@IAmGarfield Bardock was first introduced in October 1990 in Bardock: The Father of Goku. Later, he was integrated into the Manga by Toriyama himself. For the anime, he became canon in Dragon Ball Super: Broly, but he’s been canon in the manga for years now. Even if that wasn’t the case, it’s hard to do anything for Goku if you’re dead. Goku was literally a newborn baby when he was sent away and when Frieza destroyed Planet Vegeta. I’d say Bardock and Gine did plenty for him when they, not only saved his life, but sent him to a planet where Frieza and his army had no influence.