Imam Al-Mahdi (pbuh) Muhammad son of Al-Hassan, it is certain that he is not the unknown [Imam] with regards to those whom claim to be his followers, and as well as with regards to those whom oppose him.
Ahmed Alhasan is the successor and messenger of Imam Al Mahdi (a.s)
Imam Al-Mahdi (pbuh) Muhammad son of Al-Hassan, it is certain that he is not the unknown [Imam] with regards to those whom claim to be his followers, and as well as with regards to those whom oppose him.