Bushman. He walks around in a ghillie, calls it his bush. He is from the bush, the literal bush. The bush is him, he is the bush. The bush and Bushman are always together. He mostly lives of the land and keeps to himself. He cares about his bush more than he cares about himself. He carries around a pistol but only to defend himself against the infected. He has no intent to hurt anyone. He loves nature and only hunts when absolutely needed. He tries to care for all, gives things others what they need.
He was born in the outskirts of Russia, to American parents. Although they taught him English, they never really cared for him. Because of this he spent most of his time alone, out in the wilderness. There he became accustomed to wear a 'bush' around him. In reality it he would just tie branches and leaves to him. This bush made him feel less alone, less afraid it served as a friend in a sense.
Again, because he spent most of his time alone he was essentially a nomad, roaming from place to place without any goal in sight. Eventually he ended up in South Zagoria, right around when the outbreak began. Since then he has been stuck there. Making the best of the situation and sticking to what he knows about nature and the world around him.