Mr. Tumnus is the smart faun we all know and love from the Narnia franchise. He's the first creature Lucy meets upon entering the Wardrobe, and initially sells her out to the White Witch. After regaining the Pevensie kids'
trust again, he fights alongside Aslan to save Narnia.
This character is part of the Narnia Redesign Project, of which you can find out more about here!