For someone obsessed with achieving increasingly powerful transformations through intense training and solitary focus, vegetarian was unattainable Super Xayda 4 (arguably the strongest change in .) Dragon ball history) of its own, as it was Bulma who unlocked this top level Super Saiyan form, not Vegeta.
Vegeta’s power level growth throughout Dragon Ball is marked by blood, sweat, and tears starting from his training to become a Super Saiyan after witnessing two other Saiyans. achieve the transformation before he can (those two are Goku and Future Trunks). After a long period of training in a hostile world, battling deadly asteroids dominating him, Vegeta has finally found the strength needed to unlock the Super Saiyan. After gaining enough power to eventually reach Super Saiyan 2, Vegeta’s next big power-up will be marked by his ascension into Super Saiyan God in the Dragon Ball Super continuum. While Goku unlocks this transition first, he needs the help of an energy-sharing ritual while Vegeta does it all on his own. Unfortunately, all of the hard work Vegeta put in to get his previous transformations went unseen with Super Saiyan 4 – in fact, Vegeta didn’t actually do anything. nothing.
Bulma did all the work to unlock Super Saiyan 4 for Vegeta
In Dragon Ball GT episode 55 (written by Atsushi Maekawa, directed by Osamu Kasai, produced by Toei Animation), Goku and Pan are fighting the strongest Dark Dragon, while Vegeta sits at home, thinking about Goku how the gap widened. between their power levels by reaching Super Saiyan 4. However, after looking back on his life and realizing how hard he worked to become as strong as he is today Vegeta decides that he doesn’t mind Goku being better than him anymore, and that he’s happy just seeing how strong he can become without comparing himself to Goku. But, that all changed at the end of the episode when Bulma said she could turn him into Super Saiyan 4, with no training needed – and she proved she could.
Back in GT’s Baby Saga, Bulma was given mind control to help the combination of Baby and Vegeta (who became known as Baby-Vegeta) to become the Golden Great Ape to defeat SSJ4 Goku. As fans knew at the time, being the Golden Great Ape and then controlling one’s mind in that form is how a Saiyan becomes a Super Saiyan 4. Baby-Vegeta doesn’t become a Super Saiyan 4 because of the Baby’s presence in Vegeta will ‘not allow a transformation, but the machine Bulma built to harness and raise the Bruits Wave can be reused exclusively for Vegeta–and this time, that Golden Great Ape transformation. will lead to Super Saiyan 4 because Vegeta won’t have the parasitic aliens stopping it as well as the fact that he proved in DBZ that he can control his Great Ape form with ease. .
The coolest thing about Vegeta’s transformation into Super Saiyan 4 is that he doesn’t need to level up his power to get there. Every time Vegeta needs to unlock a new form in Dragon ballhe had to push himself harder than ever, but in this case, that power was always within him, it just needed to be harnessed by Bulma’s equipment–and that’s why right as such vegetarian never really unlocked Super Xayda 4, Bulma do.