Upon entering Vault 13 and meet a few of the Vault dwellers. You see a humanoid figure wearing a long sleeved, hooded robe that appears to be reading a book. There is something unnatural about his stance, but you're not sure exactly what it is. In a deep, almost guttural series of growls, he spoke

"Hello outsider, pleased to make your acquaintance, may i ask your name and where are you from? If you want of course."