A faun is featured in C. S. Lewis' incredible fantasy series, The Chronicles of Narnia, particularly in The Lion, the Witch and the Wardrobe. This faun, Mr. Tumnus, is the first creature Lucy Pevensie meets on her initial visit to the magical land of Narnia, which she enters through a special wardrobe. The series is written for children, but for adults too. Indeed I remember reading this book as a child and realizing I should re-read it as an adult to see what more understanding I would gain.
Back to the faun, though. Mr. Tumnus is a key character in the book The Lion, the Witch and the Wardrobe. In fact C. S. Lewis apparently said that his first image of Narnia was in the form of a faun carrying an umbrella and parcels through a snowy wood. That faun was Mr. Tumnus.
Mr. Tumnus befriends the young Lucy, and appears to be a kind, gentle soul. However, when he plays his flute Lucy falls asleep. He then wakes her up and admits that he had ulterior motives (handing her over to the White Witch) when he invited her to his home for tea.
In the book, and the animated movie directed by Bill Melendez that I have watched numerous times with my daughter, Mr. Tumnus is portrayed as a kind faun, forced by the White Witch to try to capture any humans who enter Narnia, but innocent.
In a later movie version, Mr. Tumnus is played by James McAvoy whose performance elicited some controversy, with some suggesting his faun was less innocent and somewhat suspect in his relationship to Lucy. In my opinion, James McAvoy did a great job (love him as an actor anyway!) and his Mr. Tumnus was a delightful faun.