Kardel Sharpeye, one of the Keenfolk, was one of the most skilled gunmen in his village. To his people, shooting is second nature, as they survived by hunting for food. This makes Kardel an unopposed master with firearms. His journey began after he took an ancient test, customary in his village. He slayed the Steepstalker with one shot across the valley, passing the test. But the bullet turned out to hit the beast in it's central eye, and then fell to be clutched in it's mandibles, which signalled a start of dark prophecy. And so, Sniper was exiled from his village, unable to return until he achieves greatness on the battlefield.
In Dota, Sniper is known for his powerful basic attacks, as his passive abilities allow him to hit enemies from far away with a chance to slow them. He can cover large areas with Shrapnel, that deals damage over time and slows enemies. His ultimate ability is Assassinate, that lets him fire a single, highly damaging shot, that is often used to make sure that low health heroes can't escape.