In Dragon Ball Z, all Z warriors died in the end of the end of the world. That is why the young Saiyan decided to travel against time to warn people about the appearance of Android 17 and 18 created by Dr. Gero and Red Ribbon Army.
In the end of the world in Dragon Ball, Goku died of heart disease, making him unable to fight anymore.
While Vegeta, Piccolo, Tien Shin Han, Krillin, Master Roshi, Yamcha and Chaoz fell on the battlefield, in the fight against the two Android. Later, Gohan – the only survivor, was defeated by these two strong warriors.
Finally, Trunks thanks to the machine built by Mother Bulma, was able to travel to the past to recount everything that happened in the future to the group of warriors z.
But there is an event that many people do not notice. The reason the cell exists in the same reality is the result of this biologist, in his first shape, took the trunks to steal the time machine and can travel to the past, suitable Best with the number 17 and 18, therefore achieve their perfect shape.
This proves that even Trunks died in the end of the world, leaving only one in the original squad of the survival series: it was Bulma.
It is no coincidence that the most important person in Dragon Ball is the only survivor.
Fans always appreciate the value that Goku's best friend deserves. Without Bulma, there will be no Radar to search for Dragon Ball, there will be no spacecraft to travel to Namek's planet, or gravity machine, what is necessary for Goku and Vegeta to achieve super Saiyan transformation status.
Bulma future in Dragon Ball Z
There is a future, but the future in the flow of time does not experience any change, where Bulma is the only survivor. We know this must be very painful for her, but this is a rare achievement in a world with incredible power.