Database Biography: FOX's former prisoner interrogation specialist. His codename while a member of FOX was "Boa." He is a master of torture whose favourite implement is the stun rod. His philosophy regarding tortue is to apply just the right kind in the right amount in just the right location. During his days in FOX, Cunningham was wounded in the leg while on a mission for the CIA, and subsequently retired from the unit. In 1970, he joined Gene's rebellion on the San Hieronymo Peninsula wearing a prosthetic leg. He reveres The Boss as the mother of Special Forces, and feels bitter anger towards the CIA for forcing her to die in a foreign land and for taking control of FOX.
In reality, Cunningham was not loyal to the CIA, but a spy planted within FOX's ranks by the CIA's rival, the Pentagon. His objective was to undermine the CIA's authority as well as to obliterate the base at San Hieronymo Peninsula with a Davy Crockett missile.
Snake encounters Cunningham at both the beginning and near the end of Metal Gear Solid: Portable Ops. To begin with he first meets him in the prison cell he is being held in where Cunningham interrogates h im asking where the rest of the philosopher's legacy is. Snake also encounters him on the lift going up to the control tower where Cunningham flies in line with the lift on a hovering platform (or HORSE). After Snake defeats him, Cunningham reveals that he wasn't with the CIA but the Pentagon and then fire his Davy Crockett missile.