This is such perfect, beautiful, brilliant casting. How are we supposed to wait an entire year to see this? Executive producer Bryan Fuller tweeted the news with an appropriate amount of enthusiasm:
— Bryan Fuller (@BryanFuller) March 2, 2016
We'd tell you more about this character -- but if you've read the book, you already know, and if you haven't, that would be spoilers. He does show up to recruit the protagonist, Shadow, in his scheme, and is a mysterious and powerful figure. For more, just read the damn book!