Jason Grace

Jason is the main character of the second Camp Half-Blood series Heroes of Olympus.

History
Jason is a 15/16 year old shown to have no memory of his past, not even remembering how old he is.

The Lost Hero
He is sent to Wilderness School where kids are sent for doing bad deeds that need to be cleaned up.Later, an unnaturally powerful storm arrives and the class bully Dylan revealed himself to be a Ventus (storm spirit). Jason took out his gold coin, flipped it, and Ivilis became a well balanced, Celestial bronze sword. While he and Piper fought off Dylan, Hedge (who revealed himself to be a middle aged satyr) climbed down the canyon wall to retreive Leo, who was thrown down there. 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 wagon pulled by pegasi; a guy named Butch and Annabeth. When Annabeth and Butch notice Jason only has one shoe on (seeing as it was blasted into bits) 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 who is implied to be the 'Lost Hero'.

Even though Jason has no memories, he is perceived as a serious person with a moderate sense of humor. He also does heroic things by nature but can't explain why, such as jumping off the canyon cliff to save Piper or getting out his sword to fight Dylan as soon as he attacked his friends, so it is implied he was a heroic person (and probably still is) before he lost his memories.

Interestingly, he mostly uses the Roman terms for the mythical creatures he meets, such as calling Coach Hedge a faun instead of a Satyr.

Powers

 * Jason has the ability to fly, or at least float on air.
 * He is also not harmed by lightning strikes, at least not to the full extent.
 * Shares Percy's fatal flaw.
 * Jason can manipulate Mist.