A sleeper agent employed by The Boss was a former CIA spy that America had placed in the Soviet Union. Due to The Boss's efforts in trying to prevent a nuclear war by communicating and negotiating to Moscow insurgents, America planted him within the OKB-1 Design Bureau, where he sent massive amounts of technical data to NASA about various Soviet projects for them to sabotage or destroy.
By 1960, however, most of the agent's paycheck had been cut by the CIA and pocketed. Seeing that the decreased amount was not enough for him to risk his life over, he defected completely to the Soviet Union, after being turned by The Boss's former comrade, The Sorrow. He attempted to send back forged documents about the Sputnik V, although The Boss noticed an inconsistency in the document, and only discovered the full truth two years later.
- Metal Gear Solid: Peace Walker (mentioned only)