EW: Did you model him on a more traditional vampire?
Mark Gatiss: No, Toby gave me this fantastic description. He just sent me a text that said, “Would you come and play the King Vampire?” I said yes immediately. Then, he sent me the script for episode 7, which is where we arrive right at the end, and I have that wonderful line, “Well, who’s hungry?” It said in the description that I am dark as the night and older than dirt. I loved that. Also, brilliantly, Toby said, “Let’s call him Mr. Snow,” as if he’s so impossibly old he doesn’t really have a name anymore. He forgot it a thousand years ago.