A bipedal
tank, capable of launching nuclear missles from anywhere on the face of the planet. Its earliest incarnation was the Shagohod, a tank which, using rocket boosters and about 3 miles of runway, was designed to launch ICBMs. This was destroyed in 1964 during Operation Snake Eater. Metal Gear as we know it today surfaced in 1995 in Outer Heaven, ironically in use by the man who destroyed its earlier model, Big Boss. After being destroyed, another Metal Gear appeared in Zanzibar land. After Solid
Snake destroyed it and killed his
father, he retired, until 6 years later, the US government decided to build their own model,
REX. Liquid
Snake and the rest of FOXHOUND took control of the Shadow Moses facility until Solid
Snake destroyed it. After that, various models began turning up around the world.