Helena Bonham Carter: Bellatrix Lestrange (Harry Potter Franchise, 2007–2011)

Helena Bonham Carter chewed the scenery with a manic, terrifying brilliance as the fanatical Bellatrix Lestrange. As Lord Voldemort's most loyal and sadistic Death Eater, Carter brought an unpredictable, wild-haired intensity to the wizarding world.

Her cackling delight in dark magic, cruel hexes, and unapologetic malice permanently secured her crown as one of modern cinema's most wonderfully twisted and wicked villains.