Board Thread:Metal Gear Solid V/@comment-86.45.17.40-20150909104026/@comment-64.33.250.214-20150911225002

I never really gave it much consideration, but all this talk of Gray Fox being Zero's son is starting to make some sense to me. They both share similar codename's (Zero and Null) and they even look similar judging by Shinkawa's art:

http://vignette2.wikia.nocookie.net/metalgear/images/1/18/Frank_Jaeger_%28MGS4%29.PNG/revision/latest?cb=20130720043635

http://img1.wikia.nocookie.net/__cb20140315204721/metalgear/images/7/72/MGS3_Zero_Yojji_Shinkawa.png

Frank Jaegar's name sounds like Mick Jagger, who is a famous musician rumored to have had an affair with David Bowie. Zero's name is "David Oh", which could be a reference to David Bowie. Bowie had a song called "Oh! You Pretty Things". On the cover of "Oh!" Bowie resembles The Boss: http://i.imgur.com/5KcmMCw.jpg

It could just be coincidence, but there are numerous references between Bowie and Metal Gear which are largely intentional. Kojima originally wanted to having the song "Major Tom" (a codename for Zero) play during Snake Eater.

Storywise, it'd make sense for Null to join Big Boss's efforts against the Patriots after they strayed from Zero's plans.