Karla Sofía Gascón stars in Netflix movie "Emilia Pérez." She talks about meeting Madonna, confronting transphobia and wanting to play a Bond villain.

The title character of “Emilia Pérez” doesn’t exist at the beginning of “Emilia Pérez,” and there is considerable joy in her creation. Or re-creation. And joy, too, in watching filmmaker Jacques Audiard put an operatic spin on a story that was ...