Board Thread:General Discussion/@comment-86.46.22.35-20130403153709/@comment-6747658-20130503090414

I think the Dr Madnar name was intended since he's supposedly an expert on cybernetics, if anything it's a cameo for the old time fans.

But yeah, the known canon from MG2 is pretty much, Big Boss survived Outer Heaven and rebuild his army in Zanzibar, Gray Fox joined up with Big Boss. Snake blew up Metal Gear D then fought Gray Fox on a minefield where Fox is implied to have been blown up and that Snake Fought Big Boss and killed him. MGS also added in a new bit of canon that Big Boss told Snake that he was his father somewhere before the fight (input "Luke I am your father" scene here)