Eren yeager in this AU is a 7 foot demon with claws for hands and talons for feet. He has black tar wings and a tail. Not only that, he is bound to the person that casts a spell to bring them to the mortal world. He has green eyes long brown hair and stubbled chin. When he shape-shifts to his human form to blend in with the humans, he becomes a regular looking man with long brown hair, green eyes, a stubbled beard around 6ft 1 in height wearing laid back clothing.