He is the ninja that defined the G.I Joe series and one of my favorite characters in the Marvel comic book series, Snake Eyes is one of the original GI Joe team. The mysterious Snake Eyes character as written by Larry Hama served as a recon Ranger in the Vietnam War and later trained as a ninja with Storm Shadow in Japan. After a helicopter crash his face was severely burned and disfigured so he became a masked warrior who never spoke.
This version of Snake eyes is based on the 1989 3.75" action figure, in my opinion one of the best figures of the entire line. The more unique pieces of the figure were custom crafted such as the mask, glasses, wrist gauntlets, tactical vest, and double trench knives.
Select an image to view details and notes on the one-sixth scale Snake Eyes action figure.
Ninja. Commando. The most interesting character in the series doesn't speak and wears an expressionless mask.
The second version of Snake Eyes with the visor is probably the more popular version of the character but I like the third version as well because of the original Marvel comic book series. The origin of this uniform actually comes into play in issue 95 as part of the Snake Eyes Trilogy which explores a little bit of his past in connection with some of the original characters in the GI Joe universe. While escaping a torture chamber in the Cobra consulate embassy, Snake Eyes turns the tables on the torturers and from them assembles this uniform and as a lone warrior. Driven by fury, Snake Eyes assaulted and ultimately brought down the entire skyscraper.
This is how I normally display Snake Eyes, rappelling on a line as seen in the old but famous Marvel Comics GI Joe issue 21, "Silent Interlude."
Artwork of Snake Eyes in a parachute insertion from the Marvel Comics series, issue 104.
One of the more difficult parts to make of this figure was the mask. It needed to be form fitting and handsewn. Most masks available are made with nylon material which has a shine to them that looks out of scale. 
Success is not final, failure is not fatal: it is the courage to continue that counts.