Bill Skarsgård (Pennywise) has stated that he had more fun on set during this movie because he was actually able to talk to and hang out with his adult co-stars. Skarsgård had minimal contact with his child co-stars in Chapter One so that they would be more genuinely scared of Pennywise once they saw him.
Bill Hader was unaware that Bill Skarsgård can actually move his eyes in two different directions. Hader asked Skarsgård what kind of editing was done to achieve the effect in the first movie. Skarsgård, in full costume and makeup, responded by saying "Oh, you mean this?" and doing it, causing Hader to freak out.
The young actors who were the Losers Club in chapter one grew tremendously in the 2 years following filming. They had to be digitally 'de-aged' in some scenes as they looked significantly older than before.
Bill Hader was approached for the role of Richie Tozier based on Finn Wolfhard's wish to cast him in the sequel. Hader, who had never met Wolfhard, was extremely flattered that Wolfhard wanted him to take on the role.
Bill Skarsgård stated in an interview that even after filming had wrapped, he would have nightmares of Pennywise. In these nightmares he would have to battle Pennywise just as the characters in the film do.
A license plate on the wall above the owner of the antiques shop is "CQB 241" the same as the license plate in Christine (1983). The owner also asks for $300 for the bike, the same amount that George LeBay initially offers to sell the car for.
One of Richie Tozier's character traits is his ability to do "voices" and impressions. Bill Hader is a well-known impressionist, famous for the celebrity impressions he did for years on "Saturday Night Live." With this in mind, screenwriter Gary Dauberman wrote a scene in which Richie does an impression of Al Pacino, a voice that Hader is quite good at. However, Hader requested that the impression be removed from the script because the Pacino impression was old material and he didn't feel like doing it again.
The role of Richie Tozier was written with Bill Hader in mind, but it still allowed freedom for another actor to potentially take on the role. Once Hader officially joined the cast, the script was edited to tailor the role specifically for his talents.
Xavier Dolan met director Andy Muschietti randomly and expressed interest about being in this film, having loved the first one. Dolan said "I'll do anything you want, be the door handle, the door knob, the curtain, whatever I can do in this film". He was later cast as Adrian Mellon.
At 2 hours and 49 minutes, IT: Chapter Two is 34 minutes longer than IT (2017), which ran for 2 hours and 15 minutes. In total, both films have a combined running time of 5 hours and 4 minutes, which is over two hours longer than the original 1990 miniseries adaptation of Stephen King's novel.
In an interview to promote Molly's Game, Jessica Chastain expressed an interest in playing Beverly. During the filming of Chapter One, she emerged as the fan favorite to play the older Bev with director Andy Muschietti, producer Barbara Muschietti and actress Sophia Lillis all going on record to say she would be their first choice too.
On the side of Mike's Native American artifact is a symbol of a circle with one large point and several smaller points. This represents the Dark Tower. Stephen King's Dark Tower series of novels connects a number of his works including It, The Shining, The Stand, Salem's Lot, Insomnia, and numerous others. The sixth book, Song of Susannah, implies that It is one of the six greater demon elementals. It's rival, the turtle Maturin, is one of the guardians of the tower's beams while It's mission is to destroy the beam.
In the novel, Eddie ponders that he may have married Myra because she reminded him of his mother. In this film adaptation, the same actress, Molly Atkinson, portrays both Myra Kaspbrak (Eddie's wife) as well as Sonia Kaspbrak (Eddie's mother).
Fans of the miniseries suggested the actors to make cameos into the movie, with the exceptions of Jonathan Brandis (Young Bill), John Ritter (Ben Hanscom), and Harry Anderson (Richie Tozier), as they've passed away.
Continuing with the extreme coincidence of the number 27, this film was on September 6, 2019 (9+6+2+0+1+9 = 27). The 1st chapter It (2017) was released on September 8, 2017 (9+8+2+0+1+7 = 27). There's a 27 year age gap between Isaiah Mustafa (Mike Hanlon) and Chosen Jacobs (young Mike) as well as Teach Grant (Henry Bowers) and Nicholas Hamilton (young Henry).
Jess Weixler (Audra, Bill's wife) was pregnant during filming. Although Audra makes only a brief appearance in this movie, she plays a much larger and more crucial role in both the novel and the miniseries It (1990).
During the scene where Beverly has to face her fears, the bathroom fills up with blood and one character says "Here's Johnny!", paying a homage to the film The Shining (1980), based on the book by Stephen King.
The orderly who takes adult Henry Bowers (Teach Grant) to his room says that they need to increase Henry's dose of clozapine. Clozapine is an antipsychotic drug meant for patients with the most severe forms of schizophrenia, who do not respond to any other medication, which indicates how psychotic and delusional everyone thinks Henry is.
This is the second Stephen King adaptation released in 2019, following Pet Sematary (2019). "It: Chapter One" was also the second-wide release Stephen King adaptation in 2017 following The Dark Tower (2017).
In the opening scene, the gay couple taunts one of the thugs by comparing his haircut to Meg Ryan's. Ryan makes a cameo of sorts later in the movie, on an old poster of You've Got Mail (1998) in the abandoned theater.
Of the cast, only one pair of actors who portray the same character share the same hometown. The actors who portray Stanley Uris, Wyatt Oleff and Andy Bean, were both born and raised in Chicago, Illinois.
The trivia items below may give away important plot points.
A recurring criticism about Stephen King's novels is his lack of inspiration for endings, even in otherwise well-acclaimed novels. This is repeatedly addressed in the movie, where Bill receives the same comments about his books (even from King in person).
Eddie's death in the book was a bit more gruesome than in the film. In the book, It bites Eddie's arm off and tosses him aside. Eddie then dies of shock from pain and blood loss. In the film, when the Losers are standing around the very weakened Pennywise, Richie approaches and rips one of It's arms off.
Towards the end, Pennywise takes the form of the deceased Stanley Uris's head. The head soon grows insect-like legs and begins to crawl after them. This is an obvious homage to John Carpenter's The Thing (1982), especially apparent in the way that the creature is back-lit by their flashlights; upon seeing the spider-head creature, Richie even makes the same exclamation as the Palmer character does in The Thing. Carpenter previously directed the Stephen King adaptation Christine (1983).
When Ritchie (Bill Hader) sees the Stanley-spider, he says, "You've got to be fucking kidding." In John Carpenter's The Thing (1982), a character says the exact same line reacting to a similar spider-head creature.
In the book and TV movie, the line, 'Beep, Beep Richie' was a way to tell Richie to stop talking. In the first chapter, this is only spoken by Pennywise, with no explanation. However due to fan outcry, it was added in a moment between Bev and Richie in chapter 2.
The ending of the movie differs than the book, in that Pennywise is revealed to be a female spider in its most true form to humans and the Loser Club must destroy all the eggs that were laid because they're about to hatch.
During the final battle Richie calls Pennywise a "sloppy bitch" this is a reference to an interview of Bill Hader on Conan where Hader revealed he would call his friend that when they would beat him at Goldeneye.
A deleted scene from It (2017) revealed that Henry Bowers had killed his two remaining friends just before confronting the Losers' Club in the Neibolt house at the end (probably at the suggestion of Pennywise), which explains why they were absent from the rest of the film. This scene was rumored to be in this film, but it is not.
Stan's Bar Mitzvah scene was originally filmed for It (2017), but only brief shots from it were used in the film (the full scene was made available on the BluRay edition). The sequel contains the full scene as a flashback, but apparently with different takes used.
During the finale, Richie (Bill Hader) throws a stone at Pennywise in his original spider-like form, with little effect. In the finale of the miniseries It (1990), Beverly incapacitates Spider-It with relative ease, by catapulting a stone into its chest.
Near the end of the film, Richie (Bill Hader) re-carves the letters "R + E" into the same old fence that Young Richie (Finn Wolfhard) carved it into in the middle of the film. The "R" stands for Richie, and the "E" stands for Eddie (James Ransone/Jack Dylan Grazer).
Despite an apparent death in the novel, Pennywise has been seen or mentioned in the novels of The Tommyknockers (1993) (Tommy sees a "clown with shiny silver dollar eyes" in the sewers and hallucinates red balloons), Dreamcatcher (2003) (a plaque dedicated to the victims of a flood that occurred during the final battle is vandalized with "PENNYWISE LIVES"), and 11.22.63 (2016) (after Jake meets Richie and Bev after the childhood battle Pennywise taunts him about the time-portal).
At one point Richie makes a joke about Eddie's height to which Eddie responds "I'm five nine.". Which is true, James Ransone is five nine. But James Ransone isn't the smallest male Loser, that would be James McAvoy who is five seven, making him the second smallest Loser. The first is Jessica Chastain rounding out the group at five four.
The Smokehole scene, which is in the book, was originally planned for the predecessor It (2017), but ultimately removed from the script as it was deemed too expensive. It was finally used in this sequel (albeit as a flashback).
The shop owner played by Stephen King is seen drinking mate (a typical Argentine infusion) from a cup that appears on the foreground in a couple of takes, which is decorated with the CAI (Club Atletico Independiente) football team colors and logo. Director Andy Muschietti is from Argentina, and a CAI supporter.
The smoke hole scene that Mike mentions happened in the book when the Losers' Club were kids. It was originally meant to appear in It (2017) but it had to be cut due to budget constraints. It was moved to the sequel instead, now occurring in the adult timeline (some time before the start of the film).
In the book, Bill's wife and Beverly's abusive husband back their own way to Derry, resulting in a more expansive story of IT taking advantage of the 3 of them, and having Bill's wife look into the Dead Lights. This is left out in the movie, probably due to the existing length of the movie.
During a flashback to the underground club house, young Stanley offers young Richie a shower cap to keep spiders off his head, which Richie declines, claiming he is not afraid of spiders. Near the end of the movie, It takes the form of young Stanley's severed head, which sprouts spider legs and proceeds to drop down onto adult Richie's head.
Near the end of the film, James McAvoy has a conversation with his younger self (actually Pennywise taking that form). This is not the first time that McAvoy meets a version of himself from another time period: in X-Men: Days of Future Past (2014), he speaks with his older self.
A reference is made to the 1982 John Carpenter film The Thing when Stanley's head mutates into a crablike creature. Coincidentally Stanley's original adult actor from the 1990 miniseries Richard Masur made an appearance in Carpenters film and this may be a nod to the actor himself.
The climax of the book and movie are much different: in the book, Mike is severely wounded after his encounter with Henry Bowers and unable to join the remaining Losers in the sewers for the final battle against Pennywise. Stanley Uris also dies without leaving a suicide note or sending a letter to the rest of the group. Also, unlike in the movie, the Losers do begin to forget their memories again after parting ways