When Percy arrives with Nico, the Last Olympian Hades imprisons him in the Underworld because the death god wants his son to become King of the Gods and refuses to help his family battle the Titans. To save himself, Percy must defeat Hades's daughter Persephone so she will release him from his prison.
Hades hopes that by trapping Percy he will force him to take over the role of king and marry Persephone so she will never marry anyone else. But even though he is Prince of the Underworld and ruler of the Dead, there are still ways to escape from Hades' trap.
Percy first meets Hades when he comes to collect him for his trial by combat against Poseidon. At first, Hades seems like a nice guy who wants to be friends with Percy but once they enter the underworld it becomes clear that he has planned all along to put Percy in this situation so he can fight for him. During the battle, Hades tries to kill Percy but instead wounds him badly. Realizing that he can't beat Hades in combat, he asks Zeus for help. Sure enough, Zeus comes to his rescue and kills Hades while he was distracted by Percy's struggle with him. After Hades's death, Zeus turns him into a constellation called "Hades".
Percy then utilizes his new invulnerability and command of the river waters to dismantle Hades' army and conquer the god, forcing Hades to depart. However, his son, Nico, finally persuades him to aid the Olympians since it is the only way his family can accept him. With Hades' help, Percy travels back in time to avoid being killed by Poseidon's tsunami and prevent himself from becoming an adult. As a child, he once again tries to save Camp Half-Blood but this time he is successful.
Percy Jackson and the Olympians: The Lightning Thief is a 2013 fantasy novel written by American author Rick Riordan. The book is the second installment in Riordan's Percy Jackson series and follows the adventures of its main character, fourteen-year-old Percy Jackson (born Jason Grace), who is now on his own quest to find Zeus' hidden lightning bolt while dealing with major problems at home and at school.
The book was published on July 22, 2013 by Disney Hyperion. It received positive reviews from critics who praised its world building and character development but criticized the story for being too slow in the beginning.
Here is the synopsis of the book: "In this second book in the bestselling series, Percy Jackson travels with his friends to another world after the events in THE LIGHTNING THIEF.
Hades is a key character and one of the thirteen Olympians in Rick Riordan's Percy Jackson and the Olympians series. He is one of the Big Three, along with his brothers Zeus and Poseidon. He is the Greek God of the Underworld, wealth, and the dead.
He has been known to offer a glimpse of the future to certain mortals who have been good enough to earn his favor. These gifts are called "foresights". If the mortal chooses to share this gift with others, he or she will be given an equal chance at winning Hades' blessing.
People often think of Hades as being similar to Pluto, but they are not the same person. Pluto is the Roman name for Hades, and it is possible that people started calling the two names together because they thought them to be the same thing. However, this is not true: Hades is part of Olympus, while Pluto is the ruler of the underworld. Also, while both have dominion over the dead, they serve different roles. Pluto can be used by humans to send messages into the afterlife, while Hades can only be contacted by those who have earned his trust through their good deeds in life.
In modern culture, people sometimes confuse Hades with Satan, but they are not the same person. Hades is a God, while Satan is the name of the Devil, which is another name for a demon.