Grey Fox, Metal Gear Cosplay Costume

Characters
The main focus of the first two Metal Gear games for the MSX dealt with rivalry between protagonist Solid Snake, a rookie member of FOXHOUND, and antagonist Big Boss, who is initially introduced as the commanding officer of FOXHOUND in the original Metal Gear, but is later revealed to be the leader of the South African fortress of Outer Heaven. In the following game, Metal Gear 2: Solid Snake, Big Boss is revealed to be the leader of the hostile nation of Zanzibar Land in Central Asia, confronting Snake for the second time. Supporting characters during this period include fellow FOXHOUND agent Gray Fox, the Metal Gear designer Dr. Pettrovich Madnar, and Outer Heaven resistance leader Kyle Schneider, all of whom were on Snake's side during the first game but became antagonists in the sequel.
Metal Gear Solid elaborates on the storyline of the early games, by revealing Solid Snake's heritage as a genetic clone of Big Boss, created from a secret government project. There it's introduced a new antagonist in the form of Liquid Snake, Snake's long-lost twin brother and leader of FOXHOUND after Snake's retirement. A third Snake brother also exists in the form of Solidus Snake, who is first introduced as the US President in the end of MGS and serves as the main antagonist of Metal Gear Solid 2: Sons of Liberty. During this time, the cast roster expands to include major recurring characters. Revolver Ocelot, a Russian spy, is introduced as an evil henchman to both Liquid and Solidus but is in truth manipulating them to further the agenda of a third party. Metal Gear Rex designer Hal "Otacon" Emmerich is Solid Snake's sidekick and co-founder of the anti-Metal Gear organization Philanthropy. Colonel Roy Campbell is Snake's former commander in FOXHOUND and former confidant to Big Boss. Raiden, the surprise protagonist of Metal Gear Solid 2, is a soldier trained to replicate Solid Snake's success (not unlike the player(s) themselves, in a way; a major facet of Raiden's character).