Donny grew up and lived in Chernarus and lived in Chernogorsk where he ran a retro & gaming store. He survived the civil war and when the outbreak happened managed to survive with 2 friends. After living the wasteland survivor lifestyle he got caught up with some bad dudes in Svetlojarsk after an arms deal went sour. So he decided to skip town with his buddies after the bad dudes came for him. They ended up on Deer Isle and were attacked by zombies not long after arriving there. Donny was split up from his buddies and is now settling down in Deer Isle to reopen his business in the hopes that his friends will appear one day.
Whilst Donny was taught Chernorussian at a young age, he learnt to English playing online with people he met from all around the world and quickly adopted this as his main language. Also it came in pretty handy when the Outbreak started and the US Marines came he quickly realized that English was his only option to talk to them and get help, so now a days that's his main language. That's the short version I guess you'll have to meet Donny in person to find out more!