In Metal Gear Solid 4: Guns of the Patriots Raiden's entire body below the upper jaw is replaced with a prototype cybernetic body. His original cybernetic body is replaced with a black one that also covers the left eye for Revengeance.
MGS4 Raiden is a cyborg ninja bad ass, supposedly the only human piece of him left is his upper head. Looses both arms, bleeds white Synthetic Blood, gains lightning powers.
After sustaining severe injuries in a fight with Samuel Rodrigues, he underwent a full-body cybernetic conversion by Doktor, following the departure of Maverick's previous cybernetics specialist for unknown reasons, discarding the few remaining organic parts he had left in favor of a 100% cybernetic body.
If we take Metal Gear Rising into the equation, as far as I remember, only his head from the jaw-up is human/biological. Perhaps his spine is still intact. The rest is all mechanical. He bleeds red in Metal Gear Rising but that's only for the american version of the game.
After escaping captivity and undergoing surgery to clear his body of nanomachines, Raiden utilized his new body during the Guns of the Patriots Incident in 2014.
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.
In Metal Gear Solid 4: Guns of the Patriots Raiden's entire body below the upper jaw is replaced with a prototype cybernetic body. His original cybernetic body is replaced with a black one that also covers the left eye for Revengeance.
3 Raiden Shogun, Around 3000 Years Old.
The former Electro Archon, Raiden Makoto is the twin sister of Raiden Ei. Compared to Ei's more stressed personality, Makoto was known as a calm and peaceful goddess. In this way, the two have a very balanced dynamic.
Throughout Metal Gear Solid 2, Rose acts as part of Raiden's support team along with Solid Snake and Colonel Campbell, she is also Raiden's girlfriend.
He's referring to the events of Twin Suns from Metal Gear Solid 4, where he had to lose his arms to save Solid Snake (specifically, he willingly cut off his right arm to save Snake from Outer Haven due to being otherwise unable to move in to aid Snake, and he lost the remaining arm when he was crushed by Outer Haven).
Raiden's parents were a couple who had a son together. Some time after their son's birth, they were killed by Solidus Snake. He took their son, named him Jack, and raised him as a child soldier in the Army of the Devil.
John, nicknamed Little John, is the son of Raiden and Rosemary.
"White blood is an artificial blood initially developed for military use." It is explained later, it was outdated by 2018. On the japanese version it was white due to japan's censorship.
6 Son of (Solidus) Snake
After revealing to Raiden that he is his adopted father, Solidus also makes the chilling revelation that he killed Raiden's biological parents so he can be trained as a soldier.
The high heels make ninja run and climbing possible, and let him attach his swords to his feet. As for wigs, Raiden has naturally almost white and long hair. After the Patriots turned him into a cybork he lost his real hair and now wears a wig.
Ei is the name of the current Electro Archon and Makoto's sister. She's erroneously referred to as Baal — that's because the public is ignorant that the previous Electro Archon actually perished centuries ago.
Following Solidus's defeat, Rose, free from the Patriots' custody, reunited with Raiden in front of Federal Hall, echoing their first meeting two years earlier. There, Raiden proposed to her, telling her that they would pass on the "things that [weren't] written into our DNA" to their child.
However, Raiden managed to save both the children and George, killing the scientist in the process, by breaking the glass and putting George in the cryopreserver, respectively. They were later placed in the care of the German cyberneticist, Dr. Wilhelm Voigt.
Jack, codename Raiden, is the main protagonist of Metal Gear Rising: Revengeance.
The real reason why Raiden was called "Snake" is because he represents the player having taken the role of Solid Snake in previous games/VR missions/Tanker Chapter. Minor nitpick, but a solidus isn't a gas, it represents a point between solid and liquid states.
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.
Although not an eyepatch, Raiden utilized a cloth to cover his missing left eye, after a fight with Samuel Rodrigues resulted in his eye being injured and amputated, and because a cybernetic replacement eye wasn't fully created prior to his surgery, in 2018.
Raiden Shogun's true name is Raiden Ei. The previous Electro Archon, Raiden Makoto, is her sister. They are a pair of twins who together emerge victorious in the Archon War. Makoto, an expert administrator whose weakness lies in combat, subsequently created the Shogunate in Inazuma.