Many fans of comic book movies and, well, pop culture in general can often be found blasting people online for spoiling their favorite TV shows and movies right after they're released.
It's gotten so bad studios have asked viewers to be quiet so others can soak in the experience and be genuinely surprised.
Interestingly, Reeves had spoken in interviews before about a deleted scene that had Keoghan's character in Arkham with The Riddler.