Mark Gregory was born Marco De Gregorio in Rome. After appearing in a number of Italian exploitation films, such as the Thunder trilogy and Castellari's Bronx films, he disappeared from the big screen. In 2013 he committed suicide.
Delta Force Commando
Afghanistan: The Last War Bus
Thunder
Adam and Eve
Thunder III
Thunder II
Ten Zan - Ultimate Mission
Just A Damned Soldier
1990: The Bronx Warriors
Escape from the Bronx