Who is the Antichrist (Al-Masih Ad-Dajjal)?

The Antichrist (Dajjal) is a man from the children of Adam, blind in his right eye, with "Kafir" (disbeliever) written between his eyes. The Dajjal has the ability to overturn realities, with the permission of Allah, and he has many signs, among them that he has water and fire; his fire is cold water, and his water is fire. The Dajjal tests people with his ability to bring down rain, make crops grow, and extract the treasures of the earth. He will kill a young man and then bring him back to life. The Dajjal cannot enter Mecca and Medina, as angels protect them. The Messiah, Jesus son of Mary, will kill the Dajjal.