YUKI NAGATO from the anime of "Melancholy of Haruhi Suzumiya"
Yuki Nagato (長門 有希, Nagato Yuki) is a fictional character in the Haruhi Suzumiya franchise. She is initially portrayed as an introverted, taciturn bibliophile. She is actually an artificial human created by the Data Integration Thought Entity, and possesses supernatural powers as a result. She never officially joins Haruhi Suzumiya's SOS Brigade, but observes and takes part in club activities on the behalf of the Entity while still being the only member of the Literary Club. In addition, she is present to ensure that Haruhi does not use her godlike powers, and aids the other Brigade members in stopping forces that cause her to do so. The alternate Yuki established in the fourth light novel, The Disappearance of Haruhi Suzumiya, is the main character of the spin-off manga The Vanishing of Nagato Yuki chan.