Raiden

I am lightning... the rain transformed.

Raiden is the Saber Class Servant of the Sixth Holy Grail War, who survived until the end.

Origins
A child born in Liberia, during the First Liberian Civil War. Jack was given his name after he was adopted by Solidus Snake after he killed his parents. He was afterwards trained as a child soldier to fight in the civil war, gaining the nicknames "White Devil" and "Jack the Ripper".

Afterwards, Jack was taken to the USA and came into the Patriots' hands, who implanted him with nanomachines which, among other things, manipulated his memory. Although he suppressed his memories as a child soldier, every night he would have nightmares about his horrific past. Jack joined the military, and participated in hundreds of VR missions, including simulations of the Shadow Moses Incident and the Tanker Incident. Prior to the Big Shell mission, Jack was recruited into the debunked FOXHOUND unit.

At the beginning of the Big Shell mission, he is referred to as "Snake" before being given the codename "Raiden" in order to avoid confusion, as the terrorist who had taken control of the Big Shell had been referring to himself as "Solid Snake". During the mission, he meets up with Iroqouis Pliskin, a member of the Navy SEALs, who saves Raiden from Vamp. It is later revealed that iroqouis Pliskin is actually Solid Snake, who was supposed dead from the Tanker Incident two years prior. Raiden learns of the existence of the Patriots', as well as Solidus Snake, who he later recalls is his foster father. Using Emma Emmerich's worm cluster, the Patriot AI is disrupted, which causes the Colonel which Raiden had been communicating with to act irrationally. As Snake and Raiden fight their way through Arsenal Gear, Raiden learns of the S3 plan, and that the Colonel was actually a Patriot AI. He learns that the entire Big Shell incident is orchestrated to be a replica of Shadow Moses in order to turn Raiden into a new legendary warrior like Solid Snake, by recreating the experiences that Solid Snake himself went through. He was also picked due to his relationship with Solidus Snake mirroring that of Solid Snake and Big Boss. It is also revealed that his wife had been a plant by the Patriots to control and spy on Raiden.

In the end, Raiden must kill Solidus Snake in order to preserve the life of Olga Gurlukovich's daughter and his wife Rose and their unborn child. Emerging victorious, Raiden kills Solidus Snake. He then reunites with Solid Snake, who reassures him that he is no longer anyone's pupper, and that he can now shape his own destiny. Raiden met up with Rose, forgiving her and continuing to spend his life with her.

Despite his loving relationship with Rose, the traumatic memories of his life as a child soldier resurfaced, causing tension in their relationship. He sunk into alcoholism, and began getting into fights, as well as deciding to leave her. he was also led to believe that his unborn child had died from a miscarriage.

Raiden learns the location of Olga's daughter, Sunny, from Big Mama, and successfully rescues her from Area 51 with the help of Big Mama and her PLA. He is captured by the Patriots wihle working for the PLA, who subject him to experiments in cybernetic enhancement surgery, during which his entire body is replaced with a synthetic cyborg body. With the help of the PLA, he is able to escape captivity, and is cleared of nanomachines thanks to a surgery.

In 2014, Raiden reappears in South America, warning Solid Snake of an ambush by a PMC. He then assists Solid Snake and Naomi Hunter with their escape, fending off Gekkos as well as Vamp. He is severely wounded and is rescued by Solid Snake, where he is given a transfusion of artificial blood.

After making sufficient recovery, Raiden makes his way to Shadow Moses where he helps Solid Snake fend off Gekkos, before he faces Vamp on top of Metal Gear REX. After that, Raiden stays behind to hold off Gekko forces as Solid Snake escapes the Shadow Moses facility, causing debris to crush Raiden's body, which leads to him removing his own arm. After fending off the Outer Haven ship, Raiden's body is recovered by Otacon, where he is told that he is in no more fighting state.

Raiden soon after boards Outer Haven during Solid Snake's infiltration, missing both arms and wielding his H.F. sword with his teeth. He saves Solid Snake from a group of troops, allowing him to enter the server room as he fends off the assailants.

After the events of the Guns of the Patriots incident, Rose reveals to Jack the child who he was led to believe was the Colonel's was in fact his, and the miscarriage had been a lie to protect the child from the Patriots. Following the end of the incident, Raiden attempted to return to a normal, civilian life with his wife and son. Unfortunately, the technology behind his artificial skin was still imperfect, causing his appearance to be extremely unnatural. His inhuman appearance caused it for him to have difficulty finding employment.

Due to this, Raiden returned to the military sector, seeking a non-combat position so he could provide for his family. Raiden meets with Boris once more, and joins his PMC, Maverick, as a full-time employee.

In 2018, during an escort mission for prime minister N'mani, cyborg soldiers belong to the Desperado PMC start attacking. The Desperado leader Sundowner manages to abduct N'mani. Wanting to restart the war economy, Sundowner murders N'mani. Trying to stop Sundowner, Raiden is intercepted by Samuel Rodrigues, who ends up amputating his left arm, as well as his left eye.

After being outfitted with a custom cyborg body, he is sent to Sukhumi in order to quell a military coup. Making his way through the old city, he encounters IF Prototype LQ-84i deployed to assassinate him, which Doktor later makes adjustments to. Raiden eventually reaches Despetaro's main base, where the leader of the of the forces, Mistral, fights him on top of a plant. He eventually disarms her of her weapon and kills her after dousing her in liquid nitrogen.

A day later, he heads off Guadalajara to infiltrate a research facility. Going through the sewers to find a Desperado lab, he rescues a Guyanese boy named George who had escaped from the facility. Learning that the facility removed brains from children, Raiden made way to the location. There, he discovers Senator Steven Armstrong's involvement with Desperado.

Raiden leaves Maverick due to their inability to pursue any action against World Marshal due to the legality and set soff to World Marshal headquarters in order to rescue the children brains. Raiden is reminded by Samuel that despite the cyborgs he killed had been adults, they were still forced to participate due to having no choice if they didn't want to be left begging on the street. Raiden then begins to hear their panicked inner thoughts, causing him to become emotionally unstable. Sam and Monsoon then allow Raiden to realize his true nature of being a killer, upon which he awakens his Jack the Ripper persona, having his pain inhibitors disabled and killing Monsoon.

Raiden made his was inside the World Marshal headquarters, reaching the server room and finding Sundowner, who explains that the children are being subjected to VR training known as the Sears Program in order to turn them into killing machines like Raiden. He learns of Armstrong's actions, and sets off to stop him.

While on the way to Solis, he re-encounters Sam, and the two of them have a duel to the death. After Raiden kills Sam, he realizes that Sam barely had any cyborg enhancements. He gives Blade Wolf Sam's Muramasa as the two head off to Solis.

The two boarded the aircraft at Solis, arriving to Shabhazabad Air Base. After raiding the World Marshal forces and making way to the control tower's, a new Metal Gear rises out of the pit, which Raiden fights and destroys by using its own blade to destroy it.

Afterwards, he has a fistfight with Armstrong atop the Metal Gear EXCESUS, where Armstrong is able to gain the upper hand against Raiden thanks to his nanomachines. As Raiden was on the verge of defeat, Blade Wolf plays abck a message Sam recorded before dying, granting Raiden the Muramasa Blade. Using it, Raiden is able to defeat Armstrong and kill him.

Afterwards, Raiden does not rejoin Maverick, instead going on to fight his own war.