Dr. Kio Marv was a Czech scientist. In 1999 during the energy crisis, he invented of the OILIX formula, a new species of algae, that could produce petroleum-grade hydrocarbons with little expense and effort. He presented the algae to the World Energy Conference in Prague, and was on his way to a U.S demonstration when he was taken hostage en route by agents of Zanzibar Land.FOXHOUND carried out a rescue operation immediately, and Solid Snake was called in to rescue Dr. Marv from Zanzibar Land's clutches.
During his captivity, Dr. Marv was able to send out a carrier pigeon with his contact frequency written on it. This pigeon was found by Solid Snake, who was able to contact Dr. Marv. Unfortunately, Snake didn't speak Czech or Slovakian so he couldn't understand what the scientist was saying. Fortunately Snake was able to make contact with Marv's bodyguard, Gustava Heffner. Snake eventually reached the prison where Dr. Marv was being held, only to find that he'd been killed by his old friend, Dr. Madnar. However, he'd to been able to hide the OILIX from his captors in an MSX cartridge, allowing Snake to procure the data and deliver it to his superiors.
Dr. Marv's invention ended the world's energy crisis, but it ultimately cost him his life.
