who is he! (Reigress/Artery)

(Please note, this story, like Forever his apprentice is an alternative reality, however that doesn't mean its separate from forever his apprentice as this will act as a kind of sequal to that book.
These two will not be considered cannon to the original three but rather filler story lines to keep me busy during my spare time.) Artemis begins her day at Gotham academy the normal way like every other day, but when a new boy joins one of her classes that later gets turned on it's a1head.