So I have been playing metal gear V single/multiplayer, and loving it. Only problem: this is my first metal gear game.

Few questions: who the fuck is "big boss," and why is the guy I'm playing as (snake?) possibly not him?

Who is venom snake and how / why is he different from regular snake?

I'm only at 23% completion, but is this all a dream? I am so god dam confused.

Pic is me, the real big boss