In the beginning, Iwan Rheon auditioned for the part of Viserys, but a different actor got the role. Later, he was asked to return to audition for the role of Jon Snow but, as you know, Kit Harington got it. But the producers liked Iwan Rheon and they didn’t want to lose him. Fortunately, there were a lot of roles in Game of Thrones so when they were looking for someone to portray Ramsay Bolton, they instantly offered the part to Iwan. Iwan says, “Yes, everything could have been different. But I think they made the right choice. With me, it would have been a totally different Jon Snow.”