These are the biggest movie flops of 2019... so far. 2019 saw Avengers: Endgame replace Avatar as the biggest film in box office history. Sadly not every film can be a success. From critically-adored movies that stalled, like The Kid Who Would Be King and Missing Link, to all-out failures like Replicas, Hellboy, and Serenity, these movies proved that not even Keanu Reeves is safe from a box office bomb. Were there any box office flops that you loved this year? Let us know in the comments!Check out WatchMojo's 2019 so far roundup here:Top 10 Best Movies of 2019 (So Far):