When development for either a live-action film or TV series began when the first book came out in 1997, Dav Pilkey wanted Chris Farley to play Captain Underpants. However, Farley tragically passed away, and the project was shelved.
The last DreamWorks Animation film to be distributed by 20th Century-Fox before Universal Pictures took over.
In the first book one of the pranks that George and Harold pull is having the PA system in the school playing "Weird Al" for six hours. The film's theme song is sung by 'Weird Al' Yankovic.
The school around which the film's actions are centered is named "Jerome Horwitz Elementary." Jerome Horwitz is the birth name of Curly Howard of The Three Stooges fame.
This is the sixth Dreamworks movie to be adapted from a children's book, the first five being Shrek (2001), How to Train Your Dragon (2010), Rise of the Guardians (2012), Home (2015), and The Boss Baby (2017).
The first film adaptation of a Dav Pilkey book, though it is based on several of the "Captain Underpants" books.
The shot of the school children marching sadly into school in the rain is an homage to the shot in 'Joe Versus the Volcano (1984)_ of workers marching slowly in the rain into a factory; that scene in turn references a scene in the sci-fi classic Metropolis (1927), in which workers march like automatons into the factory.
The subtitle for the film says "The First Epic Movie," despite no sequel announced yet. This is because the books had the subtitles "The First, Second, Third, etc. epic novel."
Unlike all of the previous DWA films, which were animated in-house in Los Angeles, this is the first to be outsourced; it was done at a lower-budget company in Montreal, Canada.
This will be Nick Kroll's third animated movie since Sausage Party (2016) and Sing (2016).
This will be the second time Kevin Hart is a voice in an animated movie. His first time was in The Secret Life of Pets (2016).
When George and Harold find a drawer to the confiscated items dedicated to themselves, it is indeed an ode to Harry Potter novels in which Fred and George find a drawer dedicated to themselves in Filch's office.
During the puppet fantasy sequence where George and Harold bump into each other, store names at the mall include "24 Hour Bunion Removal" "Everything Except Fabric Softener", "Fake Plant Paradise", "Monocle Mania", "Edna's Brazziers" "Lots and Lots of Phones", and "Robot & Wizard Supply".
First, and official, trailer for the film released the day after the DVD release of Nick Kroll's previous animated film, Sing (2016), where he also spoke with a German accent.
Kevin Hart, Ed Helms, Nick Kroll and Kristen Schaal each did voice work at Illumination.
Jordan Peele's second animated film, after Storks (2016), another film where he voiced one of the villains.
Released five years after Ed Helms' first animated movie, The Lorax (2012), which was also based on a children's book.
Thomas Middleditch and Kristen Schaal have also done voice work on animated Disney shows.
The second collaboration of Ed Helms and Nick Kroll, the first being Vacation (2015), which featured Peele's on-and-off partner Keegan-Michael Key.
Dreamworks Animation's ninth film to take the name of the main protagonist(s), after Shrek (2001), Spirit: Stallion of the Cimarron (2002), Sinbad: Legend of the Seven Seas (2003), Megamind (2010), Puss in Boots (2011), Turbo (2013), Mr. Peabody & Sherman (2014), and The Boss Baby (2017).
Is the 3rd Dreamworks Animation film that's not a sequel to be subtitled, after Spirit: Stallion of the Cimarron (2002) and Sinbad: Legend of the Seven Seas (2003).