Born in Gothenburg, Sweden, William Söderäng attended medical school in order to help heal the world. After he had graduated, he spent his time with a few different NGO's, travelling to different places in the world where people had need of his skills. When the outbreak came, William followed his companions to Russia in order to help the people in need. One by one his companions fell, either by the infected or by their fellow healthy survivors, until William was the only one left. He now wanders Chernarus, determined to stick to his hippocratic oath of doing no harm and providing aid to those in need.