Buu reforms after the destruction of the earth, and goes on a rampage throughout the galaxy. He goes from planet to planet, looking for Goku and Vegeta, and then destroys the place when he doesn't find them. He goes to the Grand Kai's planet, and sta... (more)rts to destroy everyone there. Supreme Kai offers Goku and Vegeta his fusion earrings, but they both refuse them. They raise their power levels so Buu will know where to find them. Buu appears on the world of the Kais.