Pepsi

Pepsi is a brand of carbonated soft drink based in America. Originally formed in 1893 as "Brad's Drink", it was renamed PEPSI-Cola by Caleb Bernham in 1898 after naming his formula, and then eventually to just PEPSI in 1961. Being PepsiCo's flagship product, it eventually spread throughout the world, with countries such as Japan making their own variants such as the Pepsi NEX zero-energy drink in 2006.

Relation to the Metal Gear series
Series creator Hideo Kojima included in the Japanese release of Metal Gear Solid: Peace Walker Pepsi NEX, alongside products from Pepsi's sister product Mountain Dew, Axe Body Spray, Bon Curry, and magazines from Weekly Famitsu, Dengeki PlayStation, Dengeki Games, and Shonen Jump as a joke on product placement. Most of these were removed from the final release.