Board Thread:Questions and Answers/@comment-76.102.30.110-20130715013213/@comment-173.81.72.211-20140819044816

My gut is telling me that Skull Face was colateral damage during one of Zero's operatons. We know from prevous games that Zero actually worked with the Boss and possibly the entire cobra squad in the past. His injuries could have been incured by either the Boss or one of the cobra squad members on a mission that went south. This would explain his hatered twards Zero.