Madhi will be a descendant of Mohammad. His coming will be accompanied by the raising of a black standard, will be accompanied by the appearance of the Antichrist. And there will be a lunar andd a solar eclipse within the same month of Ramadan. Also, a star with a luminous tail (comet) will rise in the East.
Sufyani: is an evil character that will emerge before the Mahdi from Damascus in Syria. He will be one of many Muslim tyrants that the Mahdi will have to defeat. The Sufyani is not the Dajjal. He will be a tyrant who will spread corruption and mischief on the earth before the Mahdi. He will murder children and rip out the bellies of women. When he hears about the Mahdi, he will send an army to seize and kill him. However the earth will swallow this army before it even reaches the Mahdi. He will be a man with a large head, a pockmarked face, and white spots in his eyes.
Some believe the Sufyani is supposed to be a Western person wearing a cross, although he is munafiqh and is atheist. His army will be the Wahhabis and will sink between Medina and Mecca after suffering defeats from Imam Mahdi's (as) army including one where the Sufyani's army makes an alliance with the Romans. He will only reign for 8 months in Sham, Iraq, and parts of North Africa.
Masikh ad-Dajjal ("the false messiah") is an evil figure who will appear pretending to be the Messiah. He is comparable to the figures of the Antichrist and Armilus in Christian and Jewish eschatology, respectively.
Seventy thousand Scholars wearing turbans will follow the Dajjal. Mohammad is said to have taught "Allah is not one eyed while Anti-christ, Dajjal is blind but one eye will be covered by thick film and the other will be protruding like a bulging out grape". The Bukhari says, "Then I turned my face to see another man with a huge body, red complexion and curly hair and blind in one eye. His eye looked like a protruding out grape." Ali taught, "His right eye will be punctured, and his left eye would be raised to his forehead and will be sparkling like a star. Only the believers will be able to read the word ‘Kufr’ [disbelief], inscribed in bold letters, on his forehead. He will be riding on a huge white coloured 'donkey' who will cover a mile in a single stride." It goes on to say something about feeling the people during famine.
Armilus an anti-Messiah figure in late-period comparable to the Christian Antichrist and Muslim Dijjal, who will conquer Jerusalem and persecute the 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. Armilus is "a king who will arise at the end of time against the Messiah, and will be conquered by him after having brought much distress upon Israel", similar to God in which he defeats the Messiah ben Joseph.
Messiah b. Joseph will appear prior to the coming of Messiah ben David; he will gather the children of Israel around him, march to Jerusalem, and there, after overcoming the hostile powers, reestablish the Temple-worship and set up his own dominion. Thereupon Armilus, according to one group of sources, or God and Magog, according to the other, will appear with their hosts before Jerusalem, wage war against Messiah ben Joseph, and slay him. His corpse, according to one group, will lie unburied in the streets of Jerusalem; according to the other, it will be hidden by the angels with the bodies of the Patriarchs, until Messiah ben David comes to resurrect him.