Raiden

Raiden (雷電), real name Jack (ジャック), was the adoptive son of Solidus Snake. He was adopted after his parents were both killed by Solidus early in his childhood. From an early age he was trained to be a soldier and earned several nicknames due to his skill in combat. During the Big Shell Incident, he discovered that Solidus Snake killed his parents. Sometime after this, he was outfitted with a cyborg exoskeleton to keep him alive after being tortured by The Patriots in which they removed his spine and part of his head.

Early Life and Career
Raiden was adopted by Solidus Snake after Solidus killed his parents while he was still very young. He was a child soldier without a documented past, absent from the databases of the NSA, CIA and FBI. In the 1990's, Raiden fought in the Liberian Civil War under Solidus Snake as a killing machine known alternately as the "White Devil" and "Jack the Ripper" due to his incredibly high kill rate compared to other boys his age. Armed with a gun at the age of six, he proved a superior soldier, rising to become captain of the Small Boy Unit at ten. Raiden would later remember that the first gun that he held at that age was an AK rifle. After the war ended, Solidus placed him at the relief center for a while, and when he returned to get him, he had already been taken out (it is believed that the Patriots were responsible for getting him out). At somepoint between his fighting with the Small Boy Unit and his life in the United States, the Patriots had inserted an immense amount of Nanomachines in his cerebral cortex to have Raiden act as a back-up system in case something happened to one of the AIs.

Several years later, Jack would grow up to supress the memories about his terrible childhood, burying the memories of his bloody past. Despite this, he still suffers from nightmares of his past nearly every night. Now living a life in the United States, Jack joined the military where his admirable skills were at first recognized by the U.S. Army's Task Force XXI. From there he participated in three hundred VR simulations, such as a re-creation of the Shadow Moses Incident, that took place a few years earlier.

On April 30th, 2007, Jack met Rosemary during an argument about King Kong. After they parted ways, they met again afterward, shocked that they worked in the same place. Eventually, Jack grew to love Rose deeply, but his harsh experiences had left him melancholic and emotionally distant, and he constantly shut her out of his problems. However, all of this drama was a ruse by the Patriots to gain control of Raiden's life, with Rosemary as a Patriot spy.

Sometime before the Big Shell Incident, Raiden was recruited to act as a pawn of the Patriots – via "FOXHOUND" – an organization which no longer existed. It was at a "FOXHOUND" facility that Raiden first earned the codename of "Snake."

At the beginning of the Big Shell mission, he was shortly referred to as Snake before his codename was quickly changed to Raiden by the Colonel, as the leader of the terrorists was also referring to himself as Solid Snake. On his way to the Big Shell, he also found that the oil fence had a recently cut hole emitting from it, implying that someone other than him managed to sneak in. He later revealed this to the Colonel, who was shocked, since there wasn't supposed to be anyone other than Raiden who would infiltrate. He also stumbled upon other evidence that someone else had infiltrated before him (such as one of the guards waking up in the adjoining hallway, looking confused, and then running towards the right, implying that someone knocked him out, as well as seeing this same guard, along with two additional guards, being catapulted from the elevator, and Raiden getting a brief glimpse of the intruder in the elevator). The terrorist leader was later revealed to be none other than Raiden's adoptive father, Solidus Snake. Raiden took to the mission with much hesitance, as he had only been trained in VR missions (some of which also didn't cover vital materials such as knowing how to dispose of C4) and had no actual field experience and often proved somewhat indecisive at times.

Raiden later met up with Iroquois Pliskin a Lieutenant Junior Grade with the United States Navy SEALs, who was revealed to be the real Solid Snake, who had faked his death two years prior during the Tanker Incident. Raiden and Snake were able to join forces to take down Dead Cell and implant a virus into GW, the Patriots AI that was running Arsenal Gear, an enormous Patriots warship built under the Big Shell. He was then captured by Snake and Olga Gurlukovich, but Olga freed him shortly afterward, telling him they needed to use him so Snake could sneak on board. Raiden then met up with Snake, who gave him Olga's High Frequency Blade. The pair battled through Arsenal Gear's Arsenal Tengu commando soldiers before encountering Fortune. Snake told Raiden to go ahead, with Fortune claiming that Snake was the root of all her misery. Raiden, hesitant at first, left Snake to face Fortune. Raiden went on to battle against the horde of mass-produced versions of Metal Gear RAY units managing to defeat several of them before collapsing from exhaustion. Just as Raiden was about to be killed, Olga came to his aid. By doing this, she revealed herself as an enemy of Solidus, who appeared and killed Olga. Olga's final words were for Raiden to live. As Solidus ordered the remaining RAYs to kill Raiden, the virus planted into GW went into effect, disabling the RAYs which were disposed by Solidus out of frustration.

Later into the mission, it was revealed that Raiden was merely a puppet of The Patriots, and that his entire mission on the Big Shell was a lie, a scripted event cunningly devised by the Patriots. Additionally, the "Colonel" he was speaking to was actually GW, an AI created by the Patriots, posing as Colonel Roy Campbell, created by Raiden's hopes and expectations of Campbell. They told him that he was just a weapon, a creation of the Patriots with no purpose but for what they made him. The AI instructed Raiden to defeat Solidus, which he had no choice but to do so, for his own sake and for the sake of Olga Gurlukovich's daugher and Rosemary. Solidus also desired to kill him so he can access the backup data of The Patriots that was stored in his cerebral cortex, to compensate for the apparent destruction of GW to track them down.

After the fierce battle on top of Federal Hall ended with Raiden emerging victorious, it was then revealed that even Rose, Raiden's longtime girlfriend, was a Patriot spy sent to keep tabs on him, who even went as far as to alter her appearance to Raiden's liking so that he would keep her in his life. Raiden solemnly forgave Rose, who had actually fallen in love with him over time. She told him that she was pregnant with his baby, and they agreed to start a new life together. Before that, however, Raiden met up with Snake again, who assures him that he is not the puppet of anyone, and that he can shape his own destiny. Raiden offered his services to Philanthropy, but Snake told him to take care of his personal life first.

Post-Big Shell
Raiden and Rosemary began living together, but the tragic memories of his days as a child soldier started to resurface, causing tension in their relationship. He began drinking heavily, and getting into fights and eventually decided to leave her.

Raiden learned from Big Mama, in exchange for the location of Big Boss that he obtained from GW, that Olga's daughter, Sunny, was being held in Area 51, and successfully rescued her with the help of Big Mama and the Paradise Lost. After hearing of Rosemary's miscarriage and subsequent remarriage to Roy Campbell, Raiden became despondent. He left Sunny in the care of Otacon and Snake. Afterwards, he left to wander the Earth, Raiden studied scouting techniques under a Native American shaman living in Alaska, also learning to hunt. He then began work on retrieving Big Boss's remains from the Patriots for the Paradise Lost Army, leading to his capture. As a prisoner, the Patriots used Raiden as a test subject for experiments in exoskeletal enhancement surgery, during which he had his head and spine excised from his body from his lower jaw down and subsequently grafted into an enhanced synthetic body.

With the help of the Paradise Lost Army, Raiden managed to escape his captivity. After undergoing surgery to clear his body of nanomachines and being saved by Dr. Drago Pettrovich Madnar, he was successful in reclaiming Big Boss's remains from the Patriots. He briefly made his first communication to Snake in years during the mission, but had to abruptly end the call due to the Patriots firing on him. The enhancements implanted throughout Raiden's body, however, were too severe to allow him to live a normal life again. He elected to disappear from the life of his fiancee, Rosemary.

Upon receiving orders from Big Mama to assist Snake and lead him to the Paradise Lost Army, Raiden set out into battle once more.

Raiden returned in 2014, and while Solid Snake was in South America, he contacted him through Codec, helping him track Naomi, also commenting that he had been helping Big Mama find the corpse of Big Boss. He also feels as if Raiden is his only name, disavowing his identity of Jack when Snake is first contacted by him. Raiden appeared in person in the South American Marketplace where he helped Snake and Otacon escape by fighting off the Gekko and later Vamp. He defeated Vamp once again and escaped with Snake, Otacon, and Naomi Hunter, but not before being badly injured from the previous fights. Aboard the Nomad, he was continuing to suffer even more due to his injuries, causing his chances of survival to become very bleak. Naomi, during his suffering, had sympathy for him, as her adoptive brother and Raiden had both endured a great deal of suffering as a result of each becoming a Cyborg Ninja, and was extremely bitter that the Cyborg Ninja project was still continuing, despite the evident pain that both Raiden and her brother had to endure as a result of becoming them.

After a dialysis and a "white blood" transfusion with the help of Dr. Madnar, he returned again and saved Snake's life at Shadow Moses after disabling the suicide gekko that were attacking. He has a final face off with Vamp, after Snake returned him to a near mortal state via the nanomachine supressors Naomi gave him, on top of Metal Gear REX, with Raiden emerging the victor, finally killing Vamp once and for all. He also tells Naomi (shortly before she euthanized Vamp and commited suicide by injecting herself with large doses of nanomachine suppressors) that Sunny said that "the eggs... they're ready." With Snake controlling REX, Raiden assisted in his escape by warding off the Gekko chasing them, eventually being caught under debris caused by the Suicide Gekko. He sets himself free from under the debris by removing his right arm. After doing so he put himself in the way of Outer Haven, stopping it in its path and holding it back from crushing Snake allowing him to get out of the way. Raiden eventually was crushed under it, screaming Rose's name and remembering a conversation of how they met as well as images reuniting with her at Federal Hall during the the end of the Manhattan Incident before he loses consciousness. He was confirmed later to be alive by Otacon but was in no state to help Snake in his final mission aboard Outer Haven.

However, as Snake made his way deeper into Haven, he was saved once again by Raiden, missing both arms and wielding his sword in between his teeth, from a group of FROGS. He originally intended to go upload the FOXALIVE virus into GW in Snake's place, stating that his current state makes himself immune to the Microwave hallway, but is eventually convinced by Snake to not do it as he "still has his youth." Instead, he decided to hold the FROGS off and buy Snake enough time to upload FOXALIVE. He was able to defeat several of them but was eventually overwhelmed and taken down. Once Snake and Otacon destroyed GW along with the other four AIs, the FROGS were incapacitated and unable to kill him.

Afterward, Raiden was sent to a hospital where he is fitted with with a new cybernetic body that appears far more human. Upon Raiden waking up from his surgery, Rose and a small child entered the room, with Raiden ignoring them both, thinking that the child was Roy Campbell's, who Rose had married during Raiden's disappearance into the Alaskan wilderness. Rose told Raiden that the child was his, and her miscarriage was a lie. She explained that her marriage to Campbell was a plan that they both had orchestrated to protect herself and their son from The Patriots so as to not give the Patriots any reason to capture Rose and John, as they would provide no leverage against Raiden. In other words, Raiden's lack of awareness of his son and his disdain for Rose meant that both would serve no purpose to the Patriots, as their suffering would not move him in any way. Stunned, Raiden forgave Rose once again, as she felt desperately guilty from being unable to tell him from the danger it presented. She proceeded to introduce their son as John and the three huddled together in reunion. To him, at that moment, it felt like a scene from Beauty and the Beast. But Rose reassured him that he was no beast, but her husband. Raiden then vowed that he was done running, while Rose vowed that she was no longer afraid.

Metal Gear Solid: Rising
According to the teaser trailer for Metal Gear Solid: Rising, Raiden in his Cyborg Ninja form will be appearing as the protagonist. The tagline "Raiden Returns" is used in the trailer. As of yet, nothing is known about the plot of the game or what timeline the story will take place in. Also, for currently unknown reasons, his eye color was changed to brown instead of blue. This was recently changed back to blue, however, as revealed in a puzzle of the online puzzle game Metal Gear Solid: Piece Walker.

Personality
When he first appeared, Raiden was a young and "inexperienced" agent of a "reformed" FOXHOUND unit, occasionally prone to emotional outbursts. When the memories of his time as a child soldier began to resurface, he apparently gained somewhat of a low opinion of himself, especially in comparison to Solid Snake's accomplishments.

By the time of Liquid Ocelot's Insurrection, Raiden has changed considerably; the trauma of his break-up with Rose and the "miscarriage" of their unborn son, combined with rigorous training and his torture at the hands of the Patriots, have changed Raiden from an inexperienced rookie to a cold and virtually emotionless soldier, who seemingly doesn't care about his own life like in his fight with Vamp in South America, he freely admits to Vamp that he doesn't fear death. Raiden's only real display of emotion occurred after the death of Big Mama; Snake tells Raiden that he (Snake) has no future, while Raiden has a family; at this, Raiden nearly attacked Snake, shouting that he too has nothing. Nonetheless, due to his past experiences with Snake, he is completely loyal to the legendary mercenary. Upon discovering the truth about Rose's "marriage" to Campbell, it seems likely that Raiden has regained some of his old self.

Trivia

 * The word "Raiden" (雷電) literally means "thunder and lightning" in Japanese. During Liquid Ocelot's Insurrection, he mentioned that he was born on a rainy day, with Snake replying that Raiden was "the lightning in that rain". He also appeared to demonstrate lightning-like powers when he made his appearance aboard Outer Haven, although this may have also been excess electrical currents being emitted from his damaged exoskeleton.
 * Raiden was named after the Mitsubishi J2M Raiden, an Imperial Japanese WWII fighter aircraft (which was also used in a fictional fighter craft named the "Raiden mk-II"). The Allied codename for the plane was "Jack" during WWII. Going by what JD stated when goading Raiden into killing Solidus, it can be assumed that they gave Raiden that codename in order to convince him that he is nothing more than a weapon, a tool to be discarded once its usefulness has been outlived.
 * Because of Raiden's past in the Liberian Civil War, this makes him one of the few members in the VR unit Special Forces XXI unit to have true combat experience.
 * Raiden's character is somewhat reminiscent of Gray Fox; they both had father figures in Solid Snake's "family"; both have fair skin and hair; both were child soldiers and given nicknames due to their brutality; they both end up as Cyborg Ninjas and use technologically advanced blades; and they both saved Solid Snake from a Metal Gear (Fox with REX and Raiden with Outer Haven).
 * Raiden is also similar to Gray Fox's adopted sister, Naomi in that he was adopted by the same person who murdered his parents.
 * One of Raiden's nicknames, Jack the Ripper, is a pseudonym for an unidentified serial killer in 1888 who was active in the largely impoverished districts in and around Whitechapel, London.
 * Raiden used to smoke at one point in his life but had quit by the time of the Big Shell Incident.
 * Raiden had numerous barcode tattoos all over his body before he was turned into a cyborg. Yet, when he get's a new cyborg body that looks human, there are barcodes in the same places.
 * Raiden is the only known Cyborg Ninja to have survived, and also the only one who hasn't fought Solid Snake.

Behind the Scenes

 * Jack (Raiden's real name) and Rose are the names of the main characters in the 1997 James Cameron film Titanic.
 * Konami kept Raiden's starring role in Metal Gear Solid 2 a secret right up until the game's release in North America, even going so far as to replace Raiden with Snake in teaser trailers and other preview materials (although he did appear in a few trailers, in his scuba gear, his presence was not as emphasized as the other characters). The presence of Raiden in the game was announced to the Japanese press on the same day as the game's release in North America.
 * Following the release of MGS2, Raiden was met with a mixed reaction from fans of the series. Much of the negative response was due largely to his apparent naive attitude, androgynous appearance as well as acting as the protagonist over Snake. However, Hideo Kojima has stated in interviews that he was introduced primarily to attract new fans to the game so that he could ask questions that a veteran like Snake wouldn't ask, so as to avoid treating Snake like a rookie, and to make Snake appear more impressive as a character, an idea strongly defended by some fans. Kojima has also explicitly stated that Raiden is his favorite character in MGS2.
 * Metal Gear Solid 3 makes use of Raiden's character as well as his appearance. Selecting the option "I like MGS2!" before starting a new game, triggers a change in the opening, in which Naked Snake wears a mask that looks identical to Raiden's face, to conceal his identity from the gunship crew. Later in the game, Major Ivan Raidenovitch Raikov (who bears an intentional resemblance to Raiden) must be neutralized and his uniform stolen in order to infiltrate a section of Groznyj Grad.
 * In the Metal Gear Solid 4 Directors trailer, Raiden makes a parody appearance along with Snake, who is dressed to look like Sam Fisher, the main character in Splinter Cell. The trailer depicts them fighting over who will be the main character of MGS4. Snake wins the fight easily, sitting in the "Main Character" chair, signalling a chime. But just as Snake leaves and before the credits roll, Raiden is seen eyeing up the chair, and as the screen fades to black, the same chime is heard.
 * Raiden also has a major role in one of the Secret Theater shorts made by Kojima Productions for their website and include in Metal Gear Solid 3: Subsistence. Entitled Metal Gear Raiden: Snake Eraser, Raiden attempts to "erase" Solid Snake by traveling back in time in a Terminator-like fashion and attempting to assassinate Naked Snake, all ending in humorous failure. After deciding not to kill Naked Snake, he went back to the events of Operation Intrude F014 (complete with MSX2 graphics) to kill Solid Snake himself, ending in similar failure, where, ironically, he is stopped by his original target, Big Boss. In the ending, he accepts that he can't change the past, although he does hope to get a starring role in Metal Gear Solid 5 (ironically, he does).
 * Raiden's never-used sidearm in MGS4 is the classic Mk23. It is visible on the Medicom Action Figure based on the designs by Yoji Shinkawa, and usable when playing as Raiden in Metal Gear Online. Raiden was given a Mk23 by Snake during the Big Shell Incident, but whether or not this is the same weapon is unknown.
 * In Metal Gear Solid: Portable Ops Plus, Raiden (as he looked in MGS2) appears as a playable character, equipped with the Mk.23. He is also playable in Metal Gear Online, in his Cyborg Ninja look.
 * Raiden is a secret character in Evolution Skateboarding. To play as Raiden, the player must beat the game 100%, collecting all coins with character Mark Appleyard.
 * Raiden, in the Skull Suit, is featured as a sticker in Super Smash Bros. Brawl.
 * Game Informer ranked Raiden #2 in their list of the top 10 heroes of 2008.
 * A costume available to download for LittleBigPlanet allows the Sackboys to dress up as Cyborg Raiden.
 * In the Raymond Benson novelization, right after Fortune asked Raiden if he's "seen the fires of hell", he thought to himself "Fires of hell? Could she mean Liberia? The civil war? How could she know about that?" This implies that he remembers at least some of his experiences from his time as a child soldier. However, the canon of this in relation to MGS2 itself is unclear.