DejaVuPortableOps Cropped2 "Hmm, I don't remember that one. It mustn't be that important."
This article is about a subject from outside Hideo Kojima's core "Metal Gear Saga." It has some level of canonicity within the continuity, but reader discretion is advised.[?]

In some cases of full-body military-grade cyborgs with custom bodies, spare bodies were developed for the cyborg in question. They were usually utilized for a quick recovery, if their original bodies sustained enough damage to be inoperable, so long as the brain was salvageable. However, they could also be programmed with AIs and be full androids otherwise, with their styles copied for the most part. However, a downside was that the AI usually didn't copy the abilities perfectly.

The Desperado Enforcement LLC. captains and Winds of Destruction cyborgs Mistral and Monsoon possessed spare bodies. However, after their deaths during the Abkhazian Coup and the Raid in Denver, respectively, they were instead controlled via AIs to act as a final defense against World Marshal Inc.'s Headquarter building's server room, which contained the brain units of various orphans undergoing the Sears Program, when Raiden breached the building to retrieve the brain canisters.

The Mistral spare body attacked first, with Raiden briefly being shocked at Mistral's apparent survival until Doktor informed him of its true nature as an AI-controlled spare body. After defeating it, the Monsoon body attacked Raiden next, only to meet the same fate as the Mistral body double.