Minerva McGonagall
The indelible image of the stern yet just Professor of Transfiguration remains ingrained. With her hair tightly knotted into a bun, high cheekbones, and sharply defined features, she emerges as a formidable figure in the books. She's characterized as tall, exuding an aura of authority in her every step.
Dame Maggie Smith, the chosen actress, also needed a wig to embody the character, which she did with the elegance and poise synonymous with her name. However, it's notable that her appearance in the AI-generated image bears little resemblance to her.