Liquid Snake, born as Eli, is a primary antagonist in the Metal Gear Solid series. He is the twin brother of Solid Snake, sharing the same genetic origins as part of the Les Enfants Terribles project. Liquid is known for his charismatic leadership and intense rivalry with Solid Snake, seeking to surpass his brother and rebel against his predetermined fate. His actions and motivations significantly impact the story, making him one of the franchise’s most memorable villains.