Monsoon

Monsoon was a Cyborg Ninja and a member of Desperado Enforcement LLC. He was one of the Winds of Destruction alongside Sundowner and Mistral, and was named after the seasonal wind systems that occur in West Africa and Asia-Australia. Monsoon was capable of magnetically dislocating his entire body to attack from a distance, and wielded Sai weapons called "Dystopia", which were enhanced via magnetic fields. He also seemed to believe that the point of humans was to fight, be consumed with greed and kill. His serial number is 976-AZQEE. He was fluent in Khmer, Chinese, and English. Unlike the other Winds of Destruction, he wasn't a former member of any military or paramilitary organizations prior to enlisting with the group. Instead, he was a former gang member.

Background
Full details on his past are unknown, although he claimed that he inherited his stance on killing people or ending up killed and his nihilistic views from the Cambodian capital city of Phnom Penh and the reign of terror from the Khmer Rouge regime and the Killing Fields between 1975-1979. At some point later, he joined a Cambodian organized crime syndicate, and was rumored to have had involvement in the drug trade and human trafficking. He also mastered the use of sai weapons. He eventually got cyberneticized with a magentics-based body after being caught in a gang shootout and mortally wounded. It was at this point that he decided to work with the Delaware-based PMC Desperado, apparently feeling it was much safer to work at a PMC instead of a crime syndicate.

Desperado Incursions
Monsoon intercepted and confronted Raiden before World Marshal HQ, and with Samuel Rodrigues bearing witness, fought Raiden. Having been informed by  Sam about  Raiden 's stance regarding his sword, he then told Raiden that he considered it a "pretty meme" and "exquisite”. Raiden, already emotionally unstable from  Sam’s earlier speech regarding the same subject , succumbed to his "Jack the Ripper" persona and admitted that he hid behind this excuse to conceal his true nature. Sam eagerly accepted Raiden’s sudden aggression, but Monsoon dismissed Sam, wanting the battle for himself. Monsoon noted that he misjudged Raiden and that he really was like his group after all. Jack the Ripper offered to "demonstrate" to Monsoon where his childhood nickname of "Jack the Ripper" came from.

Monsoon dueled with Jack the Ripper, while mocking the Ripper's potential. Monsoon also hurled various military vehicles at Jack, split himself apart to avoid blows, summoned large heaps of vehicles to run Jack over, and eventually hurled an obelisk at Jack as if it were a missile. Jack evaded the last attack and rammed him into glass. At this point, Monsoon requested Jack to jack him off. Afterwards, his disembodied head mentioned that he'll "return to the ground" and that he succeeded in imparting a meme onto Jack. Raiden later vowed to not let his nature come out again to  Kevin Washington afterwards. After Monsoon was defeated, his tactical sais Dystopia were later copied after careful analysis of his battle data.

After death
Despite his death, his overall form was later replicated into an AI-controlled body double, which alongside a Mistral body double guarded the server room.

Personality and traits
Monsoon's body utilized the Lorentz force of magnetics. This allowed him to dodge blade swings. In addition to its defensive means, it also had offensive methods, such as having his pieces swarm an enemy, remotely levitating any metallic objects such as vehicles to smash an enemy with, and even being able to levitate objects that have at least a minimum amount of metallic objects in them, as evidenced by his finisher move with the obelisk. He also used red phosphorus grenades to generate thick smoke, which he used to ambush his foes. Besides his magnetism abilities, he was also very skilled in the use of sai offensive weapons, which he was a master at even before becoming a cyborg. His eyes while as a cyborg were hooked up to cables that attached to a bump in his helmet.

In terms of personality, Monsoon was a misanthrope and a nihilist, as he admits to Raiden during their meeting, also believing that the only thing that truly mattered besides war was memes, which he referred to as the "DNA of the soul.". His nihilism was severe enough that he also didn't care if he died, as evidenced by his final actions being his telling Raiden to finish him when meeting defeat. The only time he actually expressed any emotion other than sociopathic hatred was shortly after Raiden succumbed to his Jack the Ripper persona, where he remarked with a horrified and slightly remorseful tone that Raiden "has lost his mind."

Behind the scenes
A Japanese magazine article unveiled some details for the Monsoon fight. One of these details also showed that a Canard Rotor/Wing aircraft would have been involved in the fight.

Monsoon's boss theme is called "The Stains of Time." Its lyrics depict a storm that washes away all reasons for fighting and hope for a peaceful life, and only allows for hatred to remain.

Because of Raiden having succumbed to his Jack the Ripper persona late into Chapter 3, Monsoon is the only boss character to be canonically 'jacked off' in Jack the Ripper mode.

Depending on how the player approaches the battle, Monsoon will either beg Jack to stop or tell him to finish him off.

The development notes included in the Collector's Edition Metal Gear Rising Piggyback guide mentioned that Monsoon's character was strongly derived from that of Psycho Mantis.