[Mana]

Now that I see a member with this name, I remembered I wanted to post this before:

knowing you're very good at explaining, can you please tell me what are the links between Big Boss, Liquid and Solid?
I know about the ..ahem *spoilers maybe* cloning thing, but I'd like to know more. Who is exactly Big Boss? Why they made clones of him? Was he a special subject or what?