Bandana

The Bandana is a recurring piece of cloth worn around the head of many different people. The Boss was first seen wearing this headband and her pupil Naked Snake inadvertantly grabbed it from her as she threw him from a bridge in Dolinovodno during her defection to the Soviet Union. Naked Snake, later known as Big Boss, then wore it for a time, but took it off after his formation of Outer Heaven.

Solid Snake also wore a bandana during Operation Intrude N313. Gray Fox and Holly White also wore bandanas during the Zanzibar Land Uprising.

In 2014, Old Snake is seen still wearing his trademark bandana, albeit a bit faded with age, reflecting Snake's equally aged look. Meryl Silverburgh, now the commander of Rat Patrol 01, also wears a bandana.

Metal Gear and Metal Gear 2: Solid Snake
In the re-releases of Metal Gear and Metal Gear 2: Solid Snake, the Bandana can be unlocked by beating the game.

Metal Gear Solid
The Bandana can be obtained as a secret item in Metal Gear Solid. If the player does not submit to Ocelot's torture earlier in the game, then Meryl will give Snake the Bandana in the game's closing scene. When the player starts a new game on the same save file, the Bandana will be in the inventory. Wearing the Bandana gives Solid Snake infinite ammo.

Metal Gear Solid 2: Sons of Liberty
In this game, only Solid Snake can use the Bandana, during the Tanker chapter. It can be obtained after collecting 46 Dog Tags. Wearing it, as in other games, gives Snake infinite ammo. Raiden's equivalent of the Bandana is the Brown Wig.

Metal Gear Solid 4: Guns of the Patriots
The Bandana is also a secret item in Metal Gear Solid 4: Guns of the Patriots. It can be obtained by going through an entire game without killing a single person. Alternatively, in can be bought from Drebin's shop for 5,000,000 DP, following completion. The price is reduced to 2,500,000 DP only during Act 5.