Ray Metal is a fictional bipedal mecha featured in the Metal Gear series, notably in 'Metal Gear Solid 2: Sons of Liberty.' Unlike previous Metal Gear models, Metal Gear Ray is designed for amphibious operations and is equipped to combat other Metal Gear units. It is piloted by various characters throughout the series and serves as a significant threat to the protagonist. Its sleek, organic design and advanced weaponry make it a memorable adversary and a symbol of escalating arms technology within the story.