Thousands of years before the events of Dragonball Z and Dragonball, early Saiyan warriors invaded Earth. Earth, wasn't advanced at this time and couldn't fight back. But one saiyan warrior named Progresso betrayed his people and helped the human's defeat the evil Saiyans. The the saiyans killed part of the human race which enraged Progresso causing him to transform super saiyan. As a super saiyan, Progresso fought the evil Saiyan ruler King Pepper (an ancestor of Vegeta's.) But to save the humans Progresso sacrificed himself which killed King Pepper along with him. At last the Saiyan's were defeated but the people of Earth mourned over the death of Progresso their hero. They worshipped Progresso over the centuries and told stories of how he had saved mankind. But then they had forsaken Pr