The Mark XVII Armor (codenamed Heartbreaker) was Tony Stark's seventeenth Iron Man suit and was specialized in artillery level repulsor technology. It was a part of the Iron Legion. It was destroyed by the Clean Slate Protocol activated by Tony Stark.
The Heartbreaker Armor was made by Tony Stark after the Battle of New York. As part of the Iron Legion, the Heartbreaker Armor was used by Iron Man and War Machine during their fight against Aldrich Killian and his Extremis soldiers.
The battle did not go well for Heartbreaker. It first attempted to save Red Snapper from destruction and failed. After Stark donned the Silver Centurion, Heartbreaker was sent to carry Rhodes to the Iron Patriot Armor. However, as they were in flight, Heartbreaker was attacked and Rhodes fell. The armor managed to escape the Extremis Soldiers, it was later destroyed by the "Clean Slate" protocol.
The Heartbreaker armor has an oversized chest RT, which can fire powerful blasts. The Repulsor Technology input allows it to fire narrow or wide beams and generate a repulsor shield for protection, it can also be used at maximum power with the Tesseract core, resulting in extreme destruction.
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