Trivia: When Charlie throws out a Viking in the air, the Viking lets out a Wilhelm scream.
Trivia: In the opening scene, Mr. Newman told Max, "Please be nice to your sister. Help your mom, and do not touch the drone." During this 90-minute movie, Max's mom Amy says three words ("Winter is coming") and is on-screen less than 10 seconds. Max's sister (not named) does not appear at all. (00:02:03 - 01:02:28)
Trivia: When Kim throws a henchman over the railings onto Professor Dementor, the henchman lets out a Wilhelm scream.
Trivia: This film shares a lot of similarities with the 2007 film Superbad. In fact, Beanie Feldstein, who plays Molly, is the sister of Jonah Hill, who plays Seth in Superbad.
Trivia: The film features a cameo from Frank the pug, who appeared in the first two films, but was absent from "Men in Black 3." Oddly enough, despite only appearing in the film for a few seconds, Frank appears quite prominently on several posters and even on the DVD cover art for the film. (The same is true for the "worm guys," who also appear on posters and the DVD cover despite only having a brief cameo in the film).
Trivia: The cuckoo bird was used at the beginning of the movie to point out what a parasitic bird does - secretly lays eggs in the nest of another bird species and leaves them for the different species to raise as their own. Another "brood parasite" that many people might be more familiar with is the Brown-headed cowbird. If all goes as intended, the different species, such as a Cardinal, will take care of the eggs until they hatch and continue feeding fledgings. Sometimes, "alien" eggs are evicted.
Trivia: After the police arrived, Hayley told Sarah, "It is not my fault my parents put a LoJack in my car." LoJack is a high-tech GPS system and theft recovery device that can pinpoint a car's exact location. LoJack ended sales in the U.S. in 2021 (will not accept any new orders but will continue to service existing connected vehicles). (00:41:50)
Trivia: The first "Critters" film to be rated R, as well as the first film in the series to not feature actors Don Keith Opper and Terrance Mann.
Trivia: Stay for hilarious outtakes after the credits with Eryka Badhu giving psychic feedback.