His Dark Materials is one of the most underrated fantasy shows of the last 10 years, and the HBO series deserved so much better after all the Game of Thrones replacement talk. Based on Philip Pullman's fantasy series of the same name, His Dark Materials took Dafne Keen's Lyra Belacqua on a journey that spanned universes, bringing viewers on that ride alongside her. With actors like Keen, James McAvoy, and Ruth Wilson at the helm, His Dark Materials' cast offered enough reason to watch the three-season HBO series.