This Star Wars papercraft is a Darth Nihilus Mask, designed by Juke. Darth Nihilus was a Human male who reigned as a Dark Lord of the Sith during the era of strife following the Jedi Civil War. Before becoming a Sith Lord, he lost everything during the Galactic Republic's war against the Mandalorian Neo-Crusaders. He survived the activation of the Mass Shadow Generator superweapon during the war's final battle at the planet of Malachor V, which surrounded the planet with a destructive spacial phenomenon known as a mass shadow. Experiencing the shadow that obliterated almost everything on and around the planet made Nihilus crave Force energy. The affliction painfully ravaged his body while rendering him a wound in the Force. He was found by a seeker of these, the Sith Lord Darth Traya, who told him that she could teach him to feed his endless hunger. He accepted her offer of apprenticeship at the Trayus Academy on Malachor V, and, over time, he became one of three concurrent Dark Lords of the Sith.
Together, they formed a triumvirate with Traya at its head and her other apprentice, Darth Sion, as the third member. The trio chose individual names for themselves, with Darth Nihilus becoming the Lord of Hunger. The apprentices grew in strength during their training and eventually overpowered their Master. Sion defeated Traya, while Nihilus sapped her energy, before the two Sith exiled her and combined their powers to sever her ties to the Force. Nihilus' affliction developed to the point where the Dark Lord was forced to call upon the dark side of the Force to encase his spirit within his mask and armor to stay alive. Sion and he then began a Jedi purge, causing the virtual extinction of the Jedi Order. Nihilus was responsible for the devastation of the planet Katarr in 3,952 BBY, killing and absorbing the Force energy of the Jedi at the Conclave on Katarr along with every other living thing on the world save one Miraluka woman named Visas Marr. Marr was collected from the surface and Nihilus began to train her as his Shadow Hand.
One year later, Nihilus sensed a growing presence in the Force and sent Marr out to eliminate it. That presence was a female Jedi, Meetra Surik, who was on a quest to find the few Jedi Masters who had survived the Purge. When Marr attempted to assassinate the woman, Surik defeated her and convinced her to turn to the light side of the Force in the process. Although Nihilus returned to lurking the fringes of known space, the man was eventually tricked by Traya into initiating the Battle of Telos IV in an attempt to absorb a Jedi Academy that actually lacked any Force-sensitives aside from the headmistress. Nihilus met a large fleet comprised of Republic and Mandalorian forces at Telos that distracted him while his flagship, the Ravager, was secretly boarded by a small force consisting of Surik, Marr, Mandalore the Preserver, and his Mandalorians. The trio confronted and slew Nihilus in the ensuing duel while the Mandalorians rigged explosives that destroyed the ship. The Sith Lord's armor maintained his spirit and was collected for burial on the Sith homeworld of Korriban, where his soul could be contacted with a holocron of his own creation. [Source: wikia]
You can download the paper model template here: Star Wars - Darth Nihilus Mask Papercraft Free Download