The Antichrist as antithesis to the Christ

Jesus Christ was sent by God as Messiah to the Children of Israel, confirming what was sent before in Torah, but with special emphasis on spirituality as the Rabbis and the Pharisees at the time were concentrating on the legal issues, neglecting matters of the heart and relationship with God.
The Jews with their arrogance rejected him, as they had rejected countless of prophets in the past. And eventually their attempt to publicly execute Jesus, however God through His divine mercy saved Jesus from crucifixion and turned someone else into his look alike and the person was crucified, and subsequently deified into 'Son of God' for the centuries to come.
The Quran, sent to the Prophet Muhammad confirmed the attempted crucifixion on Jesus and cleared the Jews from guilt of being killers of Christ.
Filled with guilt of thinking that they have eliminated Christ Jesus, the Rabbis had for centuries sought to replace Jesus with another 'Messiah', after they themselves through Paul and Simon Magus succeeded in inventing 'The Trinity' myth and subsequently creating 'Christianity' itself as a cult and later on an accepted religion, making the original Unitarian followers of Christ, like Arius and others, deviant and heretics.
This alternative 'Messiah' to Jesus, is now being awaited by the highest Rabbis in Israel and other parts of the Jewry. Who is this 'Messiah'?