I'm afraid Iwan Rheon is doomed to play sadistic villains forever
Not sure if people know him from other roles but when I saw him here I could only think of the Bastard of Bolton. He even has the same haircut!
Not sure if he will turn into an evil sadistic villain in this series but I can't see him as anything else. He just did too good a job in Game of Thrones.
PS: He has this really nice winning smile... but now you expect him to turn into a monster any second lol.