Called Brightflame in his youth but remembered as the Monstrous in the histories, Aerion was the son of Prince Maekar and grandson of King Daeron II. A skilled knight but more than a little mad, Prince Aerion was extremely volatile and violent, and even had the delusion that he was in truth a dragon in human form. He was sent away to Lys for some years by his father after having wrought havoc and brought about the first trial of seven in over a hundred years following an incident with a hedge knight at a tournament in Ashford.
Aerion the Monstrous died in a final act of madness, drinking a cup of wildfire while claiming that it would turn him to his true dragon form.