Dave Cunningham a.k.a "D" was a Doctor that worked in the U.S. but was shipped over to Cherno to assist with the outbreak. Dave didn't really know what he was going to deal with however. When Dave got there he had then realized what he was dealing with, he was so scared by the outbreak that he just straight out try fleeing Cherno that same day but then got stuck in the Airport. Dave had then for the next 2 years sleep in a tent in the far north woodland of Cherno and just gather as much supplies as he can, but one day he accidentally burned his camp down to the ground by having his campfire to close to his tent which caught fire and burned everything. This devastated Dave and almost drove him to the brink of insanity, after his camp burning Dave just wondered Cherno .Dave never got out of Cherno do to the fact that according to him the government gave up on them that's why they bombed the country. At the point in time of his story Dave is just trying to survive and hide the fact that he was a top notch Doctor unless he really needs to shows his skills. Dave knows basic hunting and weapon skills due to his Father teaching him when he was a young boy. Dave has been able to avoid all contact with any non infected humans since the outbreak due to that he talks to himself at times thinking he is talking to someone else. Dave does want to find a group that he can roll around with however due to the fact that he hasn't seen anyone in close to 2 years, he realizes that he is going in sane by talking to himself even though it makes him feel better. Own day Dave may be able to share his past with others once becomes more comfortable with people.