Hermione Granger is a prominent muggle-born student from Gryffindor house. Her character is central to the series, known for her intelligence, dedication, and crucial role in assisting Harry in his endeavors. Muggle-born students, like Hermione, are born to non-magical parents but possess magical abilities. Hermione's background plays a significant role in the series, particularly concerning themes of blood purity and discrimination within the wizarding world.