The bad guy is often the easiest role to play, because they are often the best written. The screenwriter can have fun and indulge while the good guys react most of the time to that.
It’s become a kind of historical fact now that British actors, on the whole, play the bad guys. I don't know why. It started, I think, because the bad guys were the Germans and British people could put on a German accent. In those World War II films, we play the bad guys. And we could do Russian accents and all that stuff. We’re aliens, I think. I think we’re all foreigners, to the Americans.