
Obviously this doesn't apply to every villain (Bio-Broly), but a lot of the movie villains are popular with the fanbase. Turles, Cooler, Broly, Janemba, so much so they are mainstays in the video games and even used heavily in advertising such as the Tenkaichi 3 opening placing Broly and Janemba alongside Buu.
Broly was even so popular he was officially made canon.
I don't think I've ever seen this anywhere else. Like Naruto has 9 movies and the only villains of note are the last 2 films, the Last and Boruto the only 2 canon movies.
What's your take on this? Why do you think DB movie villains tend to be pretty popular or well liked?