Actor Tom Felton learned the contemptuous Draco Malfoy smile from his grandfather. For days they practiced it together in front of the mirror. Until the then eleven-year-old not only looked evil enough to Lord Voldemort, but also to his grandpa. In reality, actor Tom Felton has a wide, winning grin. He still passes the Slytherin test. He probably doesn't realize it, but every time he says "Potter" it sounds suspiciously like Malfoy.