<P> Due to overuse of the Dragon Balls, seven Shadow Dragons are then created . All but the most powerful, Syn Shenron, are defeated . Syn Shenron appears to be losing until he absorbs the Dragon Balls and gains more power, becoming Omega Shenron and overwhelming Goku . Goku is about to sacrifice himself to destroy the evil dragon, but then Vegeta becomes a Super Saiyan 4, thanks to Bulma's new device, the Blutz Wave Generator . Goku and Vegeta fuse, using the Fusion Dance technique, creating Gogeta, who uses his immense power to taunt Omega Shenron . However, after being too confident in their ability to defeat Omega Shenron, they use up too much time in an attempt to embarrass Omega Shenron, their fusion then ends and Goku loses his Super Saiyan 4 form along with Vegeta . Eventually, using the energy of every living being in the universe, Goku makes a Spirit Bomb powerful enough to destroy Omega Shenron, and end the battle . </P> <P> The real Shenlong appears to grant Goku and his friends one last wish, and then proceeds to disappear--along with Goku and the Dragon Balls . Several decades later, Goku's great - great - grandson, Goku Jr., participates in the World Tournament against Vegeta Jr., as his grandmother Pan cheers for him . Pan then sees Goku and tries to approach him but Goku disappears into the crowd . Goku then leaves the World Tournament with a flashback of his timeline . After the flashback of his timeline ends, Goku then catches his power pole and rides off on his Flying Nimbus cloud . </P> <P> Unlike the previous anime series in the Dragon Ball franchise, Dragon Ball GT does not adapt the manga series written by Akira Toriyama, but tells an original story conceived by the Toei Animation staff using the same characters and universe from the original Dragon Ball manga and it continues the story where Dragon Ball Z had left off . Toriyama did, however, come up with the Dragon Ball GT name, which stands for "Grand Touring" in reference to the series having the characters travel through the universe, and designed the appearances of the main cast . Toriyama himself referred to GT as a "side story of the original Dragon Ball". </P> <P> Chief character designer Katsuyoshi Nakatsuru said he agonized over designing Super Saiyan 4 Goku, which was the idea of the show's producers, questioning whether it was necessary to go further with the transformations . Because Super Saiyan 4 is brought about while in a Saiyan's Ōzaru (大 猿, "Great Ape") form, he made the hair more "wild" and covered Goku's body in red fur . There was only a single final draft of the character, although Nakatsuru did consider making the hair blond, he ended up choosing black as it provides more contrast with the red fur . </P>

What does the gt stand for in dragon ball gt