Jaime is the Kingslayer, but the original plan was to see him kill other Lannisters in his bid to sit on the Iron Throne himself. A 'Kinslayer' perhaps? He's the ultimate villain in the original plot, with no sign of Tywin, and Jaime comes with a cruel streak that isn't often seen in the show. Martin outlined his plans for the aftermath of Joffrey's death. Jaime would kill every person in front of him in the pecking order to be king, and blamed all of the murders on Tyrion who flees and defects to the northern cause. King Jaime Lannister. It's never going to happen now, but it was the first plan.