The first two seasons of Arrow are the main reason why we have such a rich and full DC Television Universe on The CW. The series gave us The Flash, Legends of Tomorrow, and Supergirl due to it's success. While the current season has seen a slight return to that fun storytelling, it's also going to give us the return of two fan favorite characters. Deathstroke and Nyssa al Ghul are set to return to Star City!