Jason Grace

Jason Grace is the main protagonist of the second Camp Half-Blood series, The Heroes of Olympus. He is a Roman demigod, a son of Zeus, as his Roman counterpart, Jupiter, and full-blood brother to Thalia.

History
Jason is demigod son to Zeus, as his Roman counterpart, Jupiter, and mortal, Ms. Grace making him a full brother to Thalia Grace. He was conceived seven years after Thalia was born. At the age of two he was taken away by Hera and brought to Lupa to be trained in the Roman counterpart of Camp Half-Blood. He has a scar on his lip from trying to eat a stapler when he was 2 years old. His memories were later stolen by Hera, was sent to Wilderness School and was switched with Percy Jackson in Greek's Camp Half-Blood as a trade of leaders to serve as a bridge and finally bring together the two divided groups of demigods.

The Lost Hero
Jason wakes up on a bus belonging to the Wilderness School where kids are sent for doing bad deeds that need to be cleaned up. He finds that he has no memory of even going to the school or having a best friend named Leo and a girlfriend named Piper. Coach Hedge, his supposed gym teacher, tells him that he's never seen him before today and that the Mist has been manipulated to make everyone think that they know him. He also reveals that he, Piper, and Leo are demigods and that an extraction team is coming to get Piper and Leo to camp along with and unknown "special package." This story is confirmed when Jason sees Leo make a working mechanical helicopter out of pipe cleaners. Later, an unnaturally powerful storm arrives and the class bully Dylan revealed himself to be a Ventus (storm spirit). Jason instinctively took out his gold coin, flipped it, and Ivlis became a well balanced, completely golden sword. While he and Piper fought off Dylan, Hedge (who revealed himself to be a middle aged satyr) climbed down the canyon wall to retrieve Leo, when he was thrown down. Jason also survived a lightning bolt with which Dylan attacked him that could have killed twenty men, (it blew off his shoe though), and when Piper is thrown off the skywalk Jason jumps after her, learning that he can manipulate air. After a long battle Dylan takes Hedge away and leaves Leo, Jason, and Piper on the canyon skywalk. Just then two half-bloods arrive on a chariot pulled by pegasi; a guy named Butch and Annabeth. When Annabeth and Butch notice Jason only has one shoe on (as the other one was blasted into bits by the lightning bolt) Butch tells them that Annabeth had a vision that a boy with one shoe would help her find one of the campers, who has been missing for three days, Percy Jackson the 'Lost Hero'.

After they arrived at Camp Half-Blood, they find out Hera's is in danger, and Jason must lead a quest in order to save her. He chooses Piper and Leo to go with him.

Personality
Jason is a serious person with a moderate sense of humor. He is naturally heroic, even after suffering memory loss he was able to wield his sword and lance with perfect ease.

It is suggested in The Lost Hero, based on Jason's recovered memories and the fact that he was "exchanged" for Percy Jackson, that he is Percy's opposite number from the Roman demigod camp. Like Percy, he is viewed as both his camp's wartime leader and its greatest warrior. Having defeated Krios in single combat during the Battle of Mount Othrys, he is also the only living mortal to duel a Titan and live, apart from Percy himself.

Abilities
Jason has ADHD and dyslexia. He has control over the air allowing him to glide. He is immune to lightning strikes.

Magical Items

 * A gold drachma that turns into a golden sword or a spear depending how it is flipped. The weapon hasn't been named yet in the series, but the coin has the word 'Ivlivs' on it, which is Latin for 'Julius.'

Trivia

 * Jason was named after the original Jason to please Hera after being conceived.
 * Hera sent Jason to a Roman version of Camp Half-Blood to be raised by Lupa when he was just two years of age.
 * It is revealed that Jason and Thalia Grace are one of the very few to be full siblings (having the same mortal mother and godly parent).
 * They are also the only known siblings to be from different aspects of the same God. Thalia is a Greek (being a daughter of Zeus), and Jason is a Roman (being a son of Jupiter).
 * Jason lost his weapon Ivlivs in his fight with Enceladus who broke it and caused an explosion from the magic escaping from the Imperial Gold.
 * Jason received a new sword from Juno at the end of the book. What if any powers it has and what it is made from is yet to be revealed.
 * He is known to be the leader of the Roman version of Camp Half Blood because of his quest he become respected at both camps and his is considered the opposite of Percy in personality.
 * Jason and Percy where forced to trade places at each other camps as they are seen as the camp leaders (the most respected campers), by wiping their memories and placing them in each other lives Hera hopes that they will come to understand each others culture and unite them in their fight against Gaia and her army of Giants.