XXXG-01H2 Gundam Heavyarms Custom

History
During the military and political chaos occuring in AC 195, pilot Trowa Barton was forced to abandon his XXXG-01H Gundam Heavyarms mobile suit, leaving it behind on Earth when he went back out into space. Over the next few months, the abandoned Heavyarms would find its way into the care of guerilla rebel Sally Po. Sally, realizing the chaos would be concluded in space and that the infamous Gundam pilots would be at the very center of it, would later go into space herself, taking the Gundam with her to return it to its pilot. Aboard the independent battleship Peacemillion, Gundam supporter Howard would upgrade the groundpounding Heavyarms, outfitting it to fight in space.

The improvements made to the Gundam Heavyarms Kai were necessary to give the mobile suit the edge it needed to deliver its firepower against the spacebound forces of White Fang's Virgo II mobile dolls and the mobile suits of the World Nation military. A minor improvement was the addition of several vernier thrusters to give the Heavyarms stability in a zero-gee environment. However, the biggest improvement was the replacement of its single, large beam Gatling gun with a pair of smaller, double-barreled shell-firing Gatling guns, allowing the Heavyarms to split its devastating firepower up and tackle more targets at once.

End Gundam Heavyarms

When Trowa Barton left Earth with the other Gundam pilots, he left his Gundam Heavyarms on Earth, hidden away. Trowa infiltrates Oz and becomes one of their top soldiers and takes the Vayeate as his mobile suit. Later, during the battle with Quatre, Trowa sacrifices him self in hope of bringing Quatre back from insanity (as he is under the control of the infamous ZERO system). Presumed dead, although Quatre wasn’t going to give up looking for him, Trowa turned up over 10 episodes later with memory loss, thus forgetting where he had hidden Heavyarms.

Birth of Heavyarms Kai

Sally Po later finds Heavyarms and gives it to Heero to take up to space. Heavyarms was bought to independent battleship Peacemillion where Gundam supporter Howard would upgrade the Heavyarms for space battle (Heavyarms was the last of the five Gundams to receive this upgrade) thus Gundam Heavyarms Kai is born. Trowa regained his memory when, under recommendation from Heero, he took Wing Zero to save a colony that had been taken over by Oz. The ZERO system gives Trowa a boost to his memories, to the delight of Quatre. Trowa then uses Heavyarms Kai during the battles against White Fang whilst teamed up with the other 4 pilots and then on to the Eve War, the final battle of the series.

Endless Waltz

Trowa uses a Serpent suit during Endless Waltz as he infiltrates the Mariemaia Army (much like he infiltrated Oz a year earlier). Trowa returns to Heavyarms Kai for the battle in Brussels. After the battle, Heavyarms Kai is seen with Deathscythe Hell and Sandrock as the pilots self-detonate them, destroying the Gundams once and for all. Wufei detonates Shelong separately and Wing Zero was destroyed earlier during the battle.