When you fight the Boss (a.k.a the joy) she says she has had a child. Who is the child? Mabye Ocelot?
Also the snake coming out of her body is something because she says: "There is only room for 1 Snake and 1 Boss." You are Big Boss so who is the Snake? Also that means on MGS 1 & 2 Ocelot is a good guy.
P.S Where is the new MGS 4 going to be set? 60's 70's 80's 90's or 2006?