Even the superhero movies of the MCU, the DCU, and beyond sometimes fail at the box office, and it isn’t always particularly surprising. The superhero genre has consistently proven itself one of the most profitable in the film industry, particularly with the movies of the MCU repeatedly breaking box office records since the franchise’s inception. However, there have also been times that movies adapted from the stories of comic book heroes haven’t fared quite so well in a financial sense.

https://screenrant.com/superhero-movie-box-office-flops-predicted-list/