This papercraft is Yurnero, the Juggernaut, based on the DotA 2 multiplayer online battle video game, the paper model was created by ArdianTjeng, shared by Kang Papercraft. There are also Juggernaut's Sword and Juggernaut's Mask Papercraft on the site.
No one has ever seen the face hidden beneath the mask of Yurnero the Juggernaut. It is only speculation that he even has one. For defying a corrupt lord, Yurnero was exiled from the ancient Isle of Masks—a punishment that saved his life. The isle soon after vanished beneath the waves in a night of vengeful magic. He alone remains to carry on the Isle's long Juggernaut tradition, one of ritual and swordplay. The last practitioner of the art, Yurnero's confidence and courage are the result of endless practice; his inventive bladework proves that he has never stopped challenging himself. Still, his motives are as unreadable as his expression. For a hero who has lost everything twice over, he fights as if victory is a foregone conclusion. [Source: teamliquid]
You can download this papercraft template here: DotA 2 - Yurnero, the Juggernaut Free Papercraft Download