Hermione Granger (played by Emma Watson)
Hermione (pronounced "Her-my-oh-nee") is the star student of the Gryffindor House, and her vast range of knowledge helps her best friends, Harry and Ron, out of plenty of scrapes. Some people call her a show-off, but that's probably just jealousy speaking. Hermione is 100 percent Muggle, raised outside of the wizarding world by her dentist parents.
Photo: Warner Bros.