Trivia: It might seem bizarre to make a movie about a 90-year-old drug mule (transporter), but "The Mule" is actually based on the true story of Leo Sharp who became known as the oldest drug mule in the U.S. Whereas Leo Sharp was a World War II veteran, Earl Stone in the movie was a Korean War veteran - and Clint Eastwood ("Earl") really did serve during the Korean War.
Trivia: The protagonist browses the archives of local newspapers to research more into the fire of May 3rd 2003. The news at the very top right of the front page, by the title "Town treasurer celebrates his re-election after disputed elections" features a mugshot of the director of the movie, Paul Feig. (01:20:25)
Trivia: Will Friedle of Boy Meets World fame wrote a script similar to this film and sold it to Disney around 1997. They opted not to make the film. By the time this film was made, there were so many story revisions that Friedle could not get a story credit. A representative from the Writer's Guild of America even tried to intervene on his behalf, but Disney's rep claimed his script was completely different.
Trivia: There's a running gag about Burt wearing a new hat, and how it throws everyone off. And it's true - this is the first film in the series where he isn't seen wearing an Atlanta Hawks hat at some point. (Instead he wears a Chicago Cubs hat). According to the documentary on the Blu-ray of the original Tremors, Burt wore an Atlanta Hawks hat in the first movie because the production had been given a large stock of them, and thus a Hawks hat became a staple of Burt's costume throughout the franchise. Michael Gross himself, however, is from Chicago, and in 2016, between the production of the 5th and 6th movies, the Cubs won the World Series (as mentioned in this film). Thus, Gross, a producer on the films, switched to the hat of his favorite team to honor the championship.
Trivia: The design of "The Auditor" is actually based on unused concept art for Pinhead for a "Hellraiser" reboot that was never produced. They simply removed the pins and added sunglasses to the character.
Trivia: At the very end Paul points at a guy on the street with his finger as a gun just like Charles Bronson did in the 1974 version.
Trivia: The setting is a little different (9-year-old Izzy is left alone at school), but "Home Alone" fans should recognize some parallel scenes. For example, the parents say, "We did it again" (forget to pick up Izzy after school) and run frantically through the halls; severe winter weather interferes with reaching Izzy; Izzy raids the refrigerator and pigs out on junk food; Izzy considers riding a skateboard down the steps, etc. Of course, there are stupid thieves who break into the school.
Trivia: The character of Kagan, the shaved head guy with the beard, is played by Jean-Claude Van Damme's son, Kris Van Damme.
Trivia: The scene that takes place in the back yard is actually the same location that was used in the 2016 movie Fences. In fact, the fence in the scene is the same one that was built by Denzel Washington in that film. (00:17:10 - 00:21:40)
Trivia: Although the post script states Dora Block was killed in the raid, she had been taken to hospital a few days earlier and wasn't present. She was murdered by the Ugandan Secret Police in reprisal a few days after the raid.
Trivia: Even though Morgan Freeman is top billed, he has only six minutes of screen time.
Trivia: An original plot had Laura attacking college freshmen during a game night for their part in her online humiliation and death.
Trivia: Stan tells Ollie he's never getting married again, he will just find a woman he doesn't like and buy her a house. Stan would marry three more times and divorce twice between 1937 and1953, including remarrying and re divorcing one of his ex wives.
Trivia: Following the success of this film, Netflix had to release a statement begging views to not try the "Bird Box Challenge" that was sweeping social media and putting many people in hospital. A news article on the incident can be viewed here https://www.theguardian.com/film/2019/jan/03/netflix-bird-box-challenge-meme-sandra-bullock-blindfold.