Al-Dajjal, which translates roughly to "the deceiver" is the Moslem version of the Antichrist. He appears not in the Koran but in the Hadith. He shows up near the end of the world when all the Christians are fighting the Moslems. He is described as being short, fat, blind in one eye and the word "kafir" will be visible on his forehead to the true believers. He eventually gets his ass kicked by Isa, better known as Jesus, who has, surprisingly, converted to Islam.