How NOT To Make A Comic Book Movie (Why These 10 Failed)

10. Redoing The Ending In A Rush - Dark Phoenix (2019)

2019's Dark Phoenix was the biggest box office bomb of the year it was released, and it ended up being a terrible adaptation of Chris Claremont and John Byrne's greatest story written for the comics. "The Dark Phoenix Saga" was one of the most important X-Men stories ever told, so this adaptation had to be amazing.

Of course, it wasn't, and it ended up being so far from the source material; few people even bothered to watch it after the reviews came out. The film suffered from several problems, but the biggest one was the ending, which was changed shortly before it was released.

The ending of the movie originally had one that was similar to the ending of an MCU movie (Civil War, as opposed to the assumed Captain Marvel), so the studio opted to reshoot the whole thing, so as not to be compared to the popular Marvel Studios film. If the script had only deviated from the script up to the ending, it might have worked, but changing it like that ruined the movie.

On its own, it's not incredibly terrible, but a lot of the plot elements seemed forced and unnecessary. The death of Mystique was meant to be a pivotal turning point, but they let that out in the trailers and ruined the surprise. That alone was a major problem, as the marketing for the movie only managed to push potential viewers away.

The movie cost $200 million to produce, and while it technically made a profit with a $252.4 million global box office haul, the marketing costs made it a $133 million loss for the studio.