Head, arms: Speed Metal
Torso: Ace
Upper legs: Storm Shadow ?
Lower legs: Wild Weasel

Heavy Metal made his way into the Army via Brooklyn. He grew up the Williamsburg neighborhood before it became a hipster mecca. When THEY attacked Heavy Metal didn't hesitate he took his Mauler and attempted to make his way to his family in Brooklyn.

Still living in the apartment he was raised in his elderly parents were all he could think of. He didn't make it far before his armored chariot ran out of fuel, to this day he still mourns his parents coming to the realization that they most likely didn't survive the nuclear weapon used in an attempt to "cleanse" the city.