Mark Hamill, Lena Headey and David Bradley Join the Cast of Guillermo del Toro’s TROLLHUNTERS for Season 2 Mark Hamill, Lena Headey and David Bradley have joined the second season of Netflix’s critically-acclaimed series DreamWorks Trollhunters, from Guillermo del Toro. They join an already star-studded cast from season one that includes Kelsey Grammer in his …