Since the release of Dragon Ball Super, Dragon Ball GT–the previous sequel to Dragon Ball Z–was completely erased from continuity, though it may not stay that way as Dragon Ball Super has subtly set the stage to making GT canon once more.
As opposed to Dragon Ball and Dragon Ball Super, Dragon Ball GT wasn’t originally a manga but was strictly an anime series, a fact that has always hurt its legitimacy as a Dragon Ball continuation. The series followed Goku after he was transformed back into a child following the villainous Pilaf making a mistake while wishing upon the Dragon Balls. Despite being a little kid, Goku is later able to unlock his most powerful form yet: Super Saiyan 4–a more primitive and unique take on the Super Saiyan transformation that pulls inspiration from the animalistic roots of Saiyan heritage. While the form was powerful and uniquely awesome, it was cast aside into the hypothetical void of non-canon Dragon Ball content alongside Super Saiyan 5 and Krillin with a nose. However, one key artifact introduced in Super could change that in an instant.
Related: Dragon Ball Super Teased Vegeta's Ultra Ego Long Before Anyone Realized
In Dragon Ball Super Chapter 16 by Akira Toriyama and Toyotarou, the Supreme Kai of the Tenth Universe, Gowasu, is training his successor, Zamasu, in the ways of being a Supreme Kai both in terms of power and duty. One of the main functions of a Supreme Kai is to watch over all life in the universe and help it thrive while being sure to not get too involved in the natural progression of any particular species. While watching one primitive race, Zamasu doesn’t see their worth and thinks of them as lesser beings because of their barbaric lifestyle. So, Gowasu shows him a way to
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