alright so you've got the 3 snake brothers, solid, liquid and solidus. there dad, naked snake/big boss. youv'e got eva/big momma that could be described somewhat as a mother. there grandmother (same premise as eva) the boss/the joy there uncle, revolver ocelot, the boss' son (big boss'/naked snakes step-brother sort of?) raiden there nephew, who solidus took under his wing as a son. anymore i haven't thought of who could in someway or other be related. it feels like an amazing episode of the jerry springer show. imagine at the end of mgs4 they all sort out there differences and enjoy a spot of Christmas dinner together.