What are some of the worst superhero movies ever made?

I see The New Mutants in theaters. I thought it was OK but boring. Definitely not the worst X-Men film.

It should have been released years ago instead of getting stuck in a delay bubble.

The 2015 Fantastic Four film was pretty terrible. It was very noticeable what parts of the film was reshot during post-production.

Even the director wrote a critical review about the film on Letterboxd
https://letterboxd.com/joshuatrank/film/fantastic-four/

You wrote the wrong title. It was FantFourstic.

Choke me in the shallow water before I get too deep. (is this an Edie Brickell quote). I never realized the first word was choke!!! Learn something new every day.

Black Star and the Golden Bat (1979) AKA South Korean Batman