I felt audiences are happier to take comedy people who play darker people because there's a link between the psychosis of comedy and the psychosis of being a twisted character.
“I am sure that I have been much more useful to society as a medical physicist.”
“People always tell me I'm nothing like my character. Well, hopefully not! He's a character who's very defined. He was purposefully written by Jo Rowling as very one-dimensional in the first few books, because you're supposed to hate him.”