While he wasn't very strong in retrospect, he was the main villain of his very short story arc, and led to Goku being killed. He's also quite a bit older than Goku. Raditz appears in Dragon Ball ...

The first serious main villain in Dragon Ball was King Piccolo. Prior to him, Pilaf and Commander Red had both been comic relief villains, Mercenary Tao was ultimately just a memorable henchman ...

Despite his status as a non-canon character, Broly has seen just as much representation in media as the three main villains of Dragon Ball Z. But with the release of the movie Dragon Ball Super ...