Every Dragon Ball fan loves the intense clashes of unfathomable power that the series is known for, but none of that would be remotely close to possible without great villains. In fact, perhaps even more than most series, villains are important to Dragon Ball. Some of DB's greatest characters are villains, after all, and the villain-turned-hero theme prevalent throughout the series has turned some of those villains into anime's most beloved heroes.
Source：https://www.cbr.com/dragon-ball-greatest-villains-ranked/
