There are a lot of thing people say a man can't do. Like surviving through Tartarus, defeating Kronos, or killing the Minotaur with no training. But Percy had a knack for doing the impossible. He did all of these things and even befriended a huntress for crying out loud. But there is a person you just can't win against. It's because they know you. They can anticipate your every move. Even know what you're thinking before you do. But no one knows this person. They hide in the dark. When you sleep they walk. Deep in the recesses of your mind, showing you things that you may or may not like. If you look close enough you'll find that person. Right in the back of your head. That person is you.
Percy awoke in a cold sweat. That damned day. The day that was supposed to be the best day of his life turned into one his many recurring nightmares. He doesn't know why but his dreams start off peachy. But then it happens. He loses control of his body time his subconscious digs into an extremely unwanted memory. There are also times where he doesn't know who or what he's dreaming about. In his sleep he is a slave to his own mind. But this nightmare was different. Very different. There was someone else there. It was a silhouette of a man. The man was Percy's height and build. Although he didn't say anything, he just watched. While Percy's world was falling to pieces he just watched. And when the worst and most recent memory came, he smiled and cackled evilly as Percy screamed tried to wake himself up to no avail. He was forced to stay. Percy had to wait until this…thing was finished. Finished, torturing Percy mentally and then tossing him out the dream like a wet towel.
Percy hated that man. His jailor. That vile creature visited Percy in his dreams every night, like a monster hiding under his bed. Well, in this case, he was the bed.