"Kept you waiting, huh."

"Here's to you, Nicola and Bart
Rest forever here in our hearts
The last and final moment is yours
That agony is your triumph."

Big Boss, real name John, also known as Jack, and formerly known as Naked Snake, or simply Snake, was a renowned special forces operative and mercenary commander. He founded U.S. Army Special Forces Unit FOXHOUND, along with the mercenary company Militaires Sans Frontières, and was one of the founding members of the Patriots.

In 1975, legendary mercenary Snake (a.k.a. Big Boss) goes on a mission to extract former allies Paz Ortega Andrade and Ricardo "Chico" Valenciano Libre from a U.S. naval prison facility in Cuba. Paz in particular is Snake's only lead on the whereabouts of "Cipher", an American black ops groupnote  that targeted him during the Peace Walker Incident. Unfortunately, both were captured by Cipher's mysterious XOF unit, who finish interrogating the pair and depart shortly before Snake arrives.

Kept you all waiting, huh.