The Batman introduced Robert Pattinson's version of Bruce Wayne in a dark reimagining of Gotham City. While the film received a PG-13 rating in the US, in the UK it was awarded a 15 certificate. This is effectively a middle ground between the US PG-13 and R ratings, indicating a film is only appropriate for audiences aged 15 and older. The more mature certification, which is a rarity among superhero movies, was met with some controversy among Batman fans.
Source：https://www.cbr.com/the-batman-15-rating-uk-justifiable/
