This papercraft is Sniper, a character from the team-based first-person shooter multiplayer video game Team Fortress 2, the papercraft is created by [unknown]. There is also another version on the site.
Hailing from the lost country of New Zealand and raised in the unforgiving Australian outback, the Sniper is a tough and ready crack shot. The Sniper's main role on the battlefield is to pick off important enemy targets from afar using his Sniper Rifle and its ability to instantly kill a target with a headshot. He is effective at long range, but weakens with proximity, where he is forced to use his Submachine Gun or his Kukri. As a result, the Sniper tends to perch on higher grounds or in hard-to-see places, where he can easily pin down enemies at chokepoints.
Although he is typically known for instantaneously killing enemies at a distance, the Sniper can use the Huntsman to get closer to the enemy. Additionally, the Sydney Sleeper and the mysterious contents of Jarate allow him to take on a support role by causing enemies to take mini-crits. [Source: TFwiki]
You can download this papercraft template here: Team Fortress 2 - Sniper Ver.2 Free Papercraft Download [Box] [Gavitex]