Iron Man armor (Mark XVII)

Main system
 The Mark XVII Artillery Level RT Suit (nicknamed Heartbreaker) was created after the battle of New York. It's name comes from its oversized chest RT.

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Upgrades
It has a bulkier but fit appearance, because of it's thicker multiple-layered titanium platings, and has an oversized chest repulsor RT built within the suit's armored chest area, which is it's most unique and notable feature, that can shoot powerful blast. The mask was based off of the Mark XI. It shoots a powerful Unibeam that has a wide or narrow range and can fire faster. It can also generate a force field for protection.

Iron Man 3
The suit was created after the New York battle. Tony realized that there couldn't be one suit that could do anything, so he started building suits specializing in certain areas. Heartbreaker was built and put into the Hall of Armor with the Iron Legion. When the "House Party Protocol" was ordered, it lead The suits to Florida and fought in the Extremis battle. When Red Snapper was in trouble, Tony ordered Heartbreaker to help Snapper while the suit was covered in Extremis soldiers, but it arrived too late, as an Extremis soldier ripped off it's face plate, sending it flying into the oil rig. It then came and picked up Rhody, seeing as all the suits were only coated to Tony. However, a Extremis soldier jumped onto the suit and Heartbreaker was forced to drop Rhody. It was either destroyed by the "Clean Slate Protocol" or the Extremis soldiers.

Trivia

 * Heartbreaker appeared in the Club Penguins Game: The Avengers.
 * It is one of the armors that can be seen in the theatrical poster for the movie
 * It is probably the leader of the Iron Legion because it was leading them to Florida and first to arrive at the battle.