Majin-Buu Transforms
Unknown to the others, Buu secretly separates part of his back, and the two pink blobs creep around behind the others. As soon as Goten and Trunks fuse, one of the blobs encases the Saiyan. Piccolo, too, has been covered by a pink blob. Buu calls each of the blobs back to him, and they combine to form a Super Buu that's even stronger than he was before. Buu and Gohan start to fight, and it's clear that Super Buu has the advantage. Gohan seems unable to keep up with Buu's new speed and strength. Buu taunts Gohan by telling him what his three friends that were absorbed think of him.
Aired 24/05/1995EP 265 - Majin-Buu Transforms

Dragon Ball Z
Goku is back with his new son, Gohan, but just when things are getting settled down, the adventures continue. Whether he is facing enemies such as Freeza, Cell, or Boo, Goku is proven to be an elite of his own and discovers his race, Saiyan. He meets many new people, gaining allies as well as enemies, as he still finds time to raise a family and be the happy-go-lucky Saiyan he is.
(Source: Anime News Network)