This papercraft is Celty Sturluson's Helmet, based on light novel / anime / manga series Durarara!!, the paper model was created by gankutsu-o-taku. For more information of Celty Sturluson please click on: Celty Sturluson Cube Craft Free Paper Toy.
You can download the papercraft template here: Durarara!! - Celty Sturluson Helmet Free Papercraft Download