Sixshot, the younger brother of Shockblast, shares a fierce sibling bond yet embodies opposing natures. Where Shockblast charges into berserker rages, Sixshot favors deception, manipulation, and treacherous strikes over head-on combat, making him despised by Autobots and Decepticons alike. Galvatron harbors particular contempt for him, and peers keep their distance. A mechanical engineer often engrossed in tinkering at his control panel, Sixshot pursues self-interest above all, relishing the chaos and frustration he sows. He unwinds by reading comic books featuring catgirls. During imprisonment between the Unicron Battles and the Terrorcons' emergence—a consequence of attempting to reignite civil war despite the Autobot-Decepticon truce—Sixshot occupied a cell block with Megatron's captured forces. Upon hearing of Shockblast's escape, he pressed Snow Cat for details. Snow Cat falsely blamed Optimus Prime for Shockblast's demise, either ignorant or deceitful regarding Galvatron's true role. Vowing revenge against Prime, Sixshot seized a chance to break free alongside Snow Cat. Once aligned with Galvatron, Sixshot applied his engineering skills to craft weaponry, including particle cannons for himself and Shockblast. His efforts to win Galvatron's favor crumbled under repeated insubordination, fueled by an obsession with killing Optimus Prime. He sabotaged battles to hunt Prime, such as downing the Miranda II to wreck Galvatron's arranged duel. Infiltrating an Autobot training simulation, Sixshot coded a digital Shockblast and rigged the program to cripple opponents. When the simulation backfired, he obliterated his digital brother over a petty insult before being overpowered and ejected. Spotting Autobots obstructing an energon pipeline, Sixshot remotely flooded the battlefield with lethal energon gas to eliminate foes. After enduring Galvatron's physical punishments for defiance, he struck back by deactivating energon tower defenses and ignoring orders, aware the systems were locked to his access codes alone. Compelled to reinstate him, Galvatron returned Sixshot to duty. In a later clash, Sixshot triggered a colossal energon explosion that hurled Autobots into orbit but almost annihilated Galvatron and fellow Decepticons, earning him another ban on solo operations. Guarded by Snow Cat, Demolishor, and Mirage, Sixshot tricked them into deserting their post to chase Super Energon. He trapped them in base corridors and raced Galvatron to the Super Energon chamber. Sniping Galvatron with his particle cannon, Sixshot inflicted grave wounds until Scorponok intervened, buying time for Galvatron to submerge in the Super Energon. Transformed into a towering, empowered titan, Galvatron accused Sixshot of treason. Though Sixshot lied and pleaded, Galvatron crushed him to death. His dying words to Scorponok proclaimed newfound freedom, but Scorponok judged the price excessive. Sixshot died unaware Galvatron—not Optimus Prime—murdered Shockblast. In other media, Sixshot features among Decepticons assaulting Metroplex in the Kre-O online comic.