The Bible and the Mahdi

What do Muslims believe regarding a future Mahdi? Does the Bible teach the coming of such a Mahdi? How do the Koran and the Bible differ on the personages known as the beast and the false prophet, or the Masih al Dajal and the Sufyani? Do the Muslims believe in Jesus or Isa, and if so, in what way? Do Muslims believe that Jesus will die again after His return?