Metal Gear Solid 4 family tree

Liquid Ocelot
First appearance: Metal Gear Solid (PSone)
Nationality: Russian/American
Affiliation: Outer Heaven
Looks like: Sam Elliot
Voiced by: Patric Zimmerman
Biography: Two villains for the price of one. In MGS1, Liquid Snake (yet another Big Boss clone) was the villain and Revolver Ocelot was his right hand man - now Liquid is Revolver Ocelot’s literal right hand (and arm) man. When Ocelot lost his arm in MGS1, he had the deceased Liquid’s arm grafted on instead. When Solid was near, Liquid could possess Ocelot temporarily, but the possession became permanent at the end of Metal Gear Solid 2, creating a new entity known as Liquid Ocelot.
What he’s doing in MGS4: Liquid Ocelot has raised an army equivalent in manpower to the US Army - and he’s using it to topple the world. Trust us; this will all make a lot more sense if you keep reading.