Armilus, in Jewish legends, an enemy who will conquer Jerusalem and persecute Jews until his final defeat at the hands of God or the true Messiah. His inevitable destruction symbolizes the ultimate victory of good over evil in the messianic era. Some sources depict Armilus as partially deaf and partially maimed, the frightful offspring of Satan or evil creatures. Parallel legends exist in the figures of Antichrist and of Ahriman, the Persian god of evil.