After revealing to Snake that he killed Naomi's parents and became her foster brother out of remorse for his actions, Fox fights Metal Gear REX and its pilot, Liquid, and destroys its radome with a prototype railgun.
In Metal Gear Solid 2: Sons of Liberty, Raiden initially believes him to be alive during Solidus Snake's Manhattan incident before learning that the Cyborg Ninja is actually Olga Gurlukovich.
Hal Emmerich (ハル・エメリッヒ, Haru Emerihhi), nicknamed Otacon (オタコン, Otakon), is Solid Snake's close friend and employee of ArmsTech as well as Metal Gear REX's engineer, who later becomes a founding member of the non-profit Philanthropy organization.
In 2009, he receives an anonymous email from Liquid informing him of the development of Arsenal Gear in the Big Shell and Solidus Snake infiltrates it with SEAL Team 10 to rescue the hostages, including Emma.
She admired FOXHOUND, viewing its heyday as when her uncle and Solid Snake were members, and joined the armed forces after graduating high school, undergoing psychotherapy to prevent attraction to the opposite sex.
The fictional publication In the Darkness of Shadow Moses by Nastasha Romanenko, included as a bonus feature with Metal Gear Solid 2: Sons of Liberty, states that Snake and Meryl escaped together.
While this has caused him to have frequent spells of colds and diarrhea and poor combat performance compared to his squad mates, he is immune to Liquid Ocelot's ability to directly attack soldiers' nanomachines.
His special abilities include the psychic powers of psychokinesis and telepathy, which in a fourth wall-breaking scene allows him to identify certain games on the player's memory card and "move" the controller by making it vibrate.
Three years later, during the 1991 uprisings in Iraq, she fled to a Kurdish refugee camp, where Big Boss noticed her abilities and brought her with him to the United States, where she received counselling and deprogramming to remove her brainwashing.
[82][83] In Metal Gear Solid, Sniper Wolf and Liquid Snake's group go rogue during the Shadow Moses Island incident, taking hostages and blackmailing the U.S. government with a hijacked walking tank while demanding that Big Boss' corpse be handed over to them.
[108] In his later years, he abuses his position as the DARPA chief while conspiring with Kenneth Baker and Jim Houseman,[109] but is tortured for information by the rogue FOXHOUND, killed by Revolver Ocelot,[110][111] and impersonated by various individuals in the original Metal Gear Solid games.
Jim Houseman (ジム・ハウスマン, Jimu Hausuman) is the United States Secretary of Defense, who observes the situation on Shadow Moses Island during Metal Gear Solid aboard an AWACS command plane.
[118] During Sons of Liberty, Solidus turns against the Patriots and poses as Snake while instigating a terrorist takeover of the Big Shell with Revolver Ocelot and Olga Gurlukovich in order to form his own nation to leave his impact on the world.
EVA's character model was based by Hideo Kojima on a gravure idol he liked ("○○里", a possible reference to Chisato Morishita (森下 千里)),[175] and her personality traits were inspired by Fujiko Mine from Lupin III.
Capable of dislocating his joints at will, he has enhanced mobility and wields two crossbows, the Little Joe and the William Tell, coating their bolts in the venom of the Brazilian wandering spider,[188] setting them on fire, or outfitting them with explosives.
Ivan Raidenovitch Raikov (イワン・ライデノヴィッチ・ライコフ, Iwan Raidenovitchi Raikofu, Иван Райденович Райков) is a high-ranking officer within Groznyj Grad who is implied to be Colonel Volgin's secret lover and has colonel-class authority despite having a rank of major.
The United States government operated on him to stabilize his body temperature, eventually putting him in a Sneaking Suit filled with liquid nitrogen, with several needles in his head to vent excess heat.
He is present when MSF is attacked by the XOF forces, though Metal Gear Solid V: The Phantom Pain confirms that Emmerich managed to escape and developed a cybernetic lower exoskeleton to walk again.
Emmerich is accused by Diamond Dogs of murdering Strangelove and facilitating the attack on MSF for Cipher in exchange for his own safety, and is found guilty of triggering a new mutation in the vocal cord parasites that results in Venom Snake being forced to execute his own men.
Paz hijacks Metal Gear ZEKE and attempts to launch a nuclear warhead at the American East Coast, with the intention of framing MSF as being an extremist cult under Cipher's orders.
Trained in swordsmanship by his father, who was killed by a former pupil under orders from a local drug cartel, Sam inherited his "Murasama" sword and became a vigilante and mercenary before being forced into service to Desperado by Armstrong.
Snake engages in missions in Afghanistan and Central Africa as he recruits several companions and deals with the Cipher organization's remnants, ultimately confronting Skull Face and the XOF strike force, as well as Huey Emmerich and White Mamba.
The commander of the mysterious XOF special-forces unit, his identity and nationality are initially unknown, and he claims to have forgotten his native language, though can speak Hungarian and is later revealed to have been born in Transylvania before it was returned to Romanian control.
By The Phantom Pain, Skull Face has fallen out of favor with Cipher and exiled to Africa, where he revives a project designed to weaponize a parasite as a form of ethnic cleansing, as it targets and kills speakers of different languages.
He uses the project to develop a strain of vocal-cord parasite that targets English speakers, intending to unleash it against Cipher and start a new Cold War by giving easy-to-make nuclear weapons to minority groups.
Quiet (クワイエット, Kuwaietto) is a sniper who appears in the prologue as part of a team attempting to kill Big Boss when he is discovered by Cipher, but suffers severe third-degree burns and is kept alive through parasite therapy that gives her the ability to photosynthesize light, breathe through her skin, cloak herself, and move with superhuman speed and strength.
During the Big Shell incident, Solidus Snake leads the Sons of Liberty (自由の息子達, Jiyū no Musuko-tachi), consisting of Revolver Ocelot, Olga Gurlukovich and the Dead Cell members, to take over Arsenal Gear.
In Metal Gear Solid 3, Volgin uses the Philosopher's Legacy to create the fortress Groznyj Grad (グロズニュ・グラード, Gurozunyu Gurādo, Грозный Град) within the Soviet branch, with the Shagohod and The Boss as collateral.
Originally a support network for FOX, XOF secretly continued as a black ops division of Cipher before having gone rogue, as shown when they remove any identifying markings from both personnel and equipment in Ground Zeroes.
Militaires Sans Frontieres (国境なき軍隊, Kokkyō Naki Guntai, translated as "Soldiers Without Borders") is Naked Snake's mercenary group in Metal Gear Solid: Peace Walker.