Imelda Staunton as Dolores Umbridge – Then
Dolores Umbridge debuted in "Harry Potter and the Order of the Phoenix" as the conniving Senior Undersecretary to the Minister for Magic. She later assumed the role of the Defence Against the Dark Arts Professor at Hogwarts, followed by becoming the Hogwarts High Inquisitor.
Umbridge's ruthless methods and tyrannical leadership led to the dismissal of Dumbledore and her appointment as Headmistress of Hogwarts. She harbored a deep hatred toward Harry Potter, consistently undermining his claims and resorting to torture. However, her reign came to an end when centaurs intervened.
