I'm writing this document as a respond to requests from many Muslims and non-Muslims. I found many documents about this subject that contains a lot of false Hadeeths.
Arabic version is also availavble.
Mahdi is a normal man who is going to follow the true Islam. His name will be Muhammad and his father name will be ' A bdullah. Mahdi will be very just and his capital will be Damascus. Mahdi is NOT a prophet but he is the final Rightly Guided Kh alifa . It will end up with a great victory to Muslims against Romans after six years.