Random Trivia For This Title:
- Evelyn Deavor's name is a pun on "evil endeavor", foreshadowing her villainous side.
- Voyd's appearance and mannerisms so resemble those of Kristen StewartKristen Stewart, it is rumored that the character is based on her.
- Making Reflux appealing was a huge challenge until artists turned to frogs for inspiration. According to Art Director [?] Matt Notle, the idea of a frog made the character appealing and funny, even though his super power seems repulsive at first.
- The motel room the Parrs stay in early in the movie is number 208, the same number as the motel room the Freeling family (also with Craig T. NelsonCraig T. Nelson) flees to at the end of Poltergeist (1982)
- Sarah VowellSarah Vowell, who voiced the daughter Violet, is now older than Holly HunterHolly Hunter was in The Incredibles (2004). Vowell was thirty-four at the time The Incredibles was released, while Hunter was forty-six. At the time this movie was released, Vowell was forty-eight and Hunter was sixty.
- Pixar's Bud LuckeyBud Luckey did not get to record any lines for Rick Dicker before passing away four months prior to the film's release, and he had been replaced by Jonathan BanksJonathan Banks (he was announced to be taking over the role a month before Luckey's death). This made Rick Dicker the second Pixar character to be voiced by both an actor and a studio member at Pixar. The first had been Chick Hicks, who was voiced by actor Michael KeatonMichael Keaton in Cars (2006) and Pixar's Bob PetersonBob Peterson in Cars 3 (2017).
- Dash is seen eating Sugar Bombs, the chocolate frosted version of which is the favorite cereal of another hyperactive blonde, Calvin of "Calvin and Hobbes" fame.
- In one scene, while Bob Parr (Mr. Incredible) is trying to help Dash with his homework, he can be seen wrangling with "New Math", describing it as making no sense at all, and exclaiming "This is Math! Why would they change Math?" New Math was a brief, dramatic change in the way mathematics was taught in American grade schools during the 1960s (the approximate time frame of the Incredibles universe) which was highly criticized and quickly fell out of favor. The relevance of this joke evolves from the frustration modern parents (and students) occasionally experience with "Common Core" mathematics.
- HIDDEN MICKEY: The spirals on Screenslaver's hypnosis machine form a slightly lopsided, but still recognizable Mickey Mouse.
- As in The Incredibles (2004), Frozone's wife Honey does not appear on-screen. She is only heard yelling at her husband from off camera as he runs off to don his super suit and help the Parr Family, again just like last time. According to Writer and Director Brad BirdBrad Bird, Honey was initially going to appear on-screen, and she even got her own character design, but ultimately they decided it would be funnier if she remained off-screen. The character design for Honey would still be used for a background character.
- For this movie, Huck MilnerHuck Milner took over voicing Dash, as the character's original voice actor Spencer FoxSpencer Fox's voice had deepened since The Incredibles (2004).
- Writer and Director Brad BirdBrad Bird had stated over the years that he would only do a sequel to The Incredibles (2004) if he could come up with a story that was just as good as, or better than, its predecessor. The idea of Bob (Mr. Incredible) becoming a stay-at-home dad, while Helen (Elastigirl) becomes the breadwinner was there from the beginning, but it took several years for Bird to come up with the perfect story around which to write this idea.
- At one hour and fifty-eight minutes, this is not only the longest Pixar movie to date, but also the longest computer-animated movie to date, breaking the record set by Cars (2006) as longest Pixar film, which was one hour and fifty-seven minutes.
- Craig T. NelsonCraig T. Nelson played a father in this movie and Poltergeist (1982) who loses a child in another dimension inside of his house.