Percival Fredrickstein von Musel Klossowski de Rolo III, often known simply as Percival de Rolo or Percy, is a human gunslinger member of Vox Machina and the father of firearms in the world of Exandria. He is played by Taliesin Jaffe.

Percy's family once ruled the city of Whitestone, but when he was young, they were overthrown and murdered by the Briarwoods, Anna Ripley and their allies. Percy fled, his hair turning white from the trauma, and he wandered aimlessly for several years.