Bardock is the father of Goku and Raditz. He is married to Gine. His story was told in Dragon Ball Z: Bardock-The Father of Goku. He is a Saiyan that is nicer than most, but still likes to battle strong opponents. He shares the same hair as Goku, but looks more like his other son, Raditz.Bardock died trying to save his planet from destruction from Freeza, a villain that Goku later fights and defeats. Freeza was affraid that one day there would be a Saiyan that was stronger than him, so he destroyed their planet. His nightmare came true anyway when Goku defeated him.
Gine
Gine is the mother of Goku and Raditz and is married to Bardock. She was actually just revealed in March 2014 and made an appearance in Dragon Ball Minus which was a short story written by Akira Toriyama, the artist and writer for Dragon Ball and Dragon Ball Z. Of course, it is only written in Japanese now and there is no word if it will ever come to the states or not. She is more gentle-hearted than other Saiyans, because she did not like fighting. She died when Frieza destroyed the Saiyan planet.