Who is he?(A Percy Jackson Fanfiction)

A lone assassin roamed throughout the western civilization. He was feared as the death itself. Some even called him the dean of death, a power so strong that made immortals cower in fear, he was called 'The Slaughtering Knight',for he had been known to slaughter thousands upon thousands,he was the harbinger of destruction. With voice so cold,gaze so menacing , glowing sea green eyes; he was a man to be feared,to be wary of. No one knew his name, they started calling him 'Moarte', DEATH a name such fitting to his fame. There are many stories about his existence; some say that he was abandoned and betrayed by the those he once loved, the betrayal weighing on his shoulders have turn him into the cold hearten beast he is now. But they are just assumptions, a few fishes in the sea of thousands.

But let's find out what his true story is!