Addy Sorrel came to Russia with her father, who was a part of a humanitarian group. She would travel between America and Russia often, coming back to help her father when possible. She was away when the outbreak happened, but had quick knowledge of something distressing because of his work there. She made the journey back as quickly as possible, rejoining her father. They continued to provide aid where they could, even during the outbreak. Together, they created shelters for people to escape the infected, giving food, water and first aid where it was needed. Over the small amount of time since the outbreak, she eventually lost her father to the infected and now searches for a way to survive alone, still driven to continue the humanitarian effort that she and her father began here. She eventually made her way to Chernarus, striving to help those who need it.
She has become more cautious over time, but hardly ever fails to help someone if she is able.