CH.19
While Grover is wearing the winged sneakers given to Percy by Luke, they suddenly sprout wings on their own and attempt to drag him into this deep, evil subterranean pit.
When Percy and his friends finally return to the mortal world on Santa Monica Beach, this Olympic God of War is waiting for them.
Ares
Percy gets revenge on Gabe during a live television news interview in Los Angeles by telling reporters that Gabe offered to give away one of these items to anyone who calls.
A free appliance (TV)
To reach Mount Olympus and return the Master Bolt to Zeus, Percy must convince a security guard to grant him access to the secret which floor of this iconic Manhattan skyscraper.
The 600th floor of the Empire State Building
When Percy finally meets Hades in person, he notices that the Lord of the Dead's dark robes are actually woven from the faces of these tormented figures.
damned souls (or suffering souls)
After defeating Ares and retrieving Hades' stolen Helm of Darkness, Percy gives the helm to these terrifying creatures (specifically Mrs. Dodds/Alecto) so they can return it to their master.
the Furies
To prove he is a demigod and persuade the reluctant guard on the 600th floor security desk of the Empire State Building to let him up to Mount Olympus, Percy shows him this dangerous item.
Mater Bolt
After discovering that the Master Bolt had been magically concealed inside the backpack given to him by Ares, Percy realizes that this second item—stolen from Hades—was the true motive behind the scheme to spark an all-out war among the Big Three.
The Helm of Darkness
Percy faces a heartbreaking dilemma when he realizes that because each magic pearl only protects one person, he is short by this many pearls to save his mother along with himself and his two friends.
1 Pearl!
Ares reveals that he didn't come up with the plot on his own; he was being manipulated through dreams by the voice of this ancient, evil Titan residing in Tartarus.
Kronos
Rather than giving him a magnificent gift, Zeus rewards Percy by sparing his life and doing this for his mother, Sally.
Returning her safely to her apartment
Instead of appearing as a grotesque monster, Hades resembles a 10-foot-tall ruler in robes woven with trapped souls, and complains primarily about these mundane administrative headaches.
overpopulation, security costs, and managing the growing dead
To battle a literal god, Percy combines two main tactics: using his water powers to energize himself and create a wave, alongside this psychological tactic to throw Ares off-balance.
By taunting him (or using his anger/hubris against him)
Upon gazing at the breathtaking grandeur and magnificent beauty of Zeus' palace on Mount Olympus, Percy feels a sting of sympathy for Hades for this reason.
Seeing how dark, dismal, and lonely Hades' realm in the Underworld is compared to Olympus
During his trip through the realm of the dead, Percy observes the abyss of Tartarus, the paradise of Elysium, and this vast, gray field where millions of average souls wander aimlessly in lines.
The Fields of Asphodel
When Percy slashes Ares' ankle and draws golden ichor, Ares stops himself from retaliating with full divine force because this terrifying power intervenes and forces him to back down.
The presence/will of Kronos (the voice from the pit)
Percy decides not to use Medusa's head to petrify Smelly Gabe himself, leaving the choice to his mother because he realizes this fundamental truth about her.
That she must make her own choice and stand up for herself