Turning a funny party boy into a ruthless main antagonist
I have tried and been brainstorming this idea, and thought of this. In my story, one of my POV characters starts as the third son of a Duke and spends his time partying and drinking. The love of his life is a beautiful courtesan, but events in the first book, with the capture of one of his brothers and war erupting, he has to help his nephew and sister, the mother of the king, rule. It's here, in a war against the old king's bastard daughter (who would be a better ruler than his nephew), that he discovers a skill for ruling and comes to love being in power. I want this love for power and his lover to be the reason he craves power, and how it leads to him killing his nephew, father and eldest brother. I want him to start so well loved but descend into the blackest of villains who would murder children and burn the kingdom to be king of the ashes