Gray Fox

Gray Fox is a semi-recurring character within the Metal Gear franchise. Formerly an operative for the special forces unit, Gray Fox was subjected to gene experimentation, which resulted in him being placed inside an exoskeleton, though he also experienced outbursts of extreme pain before becoming a mercenary. Although he fought against Solid Snake and Big Boss several times, he secretly helped them before his death during the Shadow Moses Incident in 2005.

Gray Fox also appears as an Assist Trophy in Super Smash Bros. Brawl, using his "Cyborg Ninja" appearance as seen in Metal Gear Solid and its remake and is unlocked when Snake is unlocked. When summoned, he runs and jumps across the screen toward other fighters, slashing them multiple times with his katana. He can deflect projectiles, and if he falls off the stage then he jumps back on.