I seems like a mystery that people do not feel like discussing much anymore these days. I attribute that to the fact that most people believe the Monster is the guardian of the Temple. Now the problem with that is it still leaves so many open questions and from I read in interviews the actors discussed how we would learn the truth about the monster this season. Now since I can;t wait that long I would love to hear what people's theories are on the Monster.
Who created it? What is it purpose? How/Can it be controled? Does it take the shapes of the dead? How does it read people minds? Why does it guard the Temple? Has its original purpose been changed to help Ben?