The Will of the Many discussion

I want to get your opinion on
1) The nature of "will" - what exactly is will?
2) The true origins of the hierarchy?
3) What exactly was Kaid's father involved in?
4) What did Melior know and why did he really sacrifice himself?
5) What is Rez?
6) The Role of Krator?
7) Why the Censor really want Kaid?
8) What caused the blast in Sus - what is that weapon?
9) Why is Kaid immune to Sappers?

What do you think

1. Who is Kaid?
2. who is Krator?