The most notorius Dragon Ball is the Four-Star Dragon Ball, being the one Grandpa Gohan had and Goku kept, also being the one on Gohan's hat. The Namekian Dragon Ball Vegeta, and that was later stolen by Gohan, was also the Four-Star Dragon Ball. In Dragon Ball GT, the only good Shadow Dragon, Nuova Shenron, was the Four-Star Dragon Ball Dragon.