"Yorgos Lanthimos said, "What about if he's a bit soft?" And I said, "Yeah, I think you're right." He just comfort-eats a little bit too much. He's just asleep in his own life and has let himself go. And the mustache, I don't know if it was him or I suggested it. But I remember my sister was watching me eat and she was like, "God, does he have to be fat?" And in retrospect I couldn't think of David being any other way because it affected the way I moved. It really did. It slowed me down in a way that I felt was conducive to kind of tapping into the spirit of the character."