There is evidence located in MGS4 dialogue that suggests that Liquid Snake was named for his father, Big Boss a.k.a John Doe. (That's seriously Big Boss' name.)
John
Yes
no
Solid Snake's real name is David.*SPOILER*His real name and true origin are revealed during Snake's confrontation with Big Mama (EVA) in Metal Gear Solid 4: Guns of the Patriots.
yes
yes
Yes. Sea snakes are real and venomous.
The liquid form of mercury is the real name for the substance known as quicksilver.
Yes it is david hayter, he was named after the guy who voiced him in all the metal gear solid games.
Snakes are of the suborder Serpentes in the order Squamata in the class Reptilia. so the scientific name is OPHIDIA.
it is a legend but it cud be real there is evidence of it being real. i believe it. why not?
If you mean vampires, they are not real. Vipers are a family of venomous snakes.