Metal Gear Ray is a fictional mecha from the Metal Gear Solid video game series, first appearing in Metal Gear Solid 2: Sons of Liberty. Unlike other Metal Gear units, Ray is designed to combat similar mechs and is characterized by its amphibious capabilities and advanced weaponry. It plays a significant role as an antagonist unit, often piloted or unleashed by enemy forces to challenge the protagonist, Solid Snake, and other characters. Ray symbolizes escalating military technology and serves as a major boss in the series.