Hevy

“Till the last Domino falls!” - Hevy’s last words
Hevy, named for his expertise in the use of heavy weapons, was a clone trooper designated CT-782 who served in the Grand Army of the Republic during the Clone Wars. Bred from the genetic template of the bounty hunter Jango Fett, Hevy trained on the planet Kamino as a clone cadet of Domino Squad. After completing his training, Hevy was deployed to the Rishi Moon which was noted for its strategic location near the Kamino system. Seeking to destroy the facilities that supplied the Republic Military with clones, the Confederacy of Independent Systems attacked the Rishi outpost with commando battle droids, putting Hevy and his squad on the defensive. Aided by Clone Commander Cody and Clone Captain Rex, they attempted to retake Rishi Station but were outnumbered and outgunned. They eventually succeeded in detonating the station, before the entire squad joined up with the 501st Legion.
Following the successful defense of Kamino, and loss of his close friend 99, he joined the ranks of the elite Advanced Recon Commandos as ARC-782, alongside two other Domino Squad members in Echo and Fives. Following the capture of Jedi General Even Piell, Hevy was deployed with a team of Jedi and clones to Lola Sayu in order to rescue the imprisoned General from a facility known as the Citadel. Though the team sustained multiple casualties over the course of the mission, resulting in the death of Piell and the loss of Echo, who was presumed dead, Hevy was among the survivors rescued by Jedi General Plo Koon. Hevy served with the 501st during the Battle of Umbara. During the campaign, he played a key role in the capture of the Umbaran airbase. However, the clones ultimately discovered that their general, the Besalisk Jedi Master Pong Krell, had betrayed the Republic, deceiving his own clone troopers into fighting each other. As a result, Hevy participated in their efforts to capture the fallen Jedi.
While attempting to take Ringo Vinda from the Separatists, Hevy witnessed the death of Tiplar, a Jedi General executed mid-battle by CT-5385 "Tup." A chain of events was set in motion by the preemptive execution of Clone Protocol 66, leading Hevy’s brother Fives to discover a conspiracy involving inhibitor chips, a plot to destroy the Jedi Order, and—to an extent—Supreme Chancellor Sheev Palpatine's connection to it. After being accused by Palpatine as a failed assassin, Fives sought to warn others of the chip, but was confronted by the Coruscant Guard. When a desperate Fives, believing that no one would listen to the information he had learned about the inhibitor chips, drew his weapon on Fox, he was killed by him, dying in Rex's arms.
Hevy, alongside the two remaining Domino Squad members in Cutup and Droidbait, mourned Fives’ loss, and as a preemptive measure, took action to remove their chips in secret from everyone, even Captain Rex. The war waged on, and eventually, during a mission with Clone Force 99, Hevy, along with Rex and his brothers, discovered that Echo was indeed still alive and being held prisoner. Hevy joined the task force sent to rescue his former brother, and helped him escape. The group later freed Anaxes, but Echo chose to go with the Bad Batch, stating he needed a change of paste, and would eventually return to them, before wishing his former squad mates good luck.