Big Boss (Operation 747)

Big Boss was the leader of the military group FOXHOUND as well as the keader of both Outer Heaven and an unnamed enemy base three years afterwards.

Operation Intrude N313
Big Boss acted as Solid Snake's commanding officer during Operation Intrude N313. He gave Snake some pointers regarding how to get through various areas. However, he secretly intended for Snake to bring back misinformation and fail in his mission to the East and West, due to his also being the leader of Outer Heaven. However, he underestimated Snake and after the super computer controlling the TX-55 Metal Gears was destroyed, he confronted Snake in the soon to self-destruct facility, admitting his role in Outer Heaven, in a grueling battle before seemingly perishing at Snake's hands. He ultimately survived, although with severe enough injuries to force him to acquire extensive cybernetic parts. This led him to desire revenge against his former subordinate.

Operation 747
Three years later, Big Boss took control of an enemy base in an unknown nation, continuing mass production of various TX-55s, which he also had shipped to various belligerent countries against the United States, and even ordered for the development of a new Metal Gear, Metal Gear 2, and planned to launch its nuclear payload across the world, starting with Tokyo, Moscow, and New York City. He also anticipated for Solid Snake, then promoted to Lieutenant, to arrive, as he intended to exact revenge on Snake for the injuries sustained. Because the cybernetics acted as an extensive life support system, he also was incapable of leaving his command room without risk of getting killed. He eventually discovered that there was a mole among his staff and had the mole, Jennifer, imprisoned, and also had Nick Myer, a FOXHOUND agent under the command of Snake, killed, although not before the latter deduced his weakness. Eventually, he encountered Snake in his command room, and revealed his intentions to Snake. He then entered a duel with Snake. After some damage, however, his cybernetic body morphed into a gargantuan figure, with Big Boss gloating that he has no weakpoints. However, Solid Snake, remembering what Nick Myer told him on his deathbed as well as what an enemy officer stated about his feet being his weakspot, proceeded to lure him out of the command room and placed mines on his feet, killing his treacherous former commanding officer for good. However, the victory was short lived as Metal Gear 2 ended up activated shortly after his death.

Behind the scenes
Big Boss is the main antagonist and supporting character of both the Metal Gear and Snake's Revenge games that were released for the Nintendo Entertainment System. During localization, however, the English manual, due to Konami localization standards at the time, replaced Big Boss's roles as the commanding officer for the player character, the main antagonist of the first game, and the main antagonist of the second game, with Commander South, Colonel Vermon CaTaffy, and Higharolla Kockamamie, respectively.

Unlike in the MSX2 game, Big Boss does not leave a final radio call after being defeated. Elements of this characterization, including his being cyberneticized due to injuries sustained at Outer Heaven, were later obliquely referred to in a radio conversation in the canonical sequel to Metal Gear, Metal Gear 2: Solid Snake.