Hermione Jean Granger ( hur-MY-ə-nee GRAYN-jər) is a fictional character in J. K. Rowling's Harry Potter series. She first appears in Harry Potter and the Philosopher's Stone, as a new student on her way to Hogwarts. After Harry and Ron save her from a mountain troll in the girls' restroom, she becomes best friends with them and often uses her quick wit, deft recall, and encyclopaedic knowledge to lend aid in dire situations. Rowling has stated that Hermione resembles herself as a young girl, with her insecurity and fear of failure.The character has had immense popularity. The version of Hermione portrayed by Emma Watson in all eight Harry Potter films from Philosopher's Stone in 2001 to Deathly Hallows – Part 2 in 2011 was voted the best female character of all time in a poll conducted amongst Hollywood professionals by The Hollywood Reporter in 2016.