Greatshot/JG1
A retcon in the 2018 Transformers Legends manga "Bonus Edition Vol. EX" canonized the long-standing Japanese fan theory that Greatshot and Sixshot were the same person in the Japanese Generation 1 cartoon continuity. For their exploits in continuities where they are separate individuals, see their respective pages.
Fiction
Japanese Generation 1 cartoon continuity
Legends comic

In 2021, the Decepticon Sixshot worked with Daniel to break Star Saber out of the Planet Micro Satellite Penitentiary by surrendering himself to the inhabitants of Micro, who removed his head and converted it into a Micro-sized robot in order to weaken him. Having foreseen this, however, Sixshot had already converted his body into a transtector that he and Daniel used to escape to the Legends World with Star Saber. There they hid out with Chromedome, who was willing to put his grudge against Sixshot aside as long as the ninja helped him with his manga artist career, and when a resurrected Ultra Magnus came to recapture Star Saber, Sixshot battled and defeated him once more. His victory was short-lived, however, as he was then impaled from behind by Nightbird for breaking the Six Clan's law to remain hidden. While he accepted death as punishment for his evil deeds and said his goodbyes to Daniel, he ended up surviving the explosion of his transtector and instead disappeared into the shadows. Hearing of the Legends World's power to bring back the dead, he vowed to repay Chromedome by resurrecting Abel and Jack and sought out Giga to learn more. Bonus Edition Vol. 50
To thank Sixshot for rescuing him, Star Saber gave Sixshot a new transtector, encouraging him to use it to become "Greatshot", to maintain the illusion that he was dead and avoid the Six Clan's wrath. Sixshot took to the idea, but first went to Giga so that they could use the Shinchōkon in the Legends World to resurrect Jack. However, his resurrection required that Sixshot give up his body and thus his soul was transferred to the Greatshot transtector while the Headmaster became an new incarnation of Jack. The two returned to the G1 World in 2022, where they worked in concert with Star Saber's Autobots to put a final end to the Concurrence.
Greatshot eventually received his own head, allowing Jack and Greatshot to become fully independent beings. In 2026, Greatshot received potentially fatal injuries in the Silvart War, but was saved by the timely appearance of his Autobot and human friends, who had been searching for him since his disappearance the year prior. Bonus Edition Vol. EX
Train Wars
After Greatshot left the Second Army, Goshooter became the team's third commander. Train Wars: Goshooter & Shūta Gō Chapter

