Audiences love superhero films. With dozens more planned over the next few years, audiences are hungrier than ever to see their favorite comic-book legends on the big screen.
But superhero movies aren't guaranteed hits. At their best, comic-book adaptations bring in an already dedicated fanbase and set up a cinematic universe with a lot of potential for spinoffs and sequels. At their worst, they're hugely expensive mistakes because of the high cost of shooting big-budget action sequences.
While "Batman v Superman" has grossed over $784 million worldwide, critics picked apart the film for being an overstuffed, convoluted piece from director Zack Snyder. Though fans were kinder to the Warner Bros. movie, "BvS" is not going down as anyone's favorite superhero movie ever, but it wasn't the worst, either.
Tech Insider looked at the Rotten Tomatoes scores for superhero movies of the past 20 years and averaged critic and audience scores for the film to come up with our list.
Keep reading to see the worst superhero movies.