The child from the future
Future is the child that Bulma ends up having with Vegeta after this one became nice and joined Son Goku’s side in the Dragon Ball Z animated series. He has the characteristic to exist in two versions in the series. Indeed, we first meet him as a young child but there is also another version of him who comes from the Future to warn Goku and the others of a catastrophe that could destroy the planet. He arrives just in time to prevent Goku from catching a disease that would have killed him, which will then allow him to prevent the creation of artificial humans who will take control in the version of the future that this Trunk knows.