[quote=@Genon]
<Snipped quote by Weird Tales>

...Oh. You mentioned that we were [i]replacing[/i] the Z-Fighters, but I wasn't sure if that applied to OG Dragonball. I probably should have confirmed that ahead of time. In any event, who destroyed the RRA if that's the case? Who killed King Piccolo? Did someone else accomplish all of Goku's feats?
[/quote]

The other Z fighters exist so they dealt with king Piccolo