John Henry Eden

John Henry Eden is the president of the Enclave in Fallout 3. He is first heard on the Enclave Radio station on a propaganda radio show where he talks about the greatness of the country, speaks of the glory of the old world, and ensures the people of the wasteland that the Enclave is helping them and working on rebuilding the country. His voice and personality is similar to real-life U.S. presidents such as Richard Nixon and Bill Clinton.

Towards the end of the game, the Lone Wanderer encounters John Henry Eden in the Enclave's secret base at "Raven Rock", where it is revealed that President Eden is not a real person at all but actually a computer AI programmed with a database of American history, that was originally just the maintenance system for Raven Rock but became the "President" after the real Enclave president from Fallout 2 was killed. However, the rest of the Enclave does not know this, except for the other main leader in the game, Colonel Autumn.

When talking to the player, President Eden reveals his true ultimate plan for the Enclave: to poison the water purifier at the Jefferson Memorial with a special F.E.V. virus that will eventually kill all the "mutants" who aren't purely human anymore. What Eden is incapable of realizing as a computer is that everyone in the wasteland except the Enclave has already been corrupted by radiation, and doing this would essentially kill everyone in the Capital Wasteland except the Enclave. He wants the player to take the sample of the virus and use it in the purifier when they retake it from the Enclave with the Brotherhood of Steel. Of course, the only reason any player would do this is if they were simply trying to be deliberately evil, and even Colonel Autumn knows better than to do such a thing, which is why he's trying to stop you even if you are doing what Eden says.

Otherwise, the player should destroy President Eden, which is actually very easy to do: you can present him with a logic error that makes him short-circuit with a science skill, use the self-destruct code for Raven Rock if you found it, or use speech skill to convince him that he doesn't know what he's doing, to shut President Eden down and destroy Raven Rock.