There are several unused voice clips that suggest that there were going to be more characters in Dragon Universe than there actually are. Notably, Kid Goku's Dragon Universe seemed to have involved him finding a time machine that takes him to the current Dragon Ball Z era, fighting Yamcha, Krillin, Tien Shinhan, Piccolo (who he thinks is still King Piccolo), maybe Vegeta, Teen Gohan (who thinks he stole the name from his grandfather) and Broly.