Meet the Cast of Netflix's Hotly Anticipated Upcoming Series The Sandman

John Dee is definitely not a warm-and-kind role like Thewlis's famous turn as Remus Lupin in the Harry Potter films; instead, he's a man who has been driven mad and is out on a dangerous quest for the potentially devastating Truth with a capital T. Thewlis has a lengthy résumé on stage and screen, including another recent DC Comics role as Ares, the god of war.