Originally posted by ParmaniacIf we're just talking about DBS Broly, then no, his massive potential was never really explained. The only thing we have to go by is King Vegeta saying that he was a "mutant" among the Saiyans or w/e.
Isn't Broly explained to get stronger the longer he fights?
But in the movie he most definitely kept getting stronger as he fought. Over the course of like 2 hours he went from being weaker than base Vegeta, to requiring SSB Gogeta's most powerful attack just to put him down.