Escaped prisoner (Cuba)

In 1974-1975, a prisoner was held at the United States Naval Facility in Cuba, before escaping and eventually being rescued by Big Boss and the Militaires Sans Frontières.

Biography
The prisoner ended up imprisoned under unknown circumstances. Shortly after the commander of the Militaires Sans Frontières Big Boss's arrival at the facility, the prisoner managed to escape from his cell and went into hiding at an area in the base. Two of the personnel discovered his escape and went on a search for the prisoner, vowing to "leave no stone unturned." Big Boss overheard this exchange while conducting reconnaissance of the base, and believed the prisoner to be Chico. After sighting him inside of a storage shack, he ambushed the guards and knocked them out, and proceeded to rescue the prisoner, mistaking him for Chico (as he had personally gone to the base to rescue both Chico and Paz Ortega Andrade). After a narrow escape from the base, Big Boss brought the prisoner over to Mother Base. Kazuhira Miller, Big Boss's subcommander, immediately realized the man was not Chico and that Big Boss retrieved the wrong prisoner, although he nonetheless was impressed with the prisoner's formidable build, and decided to recruit him into MSF.

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This prisoner was a character in the Night gameplay demo for Metal Gear Solid: Ground Zeroes, first showcased in TGS and eventually given an English translation.