There's a clear resemblance between Bibidi and Babidi, but one could also consider Majin Buu to be Bibidi's child. Bibidi explicitly refers to himself as Majin Buu's father, although he uses him ...

Bibidi's relationship with Babidi, a major villain in the Buu Saga, is a common source of confusion for fans. Some believe Babidi to be Bibidi's son, while others see him as a clone of Bibidi.