Hunter (Fallout 3)

Hunters are some of people you can randomly meet in the Capital Wasteland. Sometimes you meet them right in middle of "hunt", as they chase a lone wastelander. Killing those hunters will give you good karma. They're initially friendly to you, but naturally if you decide to attack them to protect their "prey", they will start firing at you too. Sometimes you can meet them just wandering around - in this case you can talk to them and buy some strange meat. Considering their "hunting" habits and what they tell about taste of meat, that strange meat itself well could be human meat of unlucky wastelanders.