Watch Game of Thrones Season 3 New Characters. Here are the new casts added in Game of Thrones Season 3. Some of you might love them and some of you might hate them. Whatever your judgement with them, they are but those casts who will add spices into our season 3 episodes. Who are they and what will be there role in this season? Watch the video below and listen to what they say. Start to choose who will be your new idol.