulnerable hero with Achilles' curse
Also known as: Perseus Jackson
Bathes in the River Styx to gain the curse of Achilles, making his body invulnerable except for one...
River Styx Blessing
Divine protection curse
Also known as: Achilles Curse
The invulnerability curse Percy received from bathing in the River Styx, with Annabeth as his...
Previously Seen
Charles Beckendorf
Heroic sacrifice for the greater good
Dies heroically while destroying Kronos's cruise ship, the Princess Andromeda. His sacrifice...
Grover Underwood
Leader of nature spirits
Now the leader of the nature spirits after inheriting Pan's essence. Works to rally the wild beings...
Oceanus
Sea Titan enemy
Also known as: Titan of the Sea
Ancient Titan of the ocean fighting Poseidon in underwater battles while the main war rages on land.
Poseidon
God fighting his own war
Also known as: Earthshaker
Fighting his own war against the sea Titan Oceanus while his son battles on land. Unable to help...
Rachel Elizabeth Dare
Oracle and prophet
Also known as: Oracle of Delphi
Now the Oracle of Delphi, able to see the future and give prophecies. Still maintains her...
Tyson
Cyclops general in Poseidon's army
Working as a general in Poseidon's army, leading other cyclopes in the war against Oceanus. Has...
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