Harlan Duke is a man out of his elements. American soil is all he'd known prior to one chance trip to Chernarus as a governmental aid for soldiers who were undergoing a weeks-long survivor course in the rugged environment of Slavic regions. The onset of the infection and the horrors that followed saw him frozen in that desolate place, and he's lived since then hesitantly, avoiding groups and conflict as best he can. He's a good ol' American boy besides it though: a little on the short side, scrappy and wily and screaming Louisiana Cajun when the need arises for it
At times, he's just a little nervous, just a little shakey, but when it comes time to making a decision of a kind he'll be ready for it regardless of the consequences he'll face. That may just wind him into trouble... or keep him safe, as it has for months and months.