Gray Fox
03
Gray Fox's remains, blown apart by a landmine, were secretly recovered by the Patriots.
Under Dr. Clark's treatment, Gray Fox was brought back to life, pumped full of drugs, and used as an experimental gene therapy test subject as part of Genome Soldier research. Gray Fox slaughtered Dr. Clark, escaped from the research facility, and began to hunt down Solid Snake, leading him to infiltrate Shadow Moses Island.
Armed with stealth camouflage and a reinforced exoskeleton, Gray Fox plunged Shadow Moses Island into panic under the guise of the Cyborg Ninja. He cut off Revolver Ocelot's dominant right hand, and orchestrated a meeting with Solid Snake through Codec communications under the alias "Deepthroat". His reunion with Solid Snake took place before Metal Gear REX. The mech severed Gray Fox's left arm, while Gray Fox managed to destroy its radome (radar), which served as REX's eyes. Ultimately, he was trampled by REX, bringing an end to his turbulent life.