Dragon Ball fans out there, please explain why Goku says that Uub is related to Maitibu. Please solve my childhood mystery.
We know that warriors can recognize someone's aura by feeling it.
In Chapter 519, Goku asks Buu to use his magic to fight Uub. But we all know Goku isn't the smart type, he just has this feeling. Goku is the one who fought the most with Buu, its probably normal he's the one who's able to recognize him.
Uub is the reincarnation of Kid Buu
He is the Human reincarnation of Kid Buu. Due to being the positive reincarnation of the completely evil Kid Buu, his name is a result of reversing "Buu".