Revived Villains

In the Percy Jackson series, there have been many mortals and monsters that died in the original myths, but were revived. These do not include species of monsters, such as cyclopes or hellhounds, but individual monsters that are one-of-a-kind, such as the Minotaur or Procrustes.

Minotaur
Back in the age of heroes, the Minotaur was born of the union between Pasiphae and the Cretan Bull. King Minos had Daedalus build a Labyrinth that the Minotaur would live in so that it would never escape and wreck havoc. To keep it under control, every year he'd feed it 14 youths as a sacrifice. Theseus volunteered to be sacrificed and he slew the monster. He escaped the Labyrinth with the help of Ariadne's thread.

Now in modern days, Percy kills it by jumping onto the its back, pulling off one of the its horns and stabbing it in the side. Percy kept the horn as a spoil of war, after Grover returned it from the scene of the battle.

Medusa
Medusa is a daughter of Phorcys and Ceto and was once a priestess of Athena. After Medusa and Poseidon desecrated Athena's virgin temple, Athena cursed Medusa and her sisters. Her hair was turned to snakes and anyone who would look upon her gaze would turn to stone. She was once a beautiful woman before Athena cursed her. Her only company is her statues. She has a child from Poseidon, Chrysaor, who was born from her neck, and another child, Pegasus who was born from her blood when Perseus beheaded her.

Percy and Co. are lured into Medusa's lair, called Aunty Em's Garden Gnome Emporium, by the smell of food. Annabeth and Grover realized her identity, but Percy stays, realizing too late. He eventually beheads her, just like his namesake, Perseus.

Chimera
The Chimera has the head of a lion, the body of a goat, and for a tail it had a venomous snake. It could breathe fire and was immensely strong, and had a high intelligence. In ancient myths, the Chimera was killed by Bellerophon on Pegasus when Bellerophon jammed a lead ball into its mouth. The ball melted, killing it with lead poisoning and suffocation.

In The Lightning Thief, Percy, Grover and Annabeth meet an old fat lady and her pet Chihuahua in the St. Louis Arch. When Percy is forced to wait for the second elevator down, along with a few tourists, the fat lady and the Chihuahua transform into their true forms, Echidna and the Chimera. Percy tries to defend himself and the tourists, but is hopelessly outmatched. After being poisoned by the snake-tail, he desparately jumps out of the Arch into the Mississippi river below, where he is healed. Echidna and the Chimera disappear once the mortals show up.

Procrustes
Procrustes was a Son of Poseidon who lived on the sacred road between Athens and Eleusis. He'd invite passerby to sleep in his bed overnight. While they were sleeping he'd strap them up and stretch them if they were short enough, and chop off whatever hung off if they were too tall. He was captured by Theseus, who "fit" him into his own bed.

Percy, Grover, and Annabeth are chased into Crusty's Water Bed Palace by a gang of mortals in Los Angeles. He captures Annabeth and Grover in one of his magical water beds, trapping them. However, he forgot about Percy, and proceeded to get tricked into lying down on his own water beds by him. Percy then chopped off his head.

Tantalus
Tantalus was a king of a western Anatolian City. He was a son of Zeus and a nymph named Plouto, making him an immortal, and not a demigod. He stole nectar and ambrosia from the Gods, and in exchange he gave them his son Pelops as food. Only Demeter ate his shoulder, because she was distraught about Persephone. Zeus put Pelops together again and Hephaestus gave him a bronze shoulder. Tantalus was sent to the Fields of Punishment, where he resided in a small pool of water with a fruit tree above him. Whenever he'd try to eat or drink, the water or fruit would draw away from him.

When Thalia's Tree was poisoned, Chiron was replaced by Tantalus as the activities director. He disliked the campers, but had a soft spot for Clarisse (who didn't enjoy it at all). He reinstated the chariot racing, with the pretense that if anyone died, the killer would have no dessert for a week. He still had his curse, but eventually he was able to grab a hamburger. Unfortunately for him, that was the time when he was sent back to the Underworld.

Nemean Lion
The death of the Nemean Lion was a task given to Hercules by King Eurystheus. Hercules wrestled it to eath, because only its claws could cut its skin. Hercules wore its pelt as his identifiable look.

The Nemean Lion was sent to attack the questers at the National Air and Space Museum. It was hard to defeat because of its invulnerable pelt, but Percy fed it some astronaut food and Bianca and Zoe shot its mouth with arrows. Percy, like Hercules, wore its pelt afterwards.

Geryon
As Hercules' tenth labor, he had to take the cattle of Geryon. Hercules shot Geryon with an arrow dipped in the venom of the Lernaean Hydra, killing him. Hercules took the cattle.

Percy meets him in the Labyrinth, somewhere in Texas. He cleans out his stables in order to set his friends free, and defeats him by shooting an arrow straight through all three of his hearts.

Antaeus
Antaeus, a son of Poseidon and Gaea, was a wrestler that collected the skulls of his victims to make a temple to Poseidon. He challenged Hercules to a wrestling match. When Hercules realized that whenever Antaeus touched the ground he healed himself, due to his mother being Gaea, he raised him up into the air and crushed him into a bear hug.

Percy, Annabeth, and Rachel met Antaeus in an arena filled with human skulls. Percy challenged him, and forced him to promise on the River Styx that if he won, Antaeus would have to set him and his friends free. Annabeth tells him that he is a son of Gaea,and after cutting Antaeus with Riptide had no effect, Percy wrapped a chain around Antaeus, and lifted him in the air, and then stabbed him. However, with Antaeus dead, his promise on the Styx was no longer valid and Luke was ready to kill them had they not found a way to escape.

The Last Olympian
Cancer

In mythology, Cancer came to the Hydra's aid sent by Hera. It was defeated and kicked into the stars by Hercules with him only using his bare hands. It is also said that Hercules crushed a giant crab under his foot.

Percy encounters Cancer while on the Princess Andromeda, on the fountain in the middle of the courtyard, in the promenade. Fighting it, Percy defeated the Giant Crab by making the ground slick with water, and then sliding underneath him to stab the Crab in a chink the belly, which was its weak spot. The crab dissolved, leaving behind its empty shell as a spoil of war.

Typhon

A fter the First Olympian War, Gaea was enraged at the defeat of the Titans her children and of how they were locked away in Tartarus. She attempted revenge by sending her last and most powerful child, the great monster Typhon to destroy the gods. Typhon alone is the greatest foe the gods ever faced, even mightier than the Titans themselves. Having never anticipated such a rival, the gods were quickly forced on the defensive. Zeus, however, struck Typhon square in the chest with the Master Bolt at point blank range, greatly weakening him. The gods were then able to trap him in Mt. Etna, where his raw power itself causes lava to ignite from the mountain top in the form of a volcano. After the defeat of her most powerful child, Gaea admitted defeat and fell back to sleep and allowed the gods to rule Olympus without interference.

Typhon woke up from under Mt. Saint Helens and walked across the Continental US but was defeated by Poseidon over the Hudson River.