Future Uub (Nikon23)

Future Uub is a Earthling and due to being the positive reincarnation of the completely evil Future Kid Buu, his name is also a result of reversing "Buu'.

Early Life:
Future Uub is from a tropical island and he is the oldest of five siblings. he works hard to take care of his family who are staring and poor.

Becoming a Z Fighter:
as a young boy at the age of ten, Uub is first seen at the 28th World Maqrtial Arts Tournament im the 810 Age, which takes place after the defeat of Future Kid Buu. it is revealed that Future Uub is actually the human reincarnation form of Kid Buu, who was born right after Future Kid Buu's death. he is trained by Future Gohan and becomes a Z Fighter, helping combat enemies that threaten the universe.

General Copper Saga through Super Android 22 Saga:
After the appearance of Android 23, he and most of the Z fighter of the future are killed, but are later revived the Namekian Dragon Balls.