That being said, Dragon Ball has put a surprising amount of focus on Bardock in recent years, whether it’s through Dragon Ball Super: Broly’s prologue, the Dragon Ball: Episode of Bardock special, or the character’s extended flashback saga during Goku’s manga battle against Granolah and Gas. Bardock represents Dragon Ball and Goku’s past, but he continues to influence the franchise’s future in major ways. Accordingly, there are certain details about this special Saiyan that slip through the cracks and are unknown to general Dragon Ball audiences.
Source：https://www.cbr.com/dragon-ball-z-bardock-facts/
