Board Thread:Metal Gear Solid V/@comment-93.42.16.80-20151001202236/@comment-193.60.218.253-20151002101103

The reason Big Boss had Venom Snake take up his name is because he needed to build Outer Heaven but he had to do it behind the scenes without Cipher watching him.

Even if he didn't have Venom take up his name Big Boss, Cipher would know Big Boss is in hiding and use all their resources to find him.

By having Venom pretend to be Big Boss Cipher wont interfere while he builds Outer Heaven.