Aaron has a mission, but he has no memory of his life before his mission was given. He does not really know who or what he is, or who is working for. He may be a Higher, because he has very advanced biononics., He knows his mission is to find Inigo, but he does not know why, or what to do what he must do when he finds Inigo, However he does know that once he does find Inigo, then, and only then, he will know what to do next.
Aaron is haunted by strange dreams of psychological and physical torture, in which a woman that he cannot perceive clearly, and hence does not know. appears to be the perpetrator.