Bardock

Father: Unknown
Born: Vegeta I think
Race: Saiyan
Bardock was once a very strong Saiyan and went around with his team of Saiyans destroying the inhabitants of planets to sell to Frieza. As time goes on he realizes that Frieza has become a out of hand and as it was he had just taken out King Vegeta due to a revolt from him and his men. Bardock tells his men but they just laugh. He quickly flew to to Frieza's ship hovering around the planet Vegeta. He battles a hoard of Frieza's men and manages to take them all on. But Frieza makes an enormous energy ball and just laughs. As soon as it is to full size he throughs it at Bardock and the planet Vegeta. Killing Bardock, the planet Vegeta and all of his henchmen.
Bardock is the Saiyan, and true father to Goku (Kakarot). He was very skilled and powerful when he was alive and after Goku knew about his dad I dont know why he didnt try and wish him back. I think he should of. Bardock could very well be one of the most powerful true Saiyans ever.