Son buu

Majin buu and mrs.buu had a son, who now goes by son buu.

Life of majins!
Miss buu and son buu are very strong, and often do not come to earth. Instead, most of the time they stay on planet buu, a planet created by majin buu. Majin buu is known as king buu there, and is very nice to his people.

Family of buu!
Son buu has a sister, named girl buu. However, she is never seen or hardly mentioned throughout dba (DRAGON BALL ADVANCED).