As to the riddle, the writers may have just taken it from: "In Battle-scars and times of strife, resistant to the most brutal of strikes. I live among men and children alike. But not once have you seen me walk past you. But my biggest fear grows with things left overnight. Who am I?"
What is the context of this quote that it was taken from? Where did this come from? To what was @Codosaur referring to with that quote?