During Bran's whirlwind of greensight visions in the opening scene, we were given a glimpse of the Mad King Aerys Targaryen — Daenerys' father and ruler of the Seven Kingdoms before Robert Baratheon. Not only did we finally see him in the flesh, but Bran's vision included Jaime Lannister killing Aerys by stabbing him in the back. For a full breakdown of the vision, head here.