Who is the witch in Harry Potter's Iron Triangle?

Hermione granger, hermione granger, full name hermione jean granger. She is the heroine in the series, a good friend of Harry Potter and Ron Weasley, with great love and sense of justice, and a high talent for magic. Many readers like her confidence, wisdom, cleverness and courage. High flyers Harry and Ron of Hogwarts School of Witchcraft and Wizardry are important parts of the Golden Trio.