Who is the third antichrist after Napolean and Hitler?
Neither of those two people were ‘the Antichrist’, they were simply overly-ambitious dictators (Napoleon), or psychopathic murdering dictators (Hitler). Since apparently all that you require to label someone an antichrist is that they abuse their considerable power in ways that are ultimately destructive, you can feel free to add Stalin, Mao, Saddam Hussein, George W. Bush, Edward I, various Caesars, and the list goes on and on.
