is the name for a series of
mecha in the
Metal Gear series. In the series, a Metal Gear is defined as a
bipedal nuclear weapons-equipped
tank. Usually each game has a new Metal Gear with a different role. The Metal Gears are typically autonomous nuclear launch platforms which the player must destroy in order to save the world and complete the game. Often confronting the latest Metal Gear model is one of the final challenges of each game.