Megiddo is a mysterious entity that has vast amounts of power and influence around the world, from Washington to Moscow. The group is largely clandestine, with only a handful of people being aware of its existence.
Third Echelon ConspiracyEdit
Sam Fisher discovers that Tom Reed was a mole working for Megiddo. Reed had a plan to assassinate President Patricia Caldwell due to her refusal to cooperate with Megiddo so that Vice President Calvin Samson (also working for Megiddo) could take her place. Megiddo was controlling all the antagonistic forces that Fisher had to contend with.
Despite its limited mention, Megiddo is one of the most prominent antagonistic entities in the game. When Sam interrogates Galliard at the Lincoln Memorial in Washington, D.C., he learns that Megiddo controls a number of different places such as Beijing and Moscow, but before he can elaborate he is assassinated by a shooter working for Megiddo to protect its identity. The shooter runs and Sam pursues him, but the chase ends when the shooter is killed in a car bomb. It is assumed that the car bomb was meant to prevent the shooter from revealing who Megiddo is.