Jamie Campbell Bower as 001: ‘Stranger Things’ Character Info

In all his resentment toward Eleven, toward “Papa,” and toward his family, 001 becomes Vecna, a demo-creature who possesses and kills the teens of Hawkins. Jamie explained to EW how Vecna came to be: “The way I always saw this journey for Henry was: sweet, sweet, sweet, nice, nice, nice, manipulate, manipulate, turn, full on total resentment, hatred, carnage.”