In Metal Gear Solid 2, Raiden was able to talk to Colonel Campbell on the codec for advice, and he was his mission instructor. Towards the end of the game, though, it was revealed that this Colonel was nothing but an elaborate AI, made up of nothing but Raiden’s own expectations and experiences. What tipped Raiden off to it’s AI status was when it started to badly malfunction, saying such gibberish as “I need scissors! 61!”.