Iroquois Pliskin

Lieutenant Junior Grade Iroquois Pliskin (イロコィ・プリスキン) was a Navy SEAL who assisted Raiden during the Manhattan Incident. He didn't appear to be a normal Lieutenant, as SEAL officers normally give orders from the command post using the headphones which Pliskin was seen wearing. Pliskin was knowledgeable on a large variety of military subjects, particularly FOXHOUND, Dead Cell, and the Gurlukovich Mercenaries. Pliskin also used the Marine and SAS slogans: "Semper Fi" and "Who Dares, Wins", respectively. When Pliskin left Peter Stillman and Raiden to begin his bomb disposal of Shell 2, Stillman immediately figured that Pliskin was no SEAL due to the headphones and use of other military organization mottos. Raiden wondered if Pliskin could have been one of the terrorists, but Stilman replied that for some reason, he didn't think so. His prediction would come true as later Pliskin revealed himself to be Solid Snake in disguise.

Raiden first discovered Pliskin when he stumbled upon a room filled with corpses of SEALs who had been killed by Vamp. Raiden was nearly attacked by Vamp, but Pliskin intervened. Vamp then went to attack Pliskin, but stopped short, remarking that Pliskin smelled just like "him".

Iroquois later revealed himself to be Solid Snake, who supposedly died two years prior in the destruction of the U.S.S. Discovery, in disguise.

Trivia
"A SEAL member who infiltrates the Big Shell to suppress a terrorist group threatening to destroy it. He joins forces with Raiden, a new recruit in the special-forces unit called FOXHOUND. Disguised in order to secretly infiltrate the Big Shell, Pliskin is actually Solid Snake."
 * The last name of 'Pliskin' is based on the protagonist in the movie 'Escape From New York', while 'Iroquois' is the Algonquin word for 'black snake.' Snake Plissken was one of the main inspirations for the character of Solid Snake from the beginning of the series;
 * An early rendition of Iroquois Pliskin was going to have blonde hair, much like Solid Snake's now ret-conned original hair color in Metal Gear Solid's briefing files section. The idea made it as far as actual game testing, but was shelved in favor of dark hair. Testers cited a lack of association to Snake from MGS1 as the reason;
 * An unlockable Pliskin trophy is available in Super Smash Bros. Brawl. It has the following description:
 * Snake's Pliskin alter ego was used in Snake Tale D: Dead Man Whispers.
 * Pliskin's attire is almost identical to Snake's appearance in Metal Gear right down to the headset and the colour of his clothing.
 * The appearance of Naked Snake in the Olive Drab camouflage is similar to Pliskin, as well.
 * The British Special Force's motto "Who Dares, Wins" was created as a tribute to The Boss.
 * In DreamMix TV World Fighters, Solid Snake has an alternate costume that makes him look like Pliskin.