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Obama is the Antichrist.
No, they are not an Antichrist band.
No, the Antichrist is never specifically named. In the bible it does give you a description of what the Antichrist should look like and that is supposed to help you figure out who the Antichrist is.
Antichrist Superstar was created in 1995.
The Antichrist - book - was created in 1895.