A Friendly Neighbourhood Dead Guy is usually a random person, who is now dead, that nobody can be bothered picking up.
The Dead Guy will, after a number of weeks, become a member of that society despite his obvious death and putrid stench.
A Friendly Neighbourhood Dead Guy's history can only be assumed by locals, and a main conclusion drawn between citizens is that they are drifters scalped for their body parts which usually explains the entrails often hanging out of the Dead Guy's face.