‘Downton Abbey’s’ Dan Stevens to Star in FX’s Marvel Series ‘Legion’ Good news Downton Abbey fans – Dan Stevens is about to be back on our television screens! Stevens is set to star in Legion, the new X-Men universe pilot coming to FX from Fargo creator Noah Hawley. He’ll be playing David Haller, otherwise known as By Lacy Baugher filed under Sci-Fi on 2/5/2016
