Liquid Snake

"We're losing our place in a world that no longer needs us. A world that now spurns our very existence. You should know that as well as I do. After I launch this weapon and get our billion dollars, we'll be able to bring chaos and honor back to this world gone soft."

- Liquid Snake

Liquid Snake, real name Eli, also known as White Mamba, McDonell Miller, or simply Liquid, was the leader of FOXHOUND during the Shadow Moses Incident. He was cloned from Big Boss's DNA as part of the Les Enfants Terribles project, along with his brothers Solid Snake and Solidus Snake. Liquid was led to believe that he had been created in order to express Big Boss's recessive genetic traits, and as such, was "inferior" to Solid Snake who supposedly had received Big Boss's dominant genes. Liquid therefore held a strong resentment towards Solid and wished to defeat him in combat, reclaiming what he felt was his birthright, and thus proving his superiority.

Possessing an IQ of 180, Liquid spoke seven languages fluently, including English, Spanish, French, Malay, Arabic and Kikongo. His main language, English, was also spoken with an English accent of the Received Pronunciation dialect during adulthood, and a London dialect during his childhood. He was almost an exact double of Solid Snake in terms of appearance, with the only distinguishable feature being his darker skin tone and fair hair color. He also had a tattoo on his left arm, which resembled the Rod of Asclepius, but with a sword in its place and with the words "Temptation Revelation."

Background
An adult Liquid Snake was foreseen in Elisa and Ursula's prophetic vision in 1970, as the son of Big Boss that would "bring the world to ruin."

In 1972, Liquid and Solid were born as a result of the secret "Les Enfants Terribles" project designed to create the perfect soldier, using the genes of Big Boss, who was at the time considered the "Greatest Warrior of the 20th Century". Using the process of somatic cell nuclear transfer, eight clone embryos were created by inserting Big Boss's DNA into enucleated egg cells, donated by a healthy Japanese woman. By utilizing the Super Baby Method, the embryos were then implanted into the womb of a surrogate mother, with six of the babies eventually being aborted to promote growth in the remaining two. The two clones were also modified on the genetic level, with one clone expressing Big Boss's dominant genetic traits, and the other, his recessive traits. Nine months later, the twins were born and would later receive the codenames of Solid Snake and Liquid Snake. A third clone was also later created who inherited an identical genetic code to Big Boss. Liquid was later led to believe that he was the result of Big Boss's "inferior" recessive traits.

Early life and career
In 1974, the Patriots (Cipher) decided to use the two sons as an insurance policy against Big Boss, should he continue to oppose the organization. Cipher's business associate Kazuhira Miller was made aware of this plan.

In 1976, after the Les Enfants Terribles project was shut down by ATGC, Eli was abandoned by Cipher, and shipped off to England, UK, which was also Zero's birthplace. In 1979, Eli escaped his handlers while in Africa and disappeared, later becoming leader of a group of child soldiers.

A 12 year old Eli, primarily known by the moniker "White Mamba," encountered Venom Snake in 1984. Eli and his band of child soldiers had taken up residence in Masa Village, and Venom Snake was sent to extract him, in hopes of having the group fall apart without their leader. He encountered Eli sitting on a throne-like garden chair with the head of a pig on a platter (evoking imagery used in the novel Lord of the Flies). Snake subdued Eli and brought him back to Mother Base, confused by Eli's inherent hostility towards him. Once at Mother Base, Venom Snake playfully slapped Eli on the back - angered by this display of apparent friendship with the man he hated the most, Eli stole Snake's knife off his back and attacked him with it. Snake easily subdued him once again using CQC and dislocated his arm, later popping it back into place and leaving him to hopefully calm down. As a child on Mother Base, it was planned for Eli to receive an education and be sent back into the world to become a useful citizen. However, his headstrong and irritable attitude made this process next to impossible.

Later, as Venom Snake returned to Mother Base from a day in the field, he witnessed Eli speaking with a fellow child soldier. The child mentioned his "papa" to Eli, throwing Eli into a fit that he would ever look up to an adult. A Diamond Dogs soldier attempted to reprimand him, but soon found his own knife stolen and held at his neck by the enraged child. Ocelot attempted to confiscate the knife, but was met with resistance and was forced to perform CQC on him. After losing the knife Eli still put up his fists, but found himself quickly beaten back down. Ocelot then sent him off with a disapproving look, fully aware of the child's true origins.

At some point in time, he met up with Venom Snake and Ocelot again, the latter telling him that his father "[wasn't] around." During the encounter, Eli challenged Snake to a fight. After a brief struggle, Eli was thrown to the ground by his older opponent. Unwilling to submit, he pinned Venom Snake to a wall using a chair, then proceeded to draw a knife in attempt to stab him. Venom Snake disarmed Eli and threw him to the ground, driving the same knife into the ground beside Eli's head. After being subdued, Eli was brought back to Mother Base by Diamond Dogs, while his child soldiers are brought back to join the group as well. He was eventually subjected to a DNA test, which confirmed that he and Venom Snake were not a genetic match. This later turned out to be a foreshadowing to the fact that Venom Snake actually was a "phantom" of Big Boss and therefore had different DNA than him.

During the final confrontation between Venom Snake and Skull Face's forces, Eli had smuggled himself onto a Diamond Dogs helicopter in an attempt so see some real action, much to the chagrin of Miller. Unbeknownst to either Venom Snake and Skull Face, Tretij Rebenok, the boy who would become Psycho Mantis, let himself be used as a conduit by Liquid to hijack Metal Gear Sahelanthropus; in order for Eli to enact his vengeance against Venom Snake. Eli influenced the Metal Gear to chase down Venom Snake, but the Metal Gear was stopped by a narrow gap in the canyon it was running in; forcing Eli to switch the Metal Gear into a more humanoid configuration and later causing further mayhem with what seems to be a plasma whip. Wreaking havoc on Skull Face's forces, the Metal Gear decidedly attacked Skull Face himself, causing him to become trapped under debris. Eli would then focus his efforts on attempting to kill Venom Snake by using the Metal Gear. After a prolonged battle, Venom Snake was able to incapacitate the Metal Gear thus removing Eli's control over it. However, Liquid managed to receive the remaining parasite vial from Tretij Rebenok, who had intercepted it before it could be destroyed when Venom Snake discarded it.

Diamond Dogs extracted Sahelanthropus and repaired it back on Mother Base. However, he began to plan an escape for the various child soldiers at Mother Base, causing an "accident" involving pipes that killed one of the child soldiers, Ralph. While Venom Snake went out in search of the missing children, Eli began organizing a revolt against the adults on Mother Base, having the children construct make shift weapons in order cause trouble for the mercenaries. Part of his planned involved taking advantage of Miller's new found responsibilities for the children, allowing him and his band to avoid being put in containment for bad behavior on the base until Miller was relieved of his duties as the children's caretaker by Ocelot, having failed to keep the situation contained. He was eventually caught and placed under surveillance. Unfortunately, Eli had fully anticipated this and proceeded to escape the interrogation room with the aid of Tretij Rebenok and the Metal Gear in the middle of an interrogation session. Eli then boarded the hijacked Metal Gear and left, although not before telling his "father" that he's not like him, and that he didn't need him anymore. The two would take the rest of Eli's child soldiers via helicopter back to Africa, establishing a new stronghold that was likened to the Lord of the Flies. They made it 50 miles inland upon arriving at Africa before they were forced to land the hijacked chopper due to it running out of fuel. Eli and his child soldiers then deliberately tied the chopper pilot to his seat with vines and duct tape to ensure the Diamond Dogs, whom he anticipated would pursue him, found the pilot, sending a message that he intends to fight them. Unbeknownst to him, however, XOF, now reintegrated with Cipher, were also pursuing him and his "flying giant." To prepare for Venom Snakes arrival, Eli and his soldiers set up traps all over the island and had banished the island's population.

Learning the whereabouts of Eli and their stolen Metal Gear, remnants of the XOF were deployed on the island to reclaim their investment. Slowly approaching Sahelanthropus, an XOF markman attempted to snipe Eli while he was in the cockpit of the Metal Gear, only to be saved by Tretij Rebenok. A full blown firefight ensued, resulting in XOF initially pulling out and Venom Snake intervening. Eli had infected the area with the parasite, thus forcing everyone present, including Eli, Venom Snake, and Ocelot, to wear breather masks and hazmat suits, declaring that he'd die as he wished so long as it ensured he broke the curse of his heritage.

After being defeated, Eli lamented that his fate was written into his genes as Venom Snake looked over him. As Diamond Dogs prepared to sterilize the entire island with napalm, Venom Snake pointed his gun at Eli, before deciding against it. He then left Eli to his fate, with the latter pointing the gun to his own head, implying he was intending to commit suicide. However, Tretij Rebenok stopped him, and instead extracted the parasites from him and convinced Eli to leave with him. Eli vowed that it wasn't over yet.

Adulthood
In 1990, Liquid joined the British Special Air Service, becoming the youngest person in history to join its ranks excelling at parachuting, Rapelling, scuba diving, free climbing, and use of small arms and military vehicles. During the Gulf War in Iraq, he was assigned to an SAS unit to track down and destroy mobile Scud missiles. In truth, he infiltrated the Middle East as a sleeper agent for the British Secret Intelligence Service, but he was taken prisoner by the Iraqis and declared missing in action. In 1994, he was rescued by the U.S. Government.

After Solid Snake defeated Big Boss during the Zanzibar Land Disturbance in 1999, Liquid's hatred for Snake grew, since he had been denied the chance to exact his revenge on the father he believed had chosen him to be the inferior clone. He was eventually reunited with his old ally Mantis and the two joined FOXHOUND in 2000, with Liquid becoming its squad leader after Snake had already retired from the unit. Despite codenames having previously been abandoned under Roy Campbell's command, new members of the unit adopted the system once more. In addition, Liquid's real name was highly classified.

In February 2005, FOXHOUND subordinate Revolver Ocelot convinced Liquid Snake to launch an insurrection against the U.S. Government, during a weapons testing exercise on Shadow Moses Island. Along with the other members of FOXHOUND and the Next-Generation Special Forces, they seized control of the island's nuclear weapons disposal site and Metal Gear REX. Calling themselves the Sons of Big Boss, the group took DARPA Chief Donald Anderson and ArmsTech President Kenneth Baker as hostages, and threatened the White House with a nuclear strike unless Liquid's demand was met: the body of Big Boss. The incident was deliberately brought about to coincide with the signing of the START III Accord between the U.S. and Russia: exposing REX's existence would put the signing of the treaty in jeopardy, erode confidence in America’s commitment to non-proliferation, and create international turmoil.

After Anderson died during Ocelot's interrogation, Liquid arrived at a setback, having failed to learn the DARPA Chief's activation code for REX both due to the botched interrogation and Psycho Mantis being unable to retrieve the code via his mind-reading abilities. Unable to back up his threat of a nuclear strike, Mantis suggested to Liquid that Decoy Octopus disguise himself as an imprisoned Anderson, to await rescue from U.S. forces. Liquid anticipated that his clone brother Solid Snake would be sent in to eliminate the terrorist threat, and intended to trick him into activating REX for them, as a backup plan. Liquid also arranged for McDonell Benedict Miller to be murdered at his home so that he could assume the role of Snake's former mentor and influence his actions via Codec, after tricking Colonel Campbell into allowing him onto the mission support staff.

Alerting the Genome Soldiers of Solid Snake's imminent arrival on the island, Liquid headed out to intercept two F-16s that had been launched by the Pentagon as a diversion. Using a Hind D gunship, provided to him by Sergei Gurlukovich, Liquid successfully shot down the two fighters with his uncanny piloting skills. He then issued a threat to the U.S. Government, warning that he would launch the nuke should they attempt a similar assault. While impersonating McDonell Miller, Liquid then made contact with Snake and offered his support to the unassuming operative. However, Liquid's plans were further complicated when Decoy Octopus unexpectedly died from unknown causes, after coming into contact with Snake. When Baker died under similar circumstances, Liquid set out to discover the cause of the mysterious deaths. Nevertheless, he ordered Ocelot and Vulcan Raven not to kill him, wishing to further see what Snake was capable of. During this time, Liquid secretly observed directly Snake's actions and reactions to killing his comrades.

When Solid Snake was later captured by Sniper Wolf, Liquid intended to obtain a DNA sample from him, in order to learn more of the Genome Soldiers' various mutations. After Snake awoke from unconsciousness, Liquid introduced himself to his brother, meeting him face-to-face for the first time. He then gave the order to continue REX's launch preparations as planned, due to U.S. government's lack of response to his demands. He suspected that they must have an ace up their sleeve, and that there was may be a spy among his ranks, questioning the motives of the mysterious Cyborg Ninja that had managed to kill twelve of his men. He left Ocelot to interrogate Snake, but warned him not to make the same mistake as he did with the DARPA Chief.

After Snake managed to escape from the medical facility, Liquid attacked him with the Hind D as he attempted to cross over the communications towers. The Russian gunship menaced Snake several times before a final showdown on the roof of one tower. Following an intense battle, the Hind eventually went down in flames due to stinger missiles fired by Snake, though Liquid was able to survive. Continuing his Master Miller impersonation, he then tricked Snake into focusing on his mission support adviser Naomi Hunter as an enemy spy. Utilizing the distraction, Liquid ultimately deceived Snake into activating Metal Gear REX with the ArmsTech President's PAL key, since he had been unable to do so without it.

Through information supplied by a spy in the Pentagon, Liquid learned that Decoy Octopus's and President Baker's deaths had been caused by FOXDIE; a DIA assassination virus with which Solid Snake had secretly been infected. He then added a FOXDIE vaccine to FOXHOUND's demands, along with one billion dollars to help correct the Genome Soldiers' mutations, using information gathered from Big Boss's DNA. Deciding to play the superpowers against one another, rather than take them head on, Liquid disregarded Ocelot’s suggestion of Chernoton, Russia, as a target, and instead chose Lop Nor, China, which was the location of a nuclear test site. Since firing a nuke at a major population center would make future negotiations impossible, an attack on a nuclear test site could still be concealed from the public. The U.S. would be forced to confess some of its state secrets to prevent a retaliatory strike from China, after which Liquid could sell the nuclear weapon system to the highest bidder. Not only that, but with Metal Gear REX in his possession, Liquid planned to join forces with Colonel Gurlukovich's forces, and turn Shadow Moses into a new "Outer Heaven." With these vast resources at his command, Liquid would drag the world into a Third World War, fulfilling Big Boss's dream of a world which always had a place for soldiers. Liquid, resuming his Miller disguise, also advised Snake to change the PAL key, although by the time Snake managed to change it to the red PAL key, he almost blew his cover in excitement that Snake was getting close to activating REX, although he summarily covered it up by claiming that he's just excited that Snake's about to succeed in the mission.

After Solid Snake unwittingly activated Metal Gear REX, Liquid revealed his deception as Master Miller to Snake and locked him within the launch control room. Having no more use for Snake, he released nerve gas into the room, though Snake managed to escape with Otacon's help. Eventually cornered by Snake, Liquid revealed the existence of FOXDIE to him, and that the Pentagon wished to recover REX and the Genome Soldiers' remains without damage. Expressing his hatred for Big Boss, Liquid told Snake that he intended to destroy their father by surpassing him, and escaped into REX's cockpit to engage Snake in battle. However, Gray Fox interrupted the battle, saving Snake from being crushed by Liquid, with Liquid vowing to "send [Fox] back to Hell" in retaliation. Snake and Fox then escaped to cover and conversed while Liquid was firing everywhere, looking for the two. He finally found them and open fired, focusing on Gray Fox first. Fox managed to attack REX with his armament, but Liquid managed to shoot him once, and slice his left arm off with the laser on REX. Pinning Fox down, he mocked the two, asking Snake if he was going to help him out at all, but Fox then destroyed the radome, exposing Liquid. Liquid, although impressed at Gray Fox's destruction of the radome, nonetheless killed Fox shortly thereafter by stomping on him with REX. He and Snake then went at it again. After Snake managed to score a few hits in the cockpit, REX was rendered inoperable, but the explosion knocked him out.

Having survived the explosion, Liquid dragged Snake to the top of REX, and directly threatened the Pentagon via Snake's Codec implant. As Snake regained consciousness, Liquid told him that he wouldn't be killed so long as Snake lived, and even with the destruction of REX, his fight was not over yet. He explained to Snake that his ultimate goal was to give soldiers a purpose again, especially since soldiers continued to be abused by hypocritical politicians and political gambits. He also deduced that Snake, despite his protestations, enjoyed the thrill of battle and would welcome the prospect of a war-torn world, which he intended to create. Liquid then revealed to Snake the history of their own creation, as well as that of the Genome Soldiers, and the reason why they needed Big Boss's remains. He then revealed that while Snake was still unconscious, he had placed a prone Meryl Silverburgh on top of REX as well as wiring her to a timed explosive. With a bombing raid on the facility, ordered by the U.S Secretary of Defense, due to commence shortly, Liquid and Snake battled barehanded atop REX's ruins. Snake eventually managed to knock Liquid off to the floor far below.

Though it seemed that Snake was victorious, Liquid survived the fall from REX. A car chase ensued as Liquid raced after Snake and Meryl by jeep as they were trying to escape from the impending nuclear strike via a supply tunnel. Using a FAMAS rifle to attack, Liquid was kept at bay by Snake's machine gun fire, until both jeeps crashed at the tunnel entrance, just outside the facility. Minutes later, Liquid emerged from the wreck of his jeep, bloody and wounded but still alive. He staggered towards Snake and Meryl, FAMAS in hand. Just as he was about to kill them, as they were both trapped underneath their vehicle, Liquid suddenly lurched backwards and collapsed to the ground, succumbing to the FOXDIE virus.

After death
Afterwards, Revolver Ocelot informed Solidus Snake that Liquid had wrongly believed himself to be the inferior one right until his death. Solidus had Liquid's body recovered, and the right arm transplanted onto Ocelot, replacing the one he had lost to the Cyborg Ninja. Afterwards, Liquid's corpse was put into cold storage.

Meanwhile, Liquid's corpse was stolen by Solid Snake to fake his own death in 2007 and eventually ended up interred and later exhumed for DNA testing, which was mistakenly used to verify Snake's death in 2009. By 2007, Liquid's personality had been implanted into Revolver Ocelot's mind. However, the presence of Liquid's transplanted arm resulted in an imbalance in Ocelot's psyche, resulting in Liquid manifesting sporadically. Liquid's personality presumably achieved full control over Ocelot's mind in 2009.

By 2014, Liquid's persona had completely fused with Revolver Ocelot's and created the new entity Liquid Ocelot despite the replacement of his transplanted arm with a cybernetic prosthesis. Being his doppelgänger, Ocelot retained Liquid's ambitions to set off to bring about his own vision of Outer Heaven as well as the destruction of the Patriots. During this time, a DNA chip containing Liquid's genome was used by Ocelot during a failed attempt to hack into the SOP system. It was revealed by Naomi that Liquid and Snake were not 100% identical genetic matches, even though they were similar enough to fool a DNA testing, which is why FOXDIE only affected Liquid in Shadow Moses but spared him. Meanwhile, EVA used body parts from Liquid and Solidus to reconstruct Big Boss. Liquid's likeness, alongside that of his brothers and father, was later displayed in a Mt. Rushmore-like feature on Outer Haven 's hull, at Shadow Moses Island. Liquid's persona ultimately faded away during Ocelot's final battle with Solid Snake.

Personality and traits
Liquid Snake displayed an arrogant and extroverted attitude in stark contrast to Solid Snake's more calm and collected personality. He was described as having an "attitude problem" by Miller. He was incredibly resentful and bitter towards Big Boss, believing he had been knowingly chosen by the man to be his "inferior" clone, whereas his brother Snake was endowed with "superior" genes. This drove him to surpass his supposed genetic destiny, and in essence, his father. His hatred was such that when Snake compared him to the then-detained Naomi Hunter regarding his motives, Liquid didn't even deny it. When he was younger, his hatred for his father was intense enough that he reacted violently to even the mere mention of the subject of fathers, as evidenced by his becoming threatening to one of the soldiers in his squad when the latter relayed to him how his own father was doing with his work in the mines, and was also severe enough that it overpowered both Skull Face and Volgin's control over Tretij Rebenok (both of whom did so due to their mutual hatred of Big Boss). In addition, he bore hatred towards the Patriots as he had hunted them down for some time, and vowed to deal with them in such a manner as to "cause even the reaper's stomach to turn." He was also shown to have a lot of self-loathing to the extent of being suicidal in his younger years, as evidenced by his comment about freeing himself from his cursed heritage when about to fight Venom Snake, his lamentation about his fate being written into his genes, as well has his deeply considering suicide until he was convinced otherwise.

As a young boy, Liquid despised adult authority due to his handlers treatment of him and broke away from them while in Africa to form his own personal militia. He also had a scar on his left eyebrow. When Venom Snake captured him, Liquid didn't say a word to him and rudely refused Venom Snakes offers of help. He also hated being treated as a kid, as when Venom Snake patted him on the back, Liquid almost immediately tries to kill him by taking his knife, only to have his right arm dislocated, which Snake immediately put back after lecturing him about respect and loyalty. Even as a young child Liquid showed psychopathic behavior, laughing in delight as he escaped Mother Base with Sahelanthropus and obsessively focusing his life on killing Venom Snake. The destruction Liquid caused while telepathically controlling the Metal Gear shocked even Skull Face himself. He also was bad at understanding basic biology.

Due to his genetic engineering, being endowed with Big Boss' superior soldier genes, Liquid had enhanced strength, speed, durability, knowledge and skills in combat. He's better than the average soldier easily disarmed and pinned one to the ground, being the commander leading a bunch of child soldiers raiding several villages, he even held his own against venom snake in ground combat, dodging and countering his cqc attacks, dodging his gunfire, shrugged off his cqc attacks, and even pinned him to a metal wall with a plastic chair.

As he got older his fighting and physical prowess has improved even more, he became the youngest member of the Special Air Service excelling at parachuting, rappelling, Scuba diving, free climbing, and use in small arms and military vehicles, became the squad commander of foxhound, had an IQ of 180, spoke seven languages (English, French, Spanish, Malay, and Arabic speaking it like a native) he even fought on par with Solid Snake, another son of Big Boss with the upper hand, he can pull of many acrobatic maneuvers, his resilience was greater than snakes he got up and still kept fighting him, jeep chased and was shooting at the same time, and he even nearly killed him getting up in sub zero Alaskan weather after a jeep crash and nearly shot him but FOXDIE kicked in killing him slowly, he resisted but succumbed eventually.

In contrast to his twin brother and their father, Liquid showed an apparent lack of compassion and loyalty to his allies and only seemed to view them as pawns at best. After Snake defeated Psycho Mantis and Sniper Wolf, Liquid thought they were pathetic and foolish for not fighting more effectively. In addition, before Vulcan Raven fought Snake for the final time, Liquid told him "[his] existence [was] no longer needed in this world." However, he did seem to possess some skewed sense of pride and honor by letting Snake live to fight him unbound and unarmed in a one-on-one duel (presumably in an attempt to feed his ego). Despite his nature, Liquid was shown to be merciful as he let Meryl live when Ocelot offered to kill her. However, he did this moreso to use her as a pawn against Snake.

In large part because of his upbringing and his knowledge of how he was conceived, he harbored a belief that he should follow what his genes told him, under the hopes that he would surpass his genetic destiny. He also largely believed for the same reasons that he couldn't become anything else than a soldier, and wouldn't have the right to even possess a real name, reacting angrily at one point when Snake claimed that he did have a name other than his codename. His loathing of his real name has been there since his youth, as he reacted violently when one of his fellow soldiers addressed him by his real name.

Liquid was an especially adept pilot; as demonstrated by his piloting of a Hind D during a blizzard when the gunships IR and navigation systems were nonfunctional, especially in combat against two F-16s, as well as co-pilot it from within the weapons operator's cockpit, which Revolver Ocelot attributed to the successes of the "Les Enfant Terribles" project. He would later use the same chopper to combat Snake.

Liquid was skilled at disguising himself, as evidenced by his deception as Master Miller to trick Snake and the mission control into unwittingly activating REX with the PAL key. However, he did have trouble maintaining his disguise when undergoing intense emotions. This was demonstrated twice during the Shadow Moses Incident: the first time was when he reacted with anger over Ocelot leaving a time bomb among Snake's belongings when he escaped (causing him to narrowly stop himself and regain his composure when he came too close to saying too much). The second time was nearing the end of the mission, having a suspiciously excited reaction when Snake managed to heat up the key, causing Snake to wonder why "Miller" was feeling oddly happy about it.

Liquid often displayed high levels of endurance, having survived numerous, seemingly fatal, events over the course of his life. This included:
 * As a kid, he could take a lot punishment, including several CQC strike combos and slams from Venom Snake, but kept on fighting.
 * His body was able to withstand freezing temperatures for several minutes with little clothing or protection.
 * He was shot down in the Hind D, the explosion of which Snake could see from the top of the communications towers.
 * During the REX battle, Liquid survived the multiple stinger missile hits on the cockpit, and was still inside REX when it finally blew up. The force of that explosion was sufficient to bodily hurl Snake across the room and slam him into a wall. However, once again, Liquid emerged relatively unscathed, dragging Snake to the top of REX's remains for a final fight.
 * At the conclusion of the brawl, Liquid survived a fall of over 10 meters (40 feet) from the top of REX, when he had claimed beforehand that such a fall would kill even Snake.
 * Immediately afterwards, Liquid gave chase to Snake and Meryl, eventually causing both vehicles to crash. Dragging himself from the wreckage, staggering but still alive, he attempted to finish off Snake, but finally succumbed to FOXDIE before he could.

Japanese heritage
Being a somatic cell clone of Big Boss, Liquid Snake inherited mitochondrial DNA from the Japanese egg donor of Les Enfants Terribles. Liquid and Solid Snake were also somewhat aware of their Japanese heritage. During the Shadow Moses Incident, Liquid almost let slip his true identity, while posing as Master Miller, when discussing Snake's and Vulcan Raven's common ancestry.

Unconfirmed history
The Twin Snakes were born as a result of a ninth batch of clones, in Carlsbad, New Mexico. After Liquid was sent to Great Britain, he experienced a harsh childhood where he received an education and combat training courtesy of MI5.

Similar to his father, Big Boss, Liquid Snake was trained in withstanding torture. He also had the uncanny ability to disguise himself in a multitude of ways, and spent time as a mercenary and assassin, having disdain for service in the military.

His part Japanese heritage, alongside his knowledge of Arabic, allowed him to pass as half Turkish and half Caucasian during his sleeper agent duties, and used his time as a sleeper agent to quickly create contacts with various resistance fighters among oppressed Kurds and Islamic fundamentalists that were repressed as part of Saddam Hussein's pan-Arabist agenda, to which his contacts acted as the main reason why Liquid was able to remain inside Baghdad long after the beginning of the Gulf War despite the heavy presence of the Mukhabarat (the Iraqi Intelligence Service) agents and counterspies within the al-Amn al-'Amm secret police forces. In addition to the SCUD missile mobile launching platforms' locations, Liquid also uncovered details of mustard gas production as well as the movements of Republican Guard tanks, and filed the reports to coalition forces, who promptly used his information to plan a number of missions.

During the Gulf War, Liquid Snake succeeded in destroying four mobile SCUD missile launchers before Iraqi paratroopers captured him, with even Liquid being unable to comprehend how he was captured easily as he was being transported for the secret police's headquarters in a van with a canvas sack over his head. In addition, Liquid was believed to have been sold out by the SIS to get a new source of information from one of Saddam's closest associates. After being delivered to the al-Amn al-'Amm headquarters, he was subject to the torture of the secret police's interrogation squads. These torture rounds, as well as the interrogation squads' sadistic reactions to rubbing salt into Liquid's wounds under Saddam's command, were what led Liquid to believe that humanity, when absolutely free, were vicious and irredeemably evil, almost similar to beasts. His hatred of having his will constrained to the extent that the only "liberty" that it can be allowed is to live was also stemmed from the brainwashing in the POW camps.

He was then brainwashed by the Iraqi government and assigned to undertake major terrorist activities throughout the Middle East before he was rescued in 1994. During his time of brainwashing, he also set about creating international networks. Upon hearing of the FOXHOUND unit during the 1990s, he expressed interest in it and dubbed his activities Jackal hunting, which was a rudimentary Middle Eastern equivalent of FOXHOUND. He also developed a resistance to extreme climate temperatures due to his missions in the Arab desert regions.

By the time he became the commander of FOXHOUND, he started suffering mental instability as a result of discovering that the "genes" that he inherited from Big Boss as a result of the Les Enfants Terribles project were apparently recessive.

Behind the scenes
Liquid Snake (リキッド・スネーク) serves as the primary antagonist of the original Metal Gear Solid. Hideo Kojima made Liquid Snake a clone in order to create a strong opponent for Solid Snake, and thus a worthy final boss for a video game, citing that, "It's Snake who can surpass the Snake."

Metal Gear Solid
The mission in which Liquid was captured in Iraq bears similarities to one of the mission outlines of a failed SAS operation during the Gulf War, Bravo Two Zero.

Although Roy Campbell said Liquid was rescued after Snake retired from FOXHOUND, Liquid's briefing file says he was rescued in 1994, one year before Snake retired.

In the original game's English version, Liquid mentioned that Big Boss had personally told him that he was inferior. In the Darkness of Shadow Moses instead has Liquid state his belief that Big Boss knowingly chose him to be the inferior clone (also included in The Twin Snakes remake), possibly suggesting that the two never met one another. It remains unclear as to which clone was created to express Big Boss's dominant or recessive traits, since Liquid's exposition on Les Enfants Terribles is contradicted by Ocelot's later report to Solidus, regarding which clone was designated the "inferior" one. The subject of Big Boss's dominant and recessive traits, in regards to the clones' gene expression, has never referred again in subsequent games and sources. A recap of Liquid's dialogue was included in the in-game novel In the Darkness of Shadow Moses, but there is no mention of dominant and recessive traits. However, the dialogue remains essentially unchanged from the original game in The Twin Snakes remake.

In Liquid's official Metal Gear Solid artwork, he is seen wearing dog tags, though they are not seen in the game itself. However, his wearing of dog tags was included in the remake, The Twin Snakes, in which the player is also given an option to procure the tags if Liquid is knocked off the edge of Metal Gear REX. Nevertheless, Liquid will retain them in various following cutscenes.

AbbyShot Clothiers, a company that creates movie and video game-inspired clothing, created a trenchcoat similar to those worn by Liquid and other members of FOXHOUND. The standard coat is priced at $399 CAD ($385 USD), while a custom sized version is priced at $499 CAD ($482 USD). On a semi-related note, Liquid's attire also resembles that of Colonel Silver, a member of the Red Ribbon Army from the Dragon Ball franchise, who in the anime also shared the same Japanese voice actor as Liquid (Banjō Ginga). Liquid's trench coat also greatly resembles the one Big Boss wears in his MGS artwork and his appearance in MGS 4. This is likely deliberate to showcase his desire to imitate and surpass his father.

Liquid's speech on the fictional Asymmetry Theory may be a reference to genetic diversity as individuals with genetic diversity from outbreeding (non-related mating) thrive while individuals made from inbreeding (related mates) have similar genetic codes and are less likely to survive than outbred indviduals because Liquid, Snake, and the Genome Soldiers all have the same genetic code, Big Boss'.

Metal Gear Solid 2: Sons of Liberty
In the original plot for Metal Gear Solid 2: Sons of Liberty, Liquid was intended to have faked his death from FOXDIE and was also to have been the main antagonist of the Tanker Chapter (which was originally supposed to be on an aircraft carrier). However, this, along with most of the original plot, was scrapped due to tensions rising in the Middle East. According to character designer Yoji Shinkawa, Liquid living on via Ocelot's transplanted arm was added in as a direct result of Liquid's popularity, as he was originally slated to have a cybernetic arm instead.

Metal Gear Solid: Peace Walker
During the 2009 Tokyo Game Show, Kojima stated that players would discover what caused Liquid to become one of the series' antagonists in Metal Gear Solid: Peace Walker. However, Liquid makes no actual appearance in the game and is only mentioned once, during Kazuhira Miller's secret phone call, as one of the "two sons" of Big Boss. His later impersonation of Miller was also alluded to in two radio calls, both relating to the player (either as Big Boss or a male MSF soldier) using the "Miller" uniform. He does, however, make a cameo appearance in the English version of Peace Walker, on the front cover of the Liquid Magazine. This was changed from the real life Dengeki PlayStation magazine featured in the original Japanese version. The Liquid Magazine featured two lines uttered by Liquid on the cover: "We have no past, no future", in reference to his statement to Solid Snake regarding their creation for the sole purpose of fighting; and "Did you like my Sunglasses", referring to his line when Snake confronts him in the hangar, regarding his disguise as Master Miller.

E3 Battle
Liquid appeared as a participant in the Konami-sponsored event E3 Battle, where he defeated Aoba Anoa from Otomedius in the first round. He ended up facing off against and losing to Revolver Ocelot in the second round.

"LIQUID SNAKE FIRST APPEARED IN Metal Gear Solid (1998) Former FOXHOUND squad leader and twin brother to Solid Snake."

- Liquid Snake's bio from E3 Battle

Metal Gear Solid V
Liquid Snake made his debut appearance as the boy known as "Eli" in the E3 2013 trailer for Metal Gear Solid V: The Phantom Pain. In the trailer, he is described as "A Youth who Curses his Fate." He also appeared in the E3 2014 trailer, showing him struggling with Big Boss. In this instance, the back of his jacket featured the words "Never Be Game Over," along with the Japanese characters 液体人間, roughly translating to "Liquid Man." His appearance in the E3 2015 trailer shows him jumping into the Metal Gear Skull Face leads Big Boss to, subsequently using it to chase Big Boss. He is also shown sitting next to an identical looking boy in a helicopter when Big Boss is heard saying "Les Enfants Terribles, Zero called it." However, it was later revealed that the boy in question was actually Psycho Mantis in disguise due to being attracted to his hateful reaction to Venom Snake.

Eli's age, appearance, character description, and jacket decoration in The Phantom Pain trailers initially led to speculation that he was a young Liquid Snake. When asked about Eli's design in an interview with Game Informer, during the lead-up to Ground Zeroes, Yoji Shinkawa said he was forbidden to answer at that moment. This connection to Liquid is further alluded in the E3 2015 trailer. Eli was confirmed to be Liquid in The Phantom Pain.

Owing to his being the child version of Liquid, he also conducted similar actions to his role in his debut game:
 * When escaping Mother Base, he tells Venom Snake, "I'm not like you!" before boarding Sahelanthropus, which is the exact same words he told Solid Snake shortly before boarding REX.

At one point, Eli is seen sitting next to a decapitated rotting boar's head, alluding to the book and film Lord of the Flies.

On August 25, 2015, another trailer showed Eli alongside Quiet, Huey, Miller and Snake on Mother Base.

On the Phantom Episode "Kingdom of the Flies" (a reference to the book and film Lord of the Flies) included in the Blu-ray documentary in the Collector's Edition, it details an episode that was cut from the main game; in which it elaborates on Eli's fate after allying himself with Tretij Rebenok while hijacking Sahelanthropus. The cutscene then ends with a voiceover of Eli saying "Not yet! It's not over yet!" and a view of New York's pre-9/11 skyline, possibly alluding to the Big Shell Incident.

Liquid also appears in the Ground Zeroes extra op, Déjà Vu. In the mission, Liquid appears in a flashback when the player drives a jeep underneath a bridge, depicting Liquid pursuing Meryl and Snake in the climax for Metal Gear Solid. He also screams Snake's name during this flashback. Aside from this, Miller mimics Liquid in the post-mission quiz relating to events from the original Metal Gear Solid, using either direct lines from the game or paraphrases relating to the context of the quiz. In addition, Miller also ends up succumbing to FOXDIE if the player manages to complete all ten questions correctly, causing an eleventh question to pop up where the player has to finish Miller's declaration of "FOX... DIE..."

According to Hideo Kojima's notes in the Piggyback Collector's Edition Guide's art gallery, Eli, as he is still a child, was still "in development" and as such is physically and mentally not complete. As such, while he tries to play it cool, he feels weak and vulnerable truthfully.

Eli can be found on Mother Base, sitting in a chair on the top floor of the central command platform. However, he only appears when Venom Snake is leaving Mother Base on a helicopter.

Reception
Liquid proved to be extremely popular upon his debut. Kojima, in a series of Twitter posts, reflected that had he thought ahead beyond each Metal Gear game being the last, especially Metal Gear Solid, he would have spared Liquid and split him from Snake in light of his popularity instead of having him die. Liquid's popularity was large enough that he inspired in the creation of another antagonists such as Celile Carlyle, the main antagonist of Winback:Covert Operations a similar game to the Metal Gear series.

Metal Gear Solid
When outside the control room of Metal Gear REX before Snake loses the PAL card, the player can contact Liquid, who will still answer disguised as Master Miller, even though Liquid will still appear to be sharing a conversation with Ocelot if the player looks at the control room in first person view (at this point, the player is unaware that Miller is really Liquid, and the player cannot look in First Person View while using the Codec. The player can, however, use the scope to view Liquid and call Master Miller).

If Snake is killed during the torture session with Ocelot, Liquid will berate Ocelot for "doing it again," referring to Donald Anderson's death.

If Snake fails to defeat Liquid atop REX before the time limit runs out, Liquid will laugh maniacally during the Game Over screen. If the player pushes Liquid off REX in The Twin Snakes, Liquid will drop his dog tags.

Super Smash Bros. Brawl
Liquid (along with several other Metal Gear characters) made a cameo feature in Super Smash Bros. Brawl as a mention in a collectible trophy in Super Smash Bros. Brawl. According to the cardboard box trophy, Liquid is just as fond of cardboard boxes as his brother and father. He also appeared as a sticker, depicting his Metal Gear Solid artwork, of which, when it is worn, the food effect will increase by 6.

Metal Gear Solid 4: Guns of the Patriots
Killing enough human enemies in Metal Gear Solid 4 will cause Old Snake to recall Liquid’s words to him at the end of Metal Gear Solid ("You enjoy all the killing, that's why!"). The shock from this episode causes Snake to throw up and his Psyche Gauge lowers drastically. Although, if you pause the game after Liquid's speech, then you will skip the vomiting and not lose any Psyche. Unlocking this flashback after downloading the trophy patch will also result in the trophy, "You Enjoy All the Killing, That's Why!", being unlocked. In Metal Gear Solid 4, Liquid's voice is heard over flashbacks taken from The Twin Snakes.

In Act 4, when arriving at the Supply Route where REX's remains are located, taking a photograph of the cockpit area with the camera will reveal a ghost of Liquid Snake.

During the opening stage of the final battle with Liquid Ocelot, images of Liquid from Metal Gear Solid flash on the screen, and the "Encounter" music from Metal Gear Solid is played. Liquid Ocelot's attack patterns in this stage are similar to the ones Liquid Snake used in the fistfight atop REX.

Appearances

 * Metal Gear Solid
 * Metal Gear Solid 2: Sons of Liberty (mental doppelgänger, mentioned and flashbacks)
 * Metal Gear Solid: The Twin Snakes
 * Metal Gear Solid 3: Snake Eater (indirectly mentioned)
 * Metal Gear Acid 2 (non-canon)
 * Metal Gear Solid: Portable Ops (indirectly mentioned and prophetic vision)
 * Metal Gear Solid 4: Guns of the Patriots (mental doppelgänger, mentioned, flashbacks, voice, painting and ghost; painting and ghost is non-canon)
 * Metal Gear Solid: Peace Walker (indirectly mentioned and magazine cover; magazine cover is non-canon)
 * Metal Gear Solid V: Ground Zeroes (flashbacks and impersonated voice in the Déjà Vu mission; non-canon)
 * Metal Gear Solid V: The Phantom Pain