Quiet is the main female anti-hero in Metal Gear Solid V: The Phantom Pain. She initially appears as part of XOF’s strike force sent to a hospital in Cyprus to kill Big Boss. She kills the doctor and nurse, before setting her sites on “Ahab”-in fact, Big Boss’s double, Venom Snake. Fortunately, the real Big Boss-“Ishmael” is able to subdue her with lighted ethanol, causing her to get badly burned. She then dives out the window, causing Big Boss to quip: “We gave her a light. She took the short way down.”
After the incident, Quiet is treated with the mysterious “Cover” parasites that cover a lot of the supernatural characters in MGSV. This gives her increased reflexes, the ability to ‘cloak’ herself, super-speed She is also given a strain of the deadly English langauge virus, which in effect, makes her unable to speak english; or else she will infect others (and possibly herself as well). It also gave her the ability-despite her extensive respiratory injuries to breath through her skin in a form of photosynthesis, and also drink water through it as well. She also had the ability to manifest strange markings around her eyes. This allowed her to become an exception sniper as well.
She’s then sent back out into the field by XOF, first eliminating loose ends around the development of Metal Gear Selanthropus, and then she encounters Venom Snake. Venom is able to quickly outmaneuver her and knock her out, but decides to spare her life and bring her to the base.
This doesn’t sit well with the now extremely paranoid Master miller, although Ocelot is mostly cool with it. Surprisingly, she saves Big Boss and the Peqoud unit helicopter from an XOF jet traveling at mach speed.
Although initially put under heavy guard by Miller and constantly kept in the Brig on Mother Base (although she is able to escape any time due to her abilities), she eventually begins to accompany Venom Snake on missions, forming a bond with him, and a bit of an unspoken (literally) romance. Miller however remains suspicious of her true motives.
However, she eventually leaves Mother Base so she cannot infect the men, especially after an outbreak of the parasite breaks out on the Quarantine platform due to the manipulation of Huey Emmerich. She’s captured by soviet soldiers, but is able to defeat them easily-and then teams up with Venom Snake against a heavy force of tanks, ATVs and Soviet choppers. Eventually, the two escape and try to find cover during a sandstorm, and evade patrols. However, ironically-Venom Snake is bitten by an poisonous actual Snake. Quiet is forced to speak English to rescue Venom, telling Peqoud their coordinates.
When recovering due thanks to a timely antivenom (heh) Venom Snake awakes to find Quiet has vanished-apart from one casette:
“I did not choose to be Quiet. I wanted to express my feelings to you. If only we shared a common tongue. Vengeance is what drove me to them… The only language left to me, revenge. But the words we shared… No, that was no language at all. That is why… I chose the language of gratitude instead, and go back to silence. I am Quiet… I am… The absence of words.”
Quiet’s fate is left unknown-it’s unclear if she dies of the virus or what becomes of her in later decades.