EVA was born in Meridian, Idaho, on May 15, 1936. At some point in her childhood, prior to the start of World War II, she, along with several other children across the world, were taken by the Philosophers and raised in a joint U.S.-Soviet-Chinese facility, receiving spy training at one of the Philosophers' "charm schools," so she could become a "sleeper agent." As a result of this, she was indistinguishable from any other native-born American.