Photos: Did ISIS terrifying 'Bulldozer' executioner just reveal his face while beheading 3 Peshmerga prisoners?

The 20-stone monster known only as the Bulldozer who is one of ISIS terror group's bloodiest executioners might have just exposed his identity after a bearded Islamic State militant beheaded kneeling prisoners in the middle of a busy street in Iraq.

But the 'Bulldozer' has never been known to show his face on camera unlike this extremist who made no attempt to hide his identity. Before slitting their throats and then beheading them, he rants to the camera, threatening both the Kurdish Peshmerga forces attacking IS and the Kurdish president Masoud Barzani.

A third man was executed in the same way before the killer paraded the head of one of his victims around. The Bulldozer has beheaded men and severed the limbs of children. One 14-year-old Syrian boy called Omar has told how the ISIS extremist, a towering figure in black, cut off his hand and foot because he refused to join IS.