Metal Gear Solid 3: Snake Eater - EVA

EVA, also known as Tatyana, and later known as Matka Pluku, and Big Mama, was a spy who fought alongside Naked Snake during Operation Snake Eater. While posing as a KGB agent, she actually worked as a spy for the Chinese People's Liberation Army, tasked with obtaining the Philisophers' Legacy. She later became the surrogate mother of Solid Snake and Liquid Snake.