Anime movies' main villains are often forgettable. They may be hyped up for the movie they’re in through heavy advertising. However, they’re quickly forgotten after the movie is out of theaters. Even hardcore fans of a given anime might not bother to remember their names because they aren’t canon to the manga. This has changed over time with the introduction of canon and semi-canon villains, but even they aren’t guaranteed to stay in the fandom’s collective consciousness.
Source：https://www.cbr.com/why-no-one-forgets-dbz-movie-villains/
