Philanthropy is an anti-proliferation group started by Nastasha Romanenko and Otacon. In Metal Gear Solid 2: Sons of Liberty, Solid Snake was tasked to find and snap photos of the new Metal Gear held by the United States Marines in a cargo vessel Discovery. Philanthropy again appeared during the Big Shell Incident, with the help of Raiden. They uncovered the plans by Solidus Snake and Revolver Ocelot. In Metal Gear Solid 4: Guns of the Patriots, it appears the Philanthropy could have been dissolved or unactive for the time being. Solid Snake seems that he is no longer with the group as he was hired on by Colonel Campbell. It is unknown whether Otacon still is a member of Philanthropy. Mei Ling helps out with Philanthropy in finding leaks about Metal Gears around the world, but as of now, it is unknown whether she was an official member or not. Emma Emmerich died on the Big Shell but she had contributed in helping with Philanthropy. As for Raiden, it is unknown whether he is part of Philanthropy or not, as of now, it is also unknown if he is acting alone or part of Philanthropy in Metal Gear Solid 4.
Nastasha Romanenko + Otacon | |---- Solid Snake (recruited) | |---- Mei Ling (unofficial) | Emma Emmerich (unofficial) + Raiden (unofficial) | DECEASED