In which film is Elton John a character?

Who played Andy Sachs in 'The Devil Wears Prada'? In which film is Andy Sachs a character? In which film is Cher Horowitz a character? Who played Elton John in 'Rocketman'? Who played Bob Dylan in 'A Complete Unknown'? In which film is Bob Dylan a character? Who played P.T. Barnum in 'The Greatest Showman'? In which film is P.T. Barnum a character?