Board Thread:General Discussion/@comment-74.103.222.104-20130930181409/@comment-42.98.41.24-20131001063350

Watch the MGSGZ trailer and you will know Skull Face is definitely not Chico.

Anyway that apart, it will be interesting to see Zero. It'd be nice if Kojima explains how he went underground and unconcious in the next game, if not in MGSV. That said, I don't think Big Boss and Zero will be supporting each other unless they are fighting against a common enemy.