Raiden as a more mature character than in his previous appearances; they said his swordplay is not based on any samurai and that Raiden's cybernetic body includes heels because they enable his style of swordplay, where he wields weapons with his feet. When developing the game's, the team thought of Raiden's revenge against his enemies, which resulted in the title "Reveangeance". Writer Etsu Tamari expressed joy in the final product and expected that in the future, the team could make another game focused on Raiden. In a further analysis of how to write Raiden in Revengeance, Tamari stated he needed a new character that would bring him support in the form of the dog-like robot named Bladewolf; Similar to how Snake guides Raiden in Sons of Liberty, the mature Raiden acts like a mentor to Bladewolf across the story resulting in his character arc. Writer Etsu Tamari wanted to portray Raiden as a more mature person who wishes to take Snake's footsteps. Atsushi Inaba wanted the gameplay of Revengeance fit Raiden's style of characterization, resulting in the use of parries rather than defense. Inaba felt honored to work in Revengeance due to how he was able to see a more mature version of the character to the point of wishing for a sequel. Raiden is first depicted as a white-haired adult who uses a protective suit known as a for his missions in Metal Gear Solid 2: Sons of Liberty. 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. Although proficient at all types of weaponry, Raiden specializes in wielding swords that resonate at high frequencies for the last fights in Sons of Liberty, and during Guns of the Patriots and Revengeance. Personality In his first appearance, Raiden is a rookie agent who is inexperienced as a result of training only in virtual reality. He later reveals, however, that he was a child soldier known as who killed several enemies in a civil war and is ashamed of his past. This affects Raiden's personality; he begins to believe he is only useful on the battlefield and his relationship with his girlfriend Rosemary would not work. Manipulation by the Patriots causes him to believe he has no free will.