'Joker: Folie à Deux,' directed by Todd Phillipps, now holds the worst CinemaScore rating for any comic book movie, a D. 'Madame Web' from earlier this year got a C+, and the previous lowest was 2015's 'Fantastic Four' with a C-.
https://people.com/joker-folie-a-deux-d-cinemascore-box-office-flop-872…