Professor Sinistra

Professor Aurora Sinistra is one of Hogwarts’ least-seen teachers, responsible for Astronomy lessons conducted from the school’s highest tower. Her rarity on screen made her an unlikely minifigure for many years, which is exactly why her eventual inclusion matters. LEGO Harry Potter has matured from a line focused on Harry, Ron, Hermione, and major villains into something closer to a population study of Hogwarts. Sinistra represents the institution itself: a teacher whose subject, classroom, and name help make the school feel larger than the scenes the films choose to show. She is world-building in minifigure form.