DBZ movies have a very summer movie vibe to them that works and often they try to tie into the story canon of the tv show. The Broly character is a perfect example. On one hand we have his debut movie which gives his backstory and also shows how much of a powerhouse the character is. Then we got the Bio-Broly movie which completely kills any momentum the character had up to this point. This movie shows what NOT to do with a powerful character.